Electric Vehicle Batteries

Ramesh Natarajan
Lithium-Ion & Lead Acid

With the advent of Electric Vehicles – EV’s in industry parlance - batteries have become an important topic of discussion with a lot of money being spent in Research & Development of Advanced Cell Chemistries. The crucial role of batteries in an EV is well established and the survival of a safer environment seems to hinge on the success of EV’s and the end of use of Fossil Fuels.

Though various options to replace fossil fuels are being talked about, and different cell chemistries are being tried, the most popular and widely used alternative to Lead Acid seems to be Lithium-Ion. Hydrogen Fuel cells & Sodium-Ion are also touted as being very good alternatives, and trials using these technologies are also being conducted, with a possibility of commercialising these in the near future.

The good old, proven and rugged Lead Acid batteries are still in use, though the newer technology Lithium-Ion batteries have found their way into the EV market and seems to be dominating this market segment successfully.

A lot of other electric vehicles continue to use lead acid batteries.

In India E Rickshaws which are used as public transport vehicles use Lead Acid Batteries though a few of them also use Lithium-Ion batteries.

A majority of battery-operated material handling vehicles like forklifts, platform pallet trucks and BOPT’s use Lead Acid Traction Batteries.

Battery operated Trains & Buses used in malls, resorts and play areas to entertain children and give them joy rides also use Lead Acid Batteries. Boats and Bumper Cars used in various Game Arcades and Parks also use Lead Acid Batteries.

Golf Carts used in golf courses or star hotels & resorts as well as Passenger Transporting vehicles used in Airports or Zoos etc use Lead Acid Batteries.

After proving successful in the EV segment, the Lithium-Ion batteries are however entering these segments, mentioned above, which have been traditionally using only Lead Acid batteries.

Due to lower weight per Watt Hour, nowadays, Lithium-Ion batteries are being used extensively in Electric Cars, Buses and Two Wheelers. These batteries accept fast charging and accept opportunity charging also.

However electric cars running on Lithium-Ion batteries do use Lead Acid batteries also, additionally, for certain accessories & critical safety controls.

The lithium-ion batteries are better suited for electronic devices since they deliver more capacity wrt weight in comparison to a lead acid battery.

To make it simpler to understand - the lead acid battery shall need to be heavier than a lithium-ion battery for delivering the same amount of energy that a lighter lithium-ion battery shall deliver.

Lead acid batteries have the following disadvantages vis a vis batteries of advanced cell chemistries which are now available in the market.

- They are larger in size and heavy, when compared on a like to like basis, for a defined quantity of stored power
- They need periodic water topping up, to keep the battery in working condition, if the vented type flooded electrolyte batteries are being used
- They need to be maintained by periodic monitoring - both in the case of flooded electrolyte type as well as the so-called sealed maintenance free batteries
- They need a longer time to get recharged after a discharge
- They do not come with a battery management system
- They emit gases when on charge - beyond the gassing voltage

Hence lead acid batteries do not find favour for the following applications:

- Portable Tools
- Medical Equipment
- Digital Cameras
- Mobile Phones
- Toys
- Marine Applications

Lead acid batteries are nowadays getting replaced in the following applications though not completely as yet:

- Golf Carts
- Scrubbers
- Industrial Sweepers
- Material Handling Equipment
- Electric Vehicles

The batteries which are used in certain applications specified above, replacing lead acid batteries, are of the Lithium-Ion type.

A lithium-ion battery can accept a fast charge unlike a lead acid battery which cannot accept a quick recharge.

A lithium-ion battery needs no water topping up or routine maintenance of the type that a lead acid battery requires on a periodic basis. It therefore is much cleaner than a lead acid battery.

The light weight characteristics, faster recharge acceptance capability, maintenance free nature are therefore the reasons due to which Lithium-Ion batteries are preferred in comparison with Lead Acid batteries.

Lithium-Ion batteries are therefore successfully used in medical equipment, power tools, cameras, toys, golf carts, scrubbers and mobile phones as a compact, lightweight and trouble-free substitute to lead acid batteries.

Efforts are underway to introduce Lithium-Ion batteries in the energy storage segment too. There are a lot of users of Home Inverters in India and the power shortages in Africa has spawned a growth of this segment. Renewable Energy needs, mainly Solar Photovoltaic systems being installed to meet the growing energy requirements has increased the demand for batteries in this area also.

The lithium-ion batteries have many drawbacks though, especially when compared with the robust, safe and proven technological storehouse of power - lead acid batteries.

Am listing the drawbacks below:

