Unik Techno • September 8, 2020

What are the physical differences between a lead-acid car battery and a lead-acid deep-cycle battery?

The physical differences in the external construction is generally wrt the take off terminals.

A car battery classified as automotive battery invariably has taper terminals with positive terminals being of a bigger diameter compared to negative terminals which are of a relatively smaller diameter. These are of a defined standard size conforming to international standards and SAE specifications.


Deep cycle batteries have taper terminals or L shaped terminals or embedded type terminals such that the customer can connect lugs of cable using different types of terminations.

The physical differences in the internal construction is as follows:

Automotive batteries have very thin positive and negative plates with number of plates being more so that the surface area is very high to enable delivery of high currents required for engine cranking applications.


On a like to like same Voltage & Ah basis deep cycle batteries have thick negative plates and much thicker positive plates if the batteries are of pasted plate type. In case they are of tubular type the positive plates are of heavy tubular design construction types and negatives are made of thick pasted plates. The number of plates per cell is also lesser in relation to automotive batteries.

The separators used in automotive batteries are very thin with low electrical resistance and the separators have a lower back web thickness.

The separators used in deep cycle batteries are much thicker with thicker backwebs to resist the effects of oxidation during cycling.


The lead busbars used for connecting the plates together in parallel and lead components for interconnection of cells as well as pillars on the end terminal sides are much thicker in deep cycle batteries compared to automotive. This is required since voltage drops are not acceptable when connected to a continuous load during long duration operation of the deep cycle batteries.

The vent plugs of a deep cycle battery are of the Flip Top type to enable water topping up which is required more frequently in the case of deep cycle batteries. Deep cycle batteries are subjected to 80% depth of discharge on a daily basis followed by a recharge daily thereby requiring water top up more frequently.


In certain cases the vent plugs of deep cycle battery are designed to be compatible to the auto filling system unlike in automotive batteries. Automotive batteries are nowadays fitted mostly with coin flush vent plugs which need not be opened for upto six months at a stretch.

The weight of automotive batteries are much lower compared to a deep cycle battery of same voltage and Ah capacity.



I have restricted my answer to the physical differences externally visible and to the physical differences of components which are obvious during manufacturing process.

Caring for Your Forklift Battery in the Winter

By Unik Techno • January 31, 2025
When it comes to powering industrial equipment, the choice of battery plays a crucial role in ensuring efficiency and reliability. Traction and semi-traction batteries are key players in this arena, each designed to meet specific operational needs. This blog delves into what these batteries are and their applications in industrial settings. What are Traction Batteries? Traction batteries are specialised rechargeable batteries used to power heavy-duty industrial equipment. Unlike traditional starter batteries, they are engineered to provide reliable and consistent power over extended periods, making them suitable for applications that require deep discharges and frequent recharging. These batteries are typically made up of several cells connected in series, with the most common types being lead-acid traction batteries and lithium-ion . Lead-acid traction batteries are favored for their cost-effectiveness and durability, whereas lithium-ion traction batteries are sought after for their high energy density and lower maintenance requirements. What are the Applications of Traction Batteries? Traction batteries are widely used for rigorous applications in sectors, such as golf carts, renewable energy systems, medical equipment, and power backup systems. Material handling and industrial applications benefit significantly from these batteries. Traction batteries for material handling equipment are used for powering forklifts, pallet jacks, and other material-handling equipment. The high capacity and durability of lead-acid traction batteries and lithium-ion traction batteries make them perfect for these tasks. They ensure reliable performance and longevity in demanding environments, including warehouses and factories that rely on robust power supply. What are Semi-traction Batteries? Semi-traction batteries, also known as monobloc batteries, are engineered for exceptional performance in industrial settings where consistent power is required over extended periods. These batteries are specifically designed to handle repetitive and intense cycle use. A semi-traction battery is constructed with multiple electrically connected cell compartments containing electrodes, electrolytes, terminals, and separators. These cells can be arranged in series or parallel configurations to tailor the battery's performance to specific applications. Semi-traction batteries are engineered to endure harsh conditions, including wide temperature fluctuations (-30°C to 60°C) and exposure to shocks and vibrations. What are the Applications of Semi-traction Batteries? Semi-traction batteries are versatile and provide dependable power for various applications where the energy demand is moderate and consistent, but not as intensive as in heavy industrial use. These batteries are particularly effective in settings where a reliable energy source is needed over an extended period. They may be used for less intensive off-grid solar power systems and energy storage applications. Semi-traction batteries are particularly advantageous in golf carts and industrial cleaning equipment . Golf carts benefit from the battery’s ability to endure frequent discharge cycles, vibrations, and temperature variations, providing reliable power in varied conditions. Similarly, semi-traction batteries excel in industrial cleaning equipment, such as floor scrubbers, where they provide the necessary power to operate efficiently over long periods, withstanding the rough conditions typical in industrial environments. In the world of industrial equipment, the choice between traction and semi-traction batteries can significantly impact operational efficiency and longevity. Traction batteries provide robust, reliable power for heavy-duty applications, such as material handling equipment, while semi-traction batteries offer a dependable solution for moderate energy needs, like those found in golf carts and cleaning machines. By selecting the right type of battery for each specific application, businesses can ensure uninterrupted operations, reduce downtime, and maintain consistent performance in all conditions. UNIK recognises the diverse battery needs of different industries and is here to help you find the perfect fit. Contact us today to learn how our battery solutions can power your success.

