Lead Acid Batteries

Lead acid batteries are a robust and cost-effective energy storage solution known for their ability to deliver high surge currents, making them ideal for applications with large power demands. While they have a low energy-to-weight ratio and energy-to-volume ratio, their long lifespan and ability to handle high discharge rates make them suitable for various industrial uses. They are available in a wide range of sizes and voltages to suit your requirements, typically with voltages of 2V to 24V.

Some common types of lead acid batteries include flooded lead acid batteries which require regular maintenance, and sealed lead acid batteries (SLA), also known as valve regulated lead acid batteries (VRLA), which are also known as maintenance-free lead acid batteries and offer a safe, leak-proof design.

How Lead Acid Batteries Work

Lead acid batteries generate electricity through a chemical reaction between lead plates and a sulfuric acid electrolyte. During discharge, lead dioxide on the positive plate reacts with sulfuric acid to form lead sulfate. Simultaneously, lead on the negative plate also reacts with sulfuric acid to form lead sulfate. This process releases electrons, creating an electrical current that flows through an external circuit. When a lead acid battery is charged, the reverse reaction occurs. An external power source forces electrons back into the battery, converting the lead sulfate back into lead dioxide on the positive plate and lead on the negative plate, replenishing the sulfuric acid electrolyte. The movement of ions within the electrolyte facilitates the flow of current, and the overall chemical reaction is highly efficient, allowing for repeated charge and discharge cycles.

Benefits of Sealed Lead Acid (SLA) Batteries

A sealed lead acid battery (SLA), also known as Valve Regulated Lead Acid (VRLA) batteries or maintenance-free lead acid battery, offers numerous advantages that make them a popular choice for various applications. Here are some of their key benefits:

• Maintenance Free: Sealed lead acid batteries are maintenance-free, eliminating the need for regular topping up with water or electrolyte.
• Sealed Construction: The sealed construction prevents leaks and spills, making them safe for use in various environments and orientations.
• Versatility: SLA batteries are available in a wide range of sizes and voltages, making them suitable for various applications, from backup power systems to portable devices.
• Long Service Life: Sealed lead acid batteries offer a long service life, especially in standby applications, providing reliable performance for an extended period.
• Safety: Valve regulated lead acid batteries incorporate safety features such as pressure relief valves to prevent excessive internal pressure buildup, ensuring safe operation.
• Improved Handling: Sealed construction allows for easier and safer handling compared to flooded batteries.

Types of Lead Acid Batteries

Lead acid batteries in Singapore and around the world are broadly categorised into different types based on their construction and application. Understanding these types is crucial for selecting the right lead acid battery for your specific needs.

Flooded Lead Acid Batteries

Flooded lead acid batteries, also known as wet cell batteries, are the most traditional type. They feature a liquid electrolyte that needs periodic topping up with distilled water to compensate for water loss during charging. These lead acid batteries are typically less expensive but require regular maintenance.

Valve Regulated Lead Acid Battery or Maintenance-Free Sealed Lead Acid Battery

Valve regulated lead acid batteries (VRLA), also known as sealed lead acid batteries (SLA) or maintenance-free lead acid batteries, are designed with a sealed construction that prevents electrolyte leakage and spills. They are widely used in various applications due to their safety and convenience.

Gel Batteries

Gel batteries are a type of VRLA battery that uses a gelled electrolyte. They offer good resistance to shock and vibration and are often used in deep-cycle applications.

Absorbed Glass Mat (AGM) Batteries

AGM batteries are another type of VRLA battery that uses a fibreglass mat saturated with electrolyte to prevent spills. They offer high discharge rates and are often used in applications requiring high power output.

Specialised Type

Lead acid battery suppliers may also offer specialised types designed for specific applications.

Deep Cycle Batteries

Deep cycle batteries are designed to withstand repeated deep discharges, making them suitable for applications like solar power systems and electric vehicles.

Starting Batteries

Starting batteries, also known as SLI (Starting, Lighting, Ignition) batteries, are designed to provide high cranking power for starting engines in vehicles and other equipment. They are not designed for deep discharge and will be damaged by repeated deep cycles.

Dual-Purpose Batteries

Dual-purpose batteries combine the features of deep cycle and starting batteries, offering a balance of high cranking power and deep discharge capability. They are suitable for applications that require both starting power and sustained energy delivery, such as RVs and boats.

Industrial Applications of Lead Acid Batteries

Lead acid batteries are widely used in various industrial applications due to their reliability, cost-effectiveness, and ability to provide high surge currents. Lead acid battery suppliers cater to a diverse range of industries, offering lead acid batteries in various sizes and configurations to meet specific power requirements. Common industrial applications include:

Motive Power

Lead acid batteries are commonly used as a reliable power source for motive power applications.

• Forklifts & Material Handling Equipment: Deep cycle lead acid batteries are commonly used to power forklifts, pallet jacks, and other material handling equipment, providing reliable performance for demanding operations.
• Electric Vehicles: Lead acid batteries are used in some electric vehicles, particularly in niche applications where cost is a primary concern.

Backup Power

Lead acid battery Singapore applications often include backup power systems, ensuring continuous operation during power outages. Some examples of backup power applications are:

• Uninterruptible Power Supplies (UPS): Sealed lead acid batteries (SLA) are widely used in uninterruptible power supplies (UPS) to provide backup power for critical equipment during power failures.
• Emergency Lighting: Maintenance-free lead acid batteries are commonly used in emergency lighting systems, providing illumination in the event of a power outage.

Renewable Energy Source

A lead acid battery is also capable of storing energy from renewable sources. For this use case, you’ll often find them in:

• Solar Power Systems: Lead acid batteries are often used in solar power systems to store excess energy generated during the day for use at night or during periods of low sunlight.
• Wind Power Systems: Similarly, a lead acid battery is used in wind power systems to store energy generated by wind turbines, providing a stable power supply even when wind conditions are variable.

Industrial Equipment & Machinery

A sealed lead acid battery is commonly used to power various industrial equipment and machinery such as:

• Starting Batteries for Generators & Engines: Lead acid batteries are commonly used as starting batteries for generators, engines, and other industrial equipment, providing the high current needed for startup.
• Powering Industrial Tools and Equipment: Batteries can power various handheld tools and equipment, such as welding machines, power tools, and portable lighting systems.

Key Considerations When Choosing a Lead Acid Battery

• Application Requirements: Determine the specific power requirements of the application, including voltage, current, and discharge rate.
• Battery Type: Select the appropriate lead acid battery type based on the application's requirements for maintenance, spill resistance, and cycle life.
• Capacity: Choose a sealed lead acid battery with sufficient capacity (Ah - Amp hours) to meet the energy storage needs of the application.
• Size and Weight: Consider the physical size and weight of the battery, especially for portable applications.
• Operating Temperature: Ensure the lead acid battery can operate within the expected temperature range of the application to reduce chances of failure.
• Safety Features: Look for valve-regulated lead acid batteries with safety features such as pressure relief valves and flame-retardant materials.
• Life Expectancy: Understand the expected lifespan of the battery under typical operating conditions.

Delivery Information

RS is your trusted supplier and distributor for lead acid batteries in Singapore. From sealed lead acid batteries (SLA) to deep cycle batteries for backup power, motive power, or renewable energy applications, browse our online range to find battery solutions from popular brands such as Yuasa, Siemens, Panasonic, and more. We carry batteries in multiple voltages from 6V to 12V, 18V, 24V and more. We also carry specialty size rechargeable batteries, battery packs, multimeters and more for all your portable power needs.

Order with us today and enjoy delivery islandwide. For details on delivery services and charges, please visit our Delivery Information page.