1. Lithium-ion batteries can be used only when it is coupled to a battery management system.
2. The battery management system has to be extremely good and robust enough to control the battery and must give alerts in time to prevent unsafe operation of the battery.
3. Lithium-ion batteries are prone to thermal runaway which can cause an explosion or catching fire of the battery. Frequent occurrences of fire are reported especially with the rising use of these batteries in electric two-wheelers.
4. In case of a fire due to thermal runaway the Lithium-Ion batteries can explode. Though water can be used to restrict the rise in temperature, it is not recommended. Water ingress actually shorts the cells and can become the cause of fire. Water reacts with Lithium. Hence in case of a fire in an electric vehicle that uses a Lithium-Ion battery, it is not recommended to use water to douse the fire. Sand may be used to restrict the spread of fire and contain the fire. The fire extinguisher developed to put OFF Lithium-Ion fires is a special type known as AVD type (Aqueous Vermiculite Dispersant). The fumes which are released due to the fire are harmful enough to cause blindness and can lead to respiratory distress by harming the lungs.
5. Lithium-ion batteries use Cobalt which is mined unethically in Congo using child labour in unhygienic and hazardous conditions.
6. Lithium ore deposits are available in restricted quantities in Argentina, Bolivia and Chile with some quantity in China, USA and Australia. Hence it is an item to be imported and used by other nations. This increases the dependency on a few countries which is not good.
7. The countries wherein Lithium is available levies a lot of tax on exports of this material due to which battery costs have risen substantially in the recent past.
8. Lithium-ion batteries are non-recyclable. Though some claims of recyclability are made these are not efficient enough to warrant attention. Moreover, such facilities do not seem economical to run and there are not many.
9. Lithium-ion batteries do not have a scrap rebate policy since the manufacturers of these batteries do not have a well-established procedure to deal with or recycle the waste.
10. Lithium-ion batteries are expensive and the costs are expected to only go up further.
11. Lithium-ion battery manufacture from A to Z requires huge investment in plant and machinery. assemblers need to depend on cell suppliers and hence the business is not stable with the Chinese manufacturers dictating the prices and changing it frequently.

Lead acid batteries are a well-established proven technology, safe to use, recyclable, economical in terms of cost and fetch a scrap value at the end of life.

Lead acid batteries are inexpensive compared to various other secondary storage batteries due to the following reasons:

1. The raw materials required are easily available.
2. The batteries contain lead as a major raw material and this is recyclable.
3. The technology is proven and easily available to many.
4. The batteries can be made in the small and medium industries with little investment.
5. The machinery required for manufacture and assembly is easily available and not costly.
6. Certain operations in the battery manufacturing process can be done manually or using semi-automatic machines also.
7. There are many established vendors of raw materials and components to make the batteries and materials are therefore available, at competitive prices, to the battery manufacturer.
8. The major raw materials being recyclable and additional materials required being locally available the cost of import and import duty does not arise.
9. The batteries are easily serviceable and repairable too. Trained personnel for repairs and service are available all over the globe. 

Lead acid battery as a storage device has been found to be economical, robust, long lasting, recyclable, reliable, safe, repairable, economical, widely available, environment friendly in use, efficient and proven product technologically. 

It is used successfully in a wide range of applications over the past many years ever since it was initially fitted in automobiles about 160 years back.

The lead acid battery has undergone various changes to make it lighter in weight and maintenance free.

The various competing technologies have succeeded in some of the applications but not in a safe or reliable manner. Moreover, the cost of these products being high in comparison to lead acid batteries, the alternative cell chemistries, though advanced, have not been able to replace lead acid batteries totally.

With the new generation becoming environment conscious and talking of a circular economy which talks of produce, use, repair, recycle and reuse it remains to be seen as to which technology survives. 

To conclude – The battery market is an ‘AND’ market for sure and not a ‘OR’ market. 
The lead acid batteries seem to be poised to exist for a very long time, along with other kinds of batteries which are being newly introduced in the market.

To get in touch with me or hear podcasts on batteries please click on the link below:
https://linktr.ee/rameshnatarajan