The Power Behind Industrial Equipment- A Guide to Traction and Semi-Traction Batteries

By Unik Techno • December 26, 2024
When it comes to powering industrial equipment, the choice of battery plays a crucial role in ensuring efficiency and reliability. Traction and semi-traction batteries are key players in this arena, each designed to meet specific operational needs. This blog delves into what these batteries are and their applications in industrial settings. What are Traction Batteries? Traction batteries are specialised rechargeable batteries used to power heavy-duty industrial equipment. Unlike traditional starter batteries, they are engineered to provide reliable and consistent power over extended periods, making them suitable for applications that require deep discharges and frequent recharging. These batteries are typically made up of several cells connected in series, with the most common types being lead-acid traction batteries and lithium-ion . Lead-acid traction batteries are favored for their cost-effectiveness and durability, whereas lithium-ion traction batteries are sought after for their high energy density and lower maintenance requirements. What are the Applications of Traction Batteries? Traction batteries are widely used for rigorous applications in sectors, such as golf carts, renewable energy systems, medical equipment, and power backup systems. Material handling and industrial applications benefit significantly from these batteries. Traction batteries for material handling equipment are used for powering forklifts, pallet jacks, and other material-handling equipment. The high capacity and durability of lead-acid traction batteries and lithium-ion traction batteries make them perfect for these tasks. They ensure reliable performance and longevity in demanding environments, including warehouses and factories that rely on robust power supply. What are Semi-traction Batteries? Semi-traction batteries, also known as monobloc batteries, are engineered for exceptional performance in industrial settings where consistent power is required over extended periods. These batteries are specifically designed to handle repetitive and intense cycle use. A semi-traction battery is constructed with multiple electrically connected cell compartments containing electrodes, electrolytes, terminals, and separators. These cells can be arranged in series or parallel configurations to tailor the battery's performance to specific applications. Semi-traction batteries are engineered to endure harsh conditions, including wide temperature fluctuations (-30°C to 60°C) and exposure to shocks and vibrations. What are the Applications of Semi-traction Batteries? Semi-traction batteries are versatile and provide dependable power for various applications where the energy demand is moderate and consistent, but not as intensive as in heavy industrial use. These batteries are particularly effective in settings where a reliable energy source is needed over an extended period. They may be used for less intensive off-grid solar power systems and energy storage applications. Semi-traction batteries are particularly advantageous in golf carts and industrial cleaning equipment . Golf carts benefit from the battery’s ability to endure frequent discharge cycles, vibrations, and temperature variations, providing reliable power in varied conditions. Similarly, semi-traction batteries excel in industrial cleaning equipment, such as floor scrubbers, where they provide the necessary power to operate efficiently over long periods, withstanding the rough conditions typical in industrial environments. In the world of industrial equipment, the choice between traction and semi-traction batteries can significantly impact operational efficiency and longevity. Traction batteries provide robust, reliable power for heavy-duty applications, such as material handling equipment, while semi-traction batteries offer a dependable solution for moderate energy needs, like those found in golf carts and cleaning machines. By selecting the right type of battery for each specific application, businesses can ensure uninterrupted operations, reduce downtime, and maintain consistent performance in all conditions. UNIK recognises the diverse battery needs of different industries and is here to help you find the perfect fit. Contact us today to learn how our battery solutions can power your success.