#ElectricVehicles #EV #Batteries #RameshNatarajan #LithiumIonBatteries 
#ArticlesOnEV
By Ramesh Natarajan September 23, 2025
Battery manufacturing is often seen as a purely technical process — involving chemical reactions, grid casting, pasting, curing, assembly, and charging. But in reality, it is equally a business of human decisions, operational discipline, and financial strategy . In this article, adapted from my recent podcast episode, I share 11 practical guidelines for battery manufacturers . These are not just best practices — they are survival strategies for anyone working in the battery industry or planning to enter it. 1. Master Battery Chemistry Every successful battery begins with the right chemistry. A deep understanding of electrode behaviour, electrolyte reactions, and specific gravity changes is essential — not only for R&D but also for production and troubleshooting. Chemistry is the foundation of battery performance and innovation . 2. Standardize and Follow Processes Production parameters are not just rules — they are safeguards for consistency. Deviating from established procedures on the shop floor often leads to quality problems. Continuous improvement is welcome, but it must be tested and validated. 3. Think Like a Systems Engineer Battery production is a chain of connected processes. A grid casting machine has little value if the pasting or curing stations are under-resourced. Balancing upstream and downstream operations prevents bottlenecks, idle inventory, and delivery delays. 4. Treat Inventory as Cash In the lead acid battery industry , inventory ties up huge amounts of working capital. Excess stocks of lead, lead oxide, or separators are frozen money. Managing inventory efficiently is critical for controlling costs and ensuring smooth cash flow. 5. Never Compromise on Quality Cutting corners may reduce immediate costs but damages long-term credibility. Warranty claims and customer dissatisfaction are far more expensive than maintaining strict quality control. In today’s competitive market, quality is your strongest differentiator . 6. Build a Culture of Training People forget procedures or develop shortcuts that affect quality. Ongoing training, retraining, and skill development ensure that your workforce follows best practices consistently. A culture of continuous learning is a competitive advantage. 7. Minimize Waste and Scrap Lead is one of the most expensive raw materials in the battery industry. Scrap, rework, and pilferage eat directly into margins. By identifying and reducing non-value-adding activities, manufacturers can significantly improve profitability. 8. Maintain a Long-Term Perspective The battery business is not a quick-profit venture. Success requires resilience, patience, and the ability to zoom out from day-to-day operations to focus on long-term strategy, customer relationships, and market positioning. 9. Differentiate Between Cash Flow and Profit High sales volumes don’t always equal profitability. With raw material costs, especially lead prices, changing frequently, manufacturers must adopt dynamic costing systems. Otherwise, you risk selling at a loss without realizing it. 10. Build Strong Relationships Technology alone doesn’t sustain a battery company. Strong partnerships with employees, vendors, and customers are equally important. Trust and fairness create loyalty, which helps businesses withstand market fluctuations. 11. Know When to Exit Battery manufacturing demands high energy, commitment, and responsibility. If passion fades or returns no longer justify the effort, it’s wise to plan an exit. Staying beyond that point often drains resources and enthusiasm.  Final Thoughts Battery manufacturing is not just about machines and materials — it is about people, processes, and principles . These 11 guidelines provide actionable insights that textbooks rarely cover but real-world experience proves vital. 📌 Grab your FREE Battery Manufacturing Process Flow Chart here: 👉 Download Here 🌐 Read more blogs, listen to podcasts, and watch videos on battery manufacturing: 👉 www.rameshnatarajan.in 📩 Share your thoughts or queries with me directly at: 👉 rameshnkailad@gmail.com 📚 Get my books on batteries and industry practices: 👉 Buy Book 1 👉 Buy Book 2 — By Ramesh Natarajan, Author of the Amazon Bestseller “Batteries Demystified” , Podcaster & Blogger
By Ramesh Natarajan August 12, 2025
In recent years, lithium-ion batteries have become the poster child for innovation in the energy storage industry. From powering our smartphones to enabling electric vehicles, their rapid adoption has made many believe they will soon replace lead-acid batteries entirely. But is that really the case? While lithium-ion technology offers undeniable advantages in certain applications, the idea that it will completely replace lead-acid batteries is, in my view, unrealistic and impractical. Let’s explore why. Where Lithium-Ion Batteries Shine Lithium-ion batteries have proven their worth in areas where lightweight design, compact size, and fast charging are critical. Consumer Electronics: Smartphones, laptops, drones, and cameras. Electric Vehicles (EVs): Reduced weight equals better range and performance. Portable Tools & Medical Devices: High energy density makes them ideal. In these areas, lithium-ion’s quick charging capability and low maintenance requirements (no frequent water topping-up) are strong selling points. Why Lead-Acid Still Holds Strong In sectors like UPS systems, renewable energy storage, and material handling equipment (MHE) , factors such as safety, cost, and reliability outweigh the benefits of lightweight design and fast charging. Lead-acid batteries have been refined over decades to handle demanding conditions with predictable performance. Automatic water top-up systems have solved one of their biggest past drawbacks — manual maintenance. Many high-quality lead-acid batteries now achieve 1,200–1,500 cycles in MHE applications, meeting global IEC standards. The Reality of Lithium-Ion Limitations While lithium-ion manufacturers often claim 1,500–4,000 cycles , this comes with conditions — perfect battery management systems (BMS), controlled temperature, and optimal charging patterns. In real-world heavy-duty use (e.g., forklifts), users report: Capacity loss due to cell imbalance . Costly maintenance and cell replacement . Downtime during servicing. In contrast, lead-acid batteries are simpler to maintain and globally recyclable . Recycling networks for lithium-ion batteries are still developing, raising environmental concerns. Cost, Safety & Total Cost of Ownership (TCO) When it comes to energy storage systems , especially in industrial and large-scale applications: Lead-acid wins on cost and TCO. Lithium-ion may offer compactness , but with higher upfront and maintenance costs. Lead-acid batteries are inherently safer with fewer thermal runaway risks. Environmental Impact & Recycling Lead-acid batteries have a well-established recycling process — often with buyback or scrap rebates. Lithium-ion recycling is still in its infancy, and without robust infrastructure, discarded cells can become an environmental hazard. The Final Verdict Lithium-ion batteries are here to stay, but they won’t replace lead-acid batteries anytime soon. Each technology serves distinct needs: Lithium-ion: Best for weight-sensitive, compact, and portable applications. Lead-acid: Best for cost-sensitive, safety-critical, and high-reliability industrial applications. Unless a safer, more cost-effective, recyclable alternative emerges, lead-acid batteries will continue to be a dominant player in the energy storage industry for years to come.
By Ramesh Natarajan August 6, 2025
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By Ramesh Natarajan December 14, 2023
Battery claims are due to damage, improper maintenance, abuse, incorrect handling, and misuse. The possible reasons for the explosion of a lead acid battery can be either one or a combination of the following: ✅ The battery can explode if it is subject to an overcharge i.e., charged continuously though it is fully charged. When a battery is fully charged it means the active material has converted to sponge lead on the negative plates & lead dioxide on the positive plates. In such a condition, no lead sulfate active material is available to be converted chemically on both positive & negative plates. The electrical energy fed by the charger which is supposed to be converted to chemical energy is converted to heat energy. The electrolyte is heated & the evolving explosive hydrogen gas generated builds up pressure under the vent plugs causing the vent plugs to pop up or builds up pressure sufficient enough to explode the battery. ✅ The battery can explode if an improper charger is used to charge the battery. When a battery is connected to a charger meant for charging a larger capacity, the charger starts charging the battery at a higher-than-recommended current. In such cases, the battery life is affected and the active material from the plates starts shedding creating an internal short. The internal short causes heat and explosion. In this case, the internal short is not because of a manufacturing defect but due to incorrect charger selection. ✅ The battery can explode if sources of static electricity cause a spark in the vicinity of the batteries. Also, naked flames or welding sparks, or any other sparks near batteries while batteries are on charge can cause a fire or explosion. As and when batteries are on charge hydrogen gases are evolved. Hydrogen gas is very flammable and yields explosive mixtures with air and oxygen. Since hydrogen gas is flammable the source of spark with oxygen from the atmosphere can lead to a fire and explosion of the battery. Hence even smoking cigarettes is not recommended in rooms where batteries are on charge. ✅ The battery can explode if the batteries are on charge in a room with improper ventilation. When batteries are on charge hydrogen & oxygen are both evolved as gases. They do recombine to form water but not fully. If the hydrogen gas is evolved to such an extent that the concentration of hydrogen gas is greater than 4% it can cause an explosion of the battery. Hence batteries must be charged in an atmosphere where the gases can escape. The battery manufacturers usually recommend battery charging areas or rooms have adequate ventilation with at least six air changes per hour. ✅ The battery can explode if batteries of smaller than recommended size or lower Ah capacity are used. At times — due to the non-availability of correct capacity batteries or cost considerations — batteries of lower capacity are fitted to equipment or vehicles. In such cases the charger being of a much larger capacity than required by the battery –tends to overcharge the battery, heating the battery, causing bubbling & gassing with a possible explosion of the battery due to pressure build-up within the battery container. ✅ The battery can explode if battery terminals are shorted externally with any metal object or conducting substance. ✅ The battery can explode if the battery has an internal shorting due to a manufacturing defect. ✅ The battery can explode if the vent holes of vent plugs are clogged due to the battery being kept or used in a dusty/dirty environment. The batteries having such clogged vent holes of vent plugs shall not allow gases to escape due to which there shall be pressure build-up leading to an explosion. Please share my answer if you found it to be useful. Do follow me for more such articles. You can visit my website to 👀read similar blogs and articles, 👂hear my podcasts, and 🎥see videos about batteries and related subjects by clicking the link below: ✔️ www.rameshnatarajan.in TO GRAB YOUR FREE COLOR COPY OF THE BATTERY MANUFACTURING PROCESS FLOW CHART, CLICK ON THE LINK BELOW: ✔️ https://ramesh-natarajan.ck.page/1d1909eaef To✍️write to me with your comments and suggestions please do note my E-Mail given below: ✔️ rameshnkailad@gmail.com To buy my books 📒, please click on one of the links below: ✔️ https://relinks.me/9390661692 ️or https://relinks.me/B0BNXL1854
By Ramesh Natarajan October 2, 2023
➡️Are you a battery manufacturer selling batteries in the retail market? ➡️Are you a dealer of batteries? ➡️Are you finding the market conditions unfavorable? ➡️ Are you struggling to manage offered warranties & replacement? ➡️Are you frustrated with the business setup? ➡️Are you finding the competition tough? ➡️Are you facing unfair demands from the battery user? ➡️Are you finding difficulty in maintaining committed Price Line, even for short buying cycles ? 👉 If yes, then you must consider 👀 reading this article. Are you finding it difficult to sell batteries in the retail market? IF YES, DO READ THIS TO PAUSE & INTROSPECT. Then sit back and think. 1. What does your customer want? 2. He wants batteries or the output from batteries? We need to understand that batteries store energy, and the user of batteries is only interested in this stored power. Let us understand what the customer does not like about buying batteries. 1. All batteries, even unbranded ones, are expensive. 2. Batteries need maintenance. AMC is cumbersome and an additional task in addition to cost. 3. Battery buying is an activity that is best avoided and is boring. 4. The offers of different battery manufacturers are confusing. 5. Dealers selling unbranded batteries keep shifting loyalties. 6. Branded batteries are costlier than unbranded batteries. Next, understand the customer of today. 1. He or she is looking for reliable and trouble-free service. 2. He/she is ready to pay—an EMI and not a lump sum. 3. He or she does not want to be committed in many matters. Batteries are not considered an asset anymore but a necessary evil. 4. His or her job entails shifting for work from cities and even countries at times. Observe the trend. 1. Ola and Uber are convenient and hence have succeeded as concepts. 2. I Phones and other costly smartphones sell more easily on EMI than against full payment. 