The Role of Batteries in Sustainable Energy Solutions

By Unik Techno • August 29, 2024
As the world moves towards a future powered by renewable energy sources, the importance of energy storage systems, particularly batteries, has become increasingly apparent. Batteries play a crucial role in sustainable energy solutions by enhancing energy efficiency, stabilising the grid, and enabling the widespread adoption of renewable energy. This article explores the integral role of batteries in sustainable energy systems and how advancements in battery technology are driving the transition to a greener future. The Need for Energy Storage in Renewable Energy Systems Renewable energy sources like solar and wind power are inherently variable. Solar power is only generated during daylight hours, and wind energy depends on weather conditions. This variability poses a significant challenge to maintaining a consistent and reliable energy supply. Traditional energy grids, designed for steady power generation from fossil fuels, need help integrating these intermittent renewable energy sources. Energy storage systems, particularly batteries, are essential for overcoming this challenge. By storing excess energy generated during peak production periods, batteries ensure that energy is available when renewable energy sources are not generating power. This capability stabilizes the grid and maximizes the use of renewable energy, reducing reliance on fossil fuels. Battery Storage: A Cornerstone of Sustainable Energy Solutions Battery storage systems are a cornerstone of sustainable energy solutions. They provide several key benefits that support the transition to a more sustainable energy landscape: Grid Stability and Energy Efficiency: Batteries stabilize the grid by balancing supply and demand, preventing blackouts, and improving energy efficiency by storing excess energy for later use. Integration of Renewables Batteries enable the smooth integration of renewable energy sources into the grid, allowing for higher renewable penetration without compromising reliability. Decentralized Energy Solutions: Batteries support decentralized energy systems like microgrids, offering flexibility and reliability, especially in remote or underserved areas. Advancements in Battery Technology The effectiveness of battery storage systems in sustainable energy solutions largely hinges on the underlying technology. Lead-acid batteries have long been the tried and tested technology, but lithium-ion batteries are increasingly becoming the most widely used type in energy storage systems. Recent advancements in lithium-ion technology have significantly improved their energy density, lifespan, and safety, making them more suitable for large-scale applications. They offer a high energy density, allowing for more energy storage in a smaller space, which benefits both residential and commercial energy systems. Ongoing research enhances their performance and sustainability, including developing recycling processes to mitigate environmental impact. Beyond lithium-ion, researchers are exploring next-generation battery technologies, such as solid-state and flow batteries. These promising innovations offer even greater storage capacity, faster charging times, and longer lifespans, which could further boost the adoption of renewable energy. The Future of Sustainable Energy with Battery Storage The future of sustainable energy is inextricably linked to the development and deployment of advanced battery storage systems. As renewable energy sources grow, the demand for efficient, reliable, and scalable energy storage solutions will increase. Batteries will be pivotal in this transition, enabling a more resilient and sustainable energy grid. Governments and businesses worldwide recognize battery storage's importance in achieving their sustainability goals. Investments in battery technology are growing, and innovative projects are being launched to demonstrate the potential of batteries in real-world applications. Conclusion Batteries are more than just a component of sustainable energy systems—they are the linchpin that holds them together. By providing the necessary storage and flexibility, batteries enable the effective integration of renewable energy sources, enhance energy efficiency, and contribute to grid stability. As technology advances, batteries' role in sustainable energy solutions will become even more critical, paving the way for a cleaner, more sustainable future. By embracing battery storage as a key element of the energy transition, we can unlock renewable energy's full potential and move closer to a world powered by sustainable energy solutions.
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