3. Netflix and Amazon Prime OTT platforms are examples of subscription-based services that are popular. What needs to be done? Battery manufacturers need to come together and have an app developed that can onboard battery dealers. Probably inverter and solar system integrators, who sell batteries too, can be part of this network. An app developer can make this app independently if the battery manufacturers do not want to invest in software development and maintenance of the app. App development is not the forte of battery manufacturers anyway. The marketing of this app, which is like a Zomato or Swiggy app, is then the job of the app developer. Customers or users of batteries need to be registered on this app for the service they need. The battery sellers can then make suitable offers to the prospective battery user. The battery dealers can, in fact, onboard prospective battery customers onto this app. Once the credit card is swiped, payment shall be done monthly until the service is availed. Basically, the entire system should work like an electricity utility company. Or like a newspaper or magazine subscription. The app developer benefits from the subscription fee from the battery seller, and the battery seller benefits from the battery users’ monthly payments. The app can communicate with the BMS and give periodic alerts. A GPS can be incorporated as part of the system to provide alerts in case of a battery and inverter. The app can be made with all the inputs needed. The onboarding of users should happen with 1. One-time immediate payment for installation and commissioning in the case of automotive batteries or necessary wiring in the case of inverter/solar batteries. 2. A security deposit of the battery or battery and inverter can be collected as a reserve future payment by credit card and not as a lump sum payment. 3. Monthly payment of the EMI setting may be done. All these can happen with credit card details. 4. On receipt of the monthly payment, the security deposit must be reduced accordingly. 5. The OTP method commonly used nowadays can be used for the start and discontinuation of service. 6. Discontinuation of service terms can be equated to the cost of the system and the expected life of the battery. 7. The cost of the scrap battery, which is in good working condition, needs to be factored into the system properly—as a lump sum rebate for the next cycle or as a free service for extra months in this or the next cycle. 8. Terms for discontinuation of service in between can be decided and incorporated into the app. Users can use this working system and the app for 1. automotive batteries, 2. inverter batteries, 3. inverters and batteries, 4. UPS systems, 5. solar batteries, 6. lift batteries in residential complexes, 7. golf cart batteries, 8. scrubbers, 9. battery rental services, 10. forklifts and other MHEs like pallet trucks or scissor lifts. In fact, the biggest buyers of motive power batteries as well as material handling equipment are rental companies that provide service to large industries and warehouses. The users of this service do not employ drivers for three shifts. This is the responsibility of the service provider. In fact, they do not have to worry about maintenance. They only provide space for charging the batteries and the required electric points for the charger. Even the charger and charger maintenance are in the purview of the service provider. This model of the MHE segment is probably what inverter, solar, and other segment battery manufacturers have to follow and implement. How do inverter battery manufacturers benefit? Presently the competition in the market and price war amongst competitors is leading to the closure of many manufacturing companies. The quality of batteries is the first casualty. Once this system of providing stored energy starts, every manufacturer benefits. The ones using required quantity of lead and good technology to make batteries shall earn monthly EMI payments for a longer duration from the same battery. Others compromising on raw materials quantity and quality shall have batteries working for fewer months. As far as the user is concerned the per month cost shall be uniform. This shall be a Win-Win situation for both the battery manufacturer and the battery user. The competition amongst battery manufacturers shall now be a healthy competition to make longer-lasting batteries. With the cutthroat competition consigned to the dustbin, the industry shall surely survive according to me. Does the above formula apply to all battery manufacturers? No. Manufacturers exporting batteries, selling to government agencies or supplying in bulk have no issues and are not part of the retail market. They need to compete at a different level and are in a different market altogether. Hence these battery manufacturers can continue with direct sale of batteries. The other manufacturers catering to retail may have to rethink their strategy and adopt this or some other better idea. What could be a better idea? A better idea may be having an entire residential society have renewable energy or power from a UPS with metered power in each apartment. This is similar to the piped gas system. A still better idea may be a smart hybrid system for residential complexes. Utility power has to be used only when renewable energy is not available. The utility can be on standby to top up the power requirement based on load. This facility, however, will need to be implemented at the time of the construction of the apartments. As with any new scheme or proposal, this is an idea that needs to be worked upon and honed to perfection. Efforts from all stakeholders will surely benefit the battery manufacturers, who are struggling to sell batteries in the retail market. You can visit my website to 👀read similar blogs and articles, 👂hear my podcasts, and 🎥see videos about batteries and related subjects by clicking the link below: ✔️ www.rameshnatarajan.in To✍️write to me with your comments and suggestions please do note my E-Mail below: ✔️ rameshnkailad@gmail.com To buy my books 📒, please click on one of the links given below: ✔️ https://relinks.me/9390661692 ️or https://relinks.me/B0BNXL1854 ✅Please click on the link below and read the article: https://medium.com/@rameshnkailad/are-you-a-battery-manufacturer-849cc913db44 Please follow me on medium so that you do not miss the articles and blogs posted by me regularly on Medium .
By Ramesh Natarajan June 2, 2023
A large number of lead acid batteries are used for stationary applications in high-capacity UPS systems to power the load in case of a power outage. Such large UPS systems with a lot of batteries can be found in hospitals, offices, large industries, power sub stations, nuclear power installations, railways and defence organizations. In these places the power outages are not acceptable and quality power is an absolute requirement. A lot of lead acid batteries are used for motive power applications in industries, airports, nuclear power stations, railways, docks, ordnance factories, godowns, ports, warehouses etc. where heavy materials are handled. These motive power batteries known as traction batteries are used to power forklifts, pallet trucks, platform trucks, scrubbers, industrial sweepers and automated guided vehicles or die loaders. The stationary batteries, as the name implies, are housed in rooms, and used in these rooms at the time of charge as well as discharge. In the case of traction batteries, these are generally used on vehicles, but usually charged in a location, wherein, all the batteries return at the end of a shift for a recharge. Thus, these batteries also have a dedicated battery room for charging. In both the above instances, where stationary or traction batteries are used, the batteries are usually allotted dedicated battery rooms. The users of batteries, often times, look up to the battery manufacturer for recommendations, as regards battery room design. The engineer who visits the site and interacts with the user, must also be preferably aware of the battery room design. A good battery room must be designed to adequately take care of - Corrosion related problems - Ventilation requirements - Battery room illumination - Drainage & effluent collection - Safety w.r.t. fire & explosion - Emergency exits - Safety boards, drills & signages - First aid facilities specially to attend to acid splash in eyes The electrolyte, sulphuric acid being highly corrosive, the flooring is likely to get damaged due to acid spills. Hence it is highly recommended that acid resistant, skid proof special vinyl (PVC) flooring is used. Please note that the thin decorative vinyl flooring, with joints at various places, is not suitable. The flooring required is of industrial grade, in roll form. It has to be laid with minimal joints & with a possibility of sealing of joints. This has to be stuck to flooring with sufficient gradient, sloping towards drains, so that, the flooring can be washed, to allow the waste water to flow into a collection tank. The drains and tanks also need to be fused to the flooring by welding. As regards ventilation requirements the room must have sufficient windows or exhaust fans to ensure that the gases evolved during charging are vented out. Care must be taken to ensure that the windows are kept closed, if the exhaust fans are fitted to the windows. This will ensure that the fresh air coming in from the windows are not exhausted out, thereby leaving the gases evolved from the batteries, to remain in the room. The windows with glasses may be required for natural lighting and can remain closed in normal times, when the exhaust is ON. These windows can be opened to remove the gases evolved from the batteries, when the exhaust fans are not installed or are not working due to some reason. The room must have fresh air inlet, such that, this air comes in from an area opposite to that of the exhaust location. It is highly recommended that hydrogen sensing alarms are installed in battery rooms, since the hydrogen gases evolved during charging of the batteries, is explosive in nature and is the main cause of battery fires. A concentration of over 4% hydrogen is the cause of fires and an audio-visual alarm can alert the user of batteries, much in advance. Such an alarm annunciation, enables the user to do the needful to avert the fire, by stopping the charging or clearing the room of Hydrogen. The user can operate additional exhaust fans or take necessary measures as deemed fit. In certain organizations the exhaust is connected to the hydrogen sensors such that they operate intermittently with an arrangement that these fans are switched on only when the hydrogen gas accumulates to a preset level – much below the 4% danger level. Battery rooms need to be sufficiently lit since the readings of voltage, specific gravity, electrolyte level need to be taken periodically and recorded – to obtain long life from the battery. This being a requirement the lighting used in the rooms need to be adequate and corrosion resistant too. The acid fumes must not corrode the fittings. Hence the lights must be such that they have PVC covers with no possibility of acid fume ingress. There has to be a light arrangement of the portable type to enable the maintenance engineer to check the batteries. Additionally, torches have to be available for checking electrolyte level in the cells or for inspecting the cells through the vent holes. Battery rooms need to be washed periodically to keep the floor clean and at all those times when the acid spills on the floor. Since the wash water, which is bound to be acidic in such instances, has to be drained out, without stagnating and being a cause of accident due to slippage on a wet floor, the design of the battery room floor has to be made, with a slope towards the drain. Gutters need to be made with a slope towards a collection tank. All these, the drains, gutters and collection tank, need to be lined and fused with the acid resistant floor. The collection tank can be emptied periodically and the acidic water can be neutralized before a proper disposal, in line with the regulatory norms. The battery room must not have any hanging wires and all electrical wires must be properly secured and bunched together in case they cannot be laid through cable trays due to some reason. Such bunched cables must not be in pathways and must be restricted to the space between the charger and battery with clear demarcation. Necessary fire extinguishers must be available at various locations for emergency use. Buckets filled with sand must also be kept at various locations for emergency use in case of a fire. Fire alarms and necessary outlets for water to put OFF the fires must be available since lead acid battery fires can be put OFF using water after switching OFF all electrical equipment and switchgear. The chargers and electrical connections must have proper tripping facilities to disconnect and switch OFF in case of a fire. All battery charging rooms must be designed with emergency exits since a single entry and exit is a very dangerous situation. The exits must be on opposite sides and must preferably lead to the open and not to another room which may be housing the charger or load connected to the battery room. Multiple emergency exits shall be better since a fire can also cause explosions with lead shrapnel causing grievous injury to people trapped inside in case of a fire. The room must have safety boards giving clear instructions as regards the safety parameters and work discipline to be followed. The standard operating procedures (SOPs) must be in the local language and additionally in English / Hindi whichever is the widely spoken and understood language. There must be appropriate signages guiding personnel to the emergency exits and wash rooms and towards the first aid facilities. Regular safety drills must be conducted and training must be imparted periodically to personnel working with batteries. At times a simple operation like checking of specific gravity if not done carefully can result in acid splash into the eyes. In such cases it is important to urgently splash eyes with water to prevent damage to the eyes. Hence it is recommended that an arrangement be made available to rinse the eyes with water. Such safety equipment for rinsing eyes is available and need to be preferably fitted near the battery rooms. A first aid kit to take care of burns due to fire with gauze cloth and other medicines must also be available near the battery room. These must not be in the battery room if there is a possibility of them being corroded. The battery room designed, taking the above points into consideration, shall solve a lot of issues for the battery user. A service engineer or maintenance department personnel taking care of batteries must be aware of the above requirements as regards battery rooms. To get in touch with me please click on the link below: https://linktr.ee/rameshnatarajan
By Ramesh Natarajan June 2, 2023
Let me start this article with a brief introduction on the health hazards which we all face in our day-to-day life. Traffic control police officers who diligently perform their duties on the road throughout the day are more susceptible to pollution caused by traffic compared to an industrial worker. Construction workers face dangers on a daily basis, and even young children growing up in construction sites are exposed to significant risks on a regular basis. Road accidents claim numerous lives every day. Surprisingly, pedestrians are now more vulnerable to risks than vehicle drivers. Workers in industries involved in manufacturing cement, fertilizers, cosmetics, glass items, chemicals, pharmaceutical products, paints, forged parts, ceramic products, etc. etc., endure uncomfortable working conditions while handling hazardous materials. Hospitals, often considered places where the sick go to receive treatment, expose their staff to various unknown and diverse illnesses on a daily basis. Imagine the challenges faced by those working there day in and day out. Individuals employed in electricity substations, nuclear installations, railways, and similar professions also encounter significant risks as part of their jobs. The battery industry, like many other industries, does utilize lead, which is classified as a hazardous material. It is extremely important to handle any hazardous chemical or situation appropriately. By understanding and addressing hazards and critical situations properly, we can effectively deal with them. The FAQ format which follows, aims to inform readers about this, and emphasizes that lead used in batteries, should not be seen as something to be condemned. 1. Is usage of lead acid batteries hazardous due to the batteries containing lead metal? No. Usage of lead acid batteries is not hazardous in the normal course though the major component in a lead acid battery is lead. Proper usage with periodic maintenance ensures that battery is not damaged and such batteries are very safe to be used. The terminals need to be kept clean to ensure that there is no lead sulphate formation by periodic cleaning and Vaseline application. Abuse of batteries by short circuiting can create problems of battery bursting since it contains a lot of stored energy. If you mean that lead used in batteries are classified as toxic then please understand that batteries are supplied enclosed in a container. The user does not come in contact with the lead unless he breaks open the battery and hence lead acid batteries are safe to use. It is for this reason that one finds a lot of batteries are used in home inverters, and lead, though classified as hazardous, does not harm the user. 2. Can lead toxicity be attributed to lead acid batteries? All reasons of lead toxicity cannot be attributed to lead acid batteries. In fact, the presence of lead in petrol, paints, cosmetics, colourful toys, a few ayurvedic medicines, pencils and various other items including the food that we consume has alarmed various agencies and institutions working to reduce lead toxicity. Lead was used by plumbers and a lot of water pipelines still exist in certain areas that have lead pipes. A majority of lead pipelines have been dismantled but a few underground pipes do exist, it seems. As regards food, the spices like turmeric and chilli powder, are at times found to be adulterated and they contain lead. Lead imparts the food colour and makes the product attractive. The usage of lead and lead compounds are in quite a variety of products found in and around our homes including cosmetics, batteries, paint, ceramic, solders, gasoline, lead pipes and ammunition. India has got unleaded petrol thanks to the efforts of the team led by the Lead Man of India Dr. Venkatesh Thuppil. He also spearheaded the campaign for lead safe paints. 3. What are the specific symptoms of lead toxicity due to lead? Unfortunately lead toxicity cannot be easily detected due to obvious or specific symptoms. Lead toxicity however has deleterious effects on humans especially women and children. 4. If the symptoms are not obvious, how does the doctor diagnose lead toxicity as the reason to start treatment? Since the symptoms are not specific in nature, diagnosis is often missed or delayed. This is unfortunate but a reality. Some of the symptoms of such patients are - Severe abdominal pain - Constipation - Problems in even passing flatus - Vomiting The doctors may find such persons - Anaemic - Having bluish gingival pigmentation at gum tooth line - Jaundiced - Having hypertension Additionally, such persons may have neurological features like - Irritability - Headache - Wrist Drop - Seizures - Foot Drop - Encephalopathy 5. Is it possible to find out as to whether a person has lead toxicity? Yes, it is possible to detect lead toxicity. The lead can be detected in blood and bones. Detection of lead is usually done by checking lead in blood. This was a test being carried out, by only a few laboratories. Of late, kits have been developed which give accurate results in a fast manner – thanks to the pioneering efforts carried out under the guidance of the Lead Man of India Dr. Venkatesh Thuppil. There are quite a few laboratories spread all over India which have the facilities to carry out these tests nowadays. 6. What is the cost of test done to determine Lead in Blood? The cost used to be quite high, but nowadays it is possible to determine the ‘lead in blood’ by pathological tests, costing in the range of Rs.800.00 to Rs.1200.00. These are done by quite a few pathological laboratories spread all over India. The tests are done using a test kit which gives fast results and these kits have been developed under the guidance of Dr. Venkatesh Thuppil. 7. Can lead toxicity be treated? Yes, lead toxicity can be treated. Of course, early detection helps and is highly preferred. There are some doctors who have specialised in the area of treatment of lead toxicity - due to their interest in the subject, long experience and a lot of study done by them. The organisation InSLAR (Indian Society for Lead Awareness and Research) conducts programs periodically for doctors to sensitise them on this subject. 8. What is the line of treatment adopted by doctors to treat lead toxicity? The treatment is Chelation Therapy. It helps to accelerate the excretion of lead from the body. The therapy ensures that body stores of lead is reduced. The chelating agent used binds with lead and allows lead to be passed in urine or faeces. Doctors reportedly use Diuretics which help remove water from the body. Doctors seemingly also use Vitamin C which is an anti-oxidant. Vitamin C is helpful to reduce oxidative stress and scavenge the free radicals generated due to lead. Constipation is attended to by giving laxatives and at times Enema is administered. Hypertension is monitored continuously and treated as necessary. All these are however to be done under expert medical supervision. Please do not consider this as medical advice for self-treatment. At times hospitalisation is resorted to depending on the extent of treatment and care required as well as the condition of the person. Dr. Surendra Chadha of Patliputra Nursing Home, Sameypur, New Delhi has treated many patients and has a lot of experience in this matter. The treatment continues after discharge, in cases wherein the patient was admitted in the hospital. 9. Is it true that lead used in batteries is classified as an occupational health hazard? Yes, lead acid battery manufacturing involves handling, storage and use of lead at all stages of manufacturing. It is therefore considered as an occupational health hazard with strict guidelines imposed on battery manufacturing companies. 10. Can washing of hands with normal soap remove lead from the hands? The washing of hands with normal soap, does clean the hands, to some extent. Detergents have been found to be more effective though. Hence a lot of factories recommend that workers use strong detergents. These however do not remove the lead completely, despite scrubbing and brushing. Special liquid soaps developed for lead removal are available and these need to be used to ensure Lead Free hands. These soaps which have been developed guarantee the removal of lead. The company which has developed this after a lot of research offers proof of lead removal by a simple test method. A spray is used on cleaned hands to test and this indicates the presence of lead even if it is in trace amounts. This company’s product has been approved by leading battery manufacturers and the manufacturer of this cleaning agent is an approved vendor to reputed large battery manufacturers. 11. What are the steps to be taken by battery manufacturers to ensure that workers working in battery factories are not affected by lead? Battery manufacturers have devised various methods to ensure clean environment and prevent workmen from getting affected by the usage of lead in battery factories. These may not be comprehensive though. There is always scope for improvement and more and more ways are devised to ensure lead free environmental conditions at the workplace. I am listing a few steps below: - Provision of appropriate masks and insisting on use of these. - Provision of hand gloves and insisting on use of these. - Fixing of dust collectors at various points where lead dust is generated to ensure that the air purity levels are within the prescribed norms. - Ensuring availability and insisting on changing into fresh uniforms for all employees on their arrival for duty. - Ensuring that employees have breakfast or adequate snacks prior to start of work to ensure that their stomach is not empty prior to start of work. - Insisting on cutting of nails by providing nail cutting stations and periodic checking of nail growth. - Insisting on a bath including head shower for all employees after work timings using the approved soap and shower provided by the factory. - Insisting on hand wash using approved soap prior to having meals in the canteen and periodic checking of the washed hands for lead traces using test spray on a random basis. - Providing a laundromat facility within the factory to ensure that the employees remove their uniform for a wash after their work shift. Such clothes are washed using special soap that is prepared for lead removal. - Using an industrial wet scrubber or sweeper shall ensure that floors are not swept manually and lead dust is not made air borne. 12. Are such special soaps available that are used by these large companies which are approved and found to be effective? Yes, these soaps are available for various purposes as Hand Wash, Body Wash, Uniform Wash and Respirator Wash. The company which provides this soap to established and reputed battery manufacturers is based in Chennai and is Surfactants & Allied Chemicals Pvt. Ltd. You can contact them by sending a mail to sacindia@gmail.com or nbh@surfactants.in or by calling up Mr. Narasimha Rao Harnoor on +91 9380670760. 13. What are the effects of lead toxicity? The effects of acute lead toxicity are either or a combination of the following: - Abdominal pain - Problems in passing stool - Pain at joints - Constipation - Neuro related issues - Lack of appetite - Sleep disturbances - Inability to concentrate - Bone related issues - Memory affecting problems - Effects on fertility and reproduction 14. Why are women usually not allowed to work in battery manufacturing factories? The possibility of women facing problems in reproduction, due to their fertility being affected, is the major reason for women not being permitted to work in battery factories. Moreover, the possibility of children getting affected through these women working, in a hazardous environment, is another reason for the recommendation that women must not work in battery factories. With the introduction of safe and improved work conditions and periodic monitoring of health, a few battery factories have reportedly started incorporating women in some areas of work, in their battery factories. Finally, the work environment conditions matter and a safe environment becomes the deciding factor in such cases. 15. Which area or what operations in a lead acid battery industry has the most lead exposure? Lead smelting, lead alloying, lead oxide manufacturing, red lead powder manufacturing and certain sections in battery manufacturing factory like paste mixing, tubular positive plate filling, lug brushing etc are a few areas where powder is handled. An effective dust collection system and good industry practices however ensure safety of all concerned. Conformance to local regulations and norms, specified by the national and state pollution boards, help in keeping employees safe. A lot of suggestions and recommendations of OSHA in relation to battery industry are implemented, enforced and practised by many battery manufacturers to ensure employee safety and well-being. 16. Is there any organisation working on this topic, in case more details are required about lead toxicity or treatment? InSLAR, the Indian Society for Lead Awareness and Research is an organisation which conducts conferences, spreads awareness and thereby trains medical students on various aspects of lead toxicity. The society works closely with various types of industries who need their guidance to address the needs of occupational lead hazard. To get in touch with me please click on the link below: https://linktr.ee/rameshnatarajan
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