Sealed Lead Acid Batteries | RS
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    Lead Acid Batteries

    Lead acid batteries can supply high surge currents despite having a very low energy-to-weight ratio and a low energy-to-volume ratio, meaning that they are able to meet large power requirements applications such as backup power supply storage. Their robustness and long lifetime make sealed lead acid batteries ideal for renewable energy systems: in fact, they are the most commonly used batteries across photovoltaic (PV) applications such as solar panels, where they capture surplus energy and store it for later use. They are available in a wide range of sizes and voltages to suit your requirements, typically with voltages of 6V to 24V.

    What are lead acid rechargeable batteries used for?

    Lead acid batteries are widely used in power storage, such as uninterruptible power source from automobiles to larger-scale power systems.

    • Emergency lights
    • Uninterruptible power supplies (UPS)
    • Alarm systems
    • Communication systems

    How do lead acid batteries work?

    The oxygen in the active material (lead dioxide) reacts with hydrogen ions to form water, and the lead reacts with sulphuric acid to form lead sulphate. The ions moving through the electrolyte then create the current flow.

    What are sealed lead acid batteries?

    Sealed lead acid batteries (also known as SLAs) are a modification of the original flooded style battery that effectively prevent the user of the battery from accessing the cell compartments. They are designed to be maintenance-free, leak-proof and position insensitive, and have enough acid within the battery to maintain the chemical reaction for prolonged periods.

    Can sealed lead acid batteries be recharged?

    In the case that SLA batteries have become drained, they can be recharged with the appropriate charger. You can browse our selection of lead acid battery chargers here.

    Gel Vs AGM Lead Acid Batteries

    AGM (Absorbed Glass Mat)

    AGM batteries contain a special glass mat that is made to wick the battery electrolytes between the battery plates. Only enough liquid is stored in the battery to keep the specially designed glass mat wet, so if the AGM battery is broken no free liquid can leak out. AGM batteries are preferred when a large number of amps are required. The life expectancy remains excellent in most cases if they are not discharged more than 60% between recharges and/or recharged fully every 3-6 months.

    Gel Batteries

    Gel batteries are named as such because silica is used within the battery to turn the acid into a thick, gel-like liquid and preventing the batteries from leaking. This gel allows the electrons to flow between plates but don't offer the same power capacity as the same physical size AGM batteries would. Gel batteries alternatively excel in slow discharge rates and slightly higher operating temperatures, with an excellent deep cycle capability. Recharging these batteries must be done correctly or it will suffer a premature failure.

    174 Products showing for Lead Acid Batteries

    RS PRO
    -
    1.2Ah
    12V
    AGM
    T1
    97 x 43 x 52mm
    + 50°C
    - 20°C
    Stand by Use
    Lead Acid
    3 to 5 Years
    -20 → +50°C
    RS PRO
    570g
    RS PRO
    -
    18Ah
    12V
    AGM
    T12
    181.5 x 76.5 x 167.5mm
    + 50°C
    - 20°C
    Stand by Use
    Lead Acid
    3 to 5 Years
    -20 → +50°C
    RS PRO
    5.4kg
    RS PRO
    -
    20Ah
    12V
    AGM
    T12
    181.5 x 76.5 x 167.5mm
    + 50°C
    - 20°C
    Stand by Use
    Lead Acid
    3 to 5 Years
    -20 → +50°C
    RS PRO
    5.8kg
    RS PRO
    Designed High Rate Application
    28Ah
    12V
    AGM
    T3-A
    164 x 125 x 176mm
    + 50°C
    - 20°C
    Stand by Use
    Lead Acid
    3 to 5 Years
    -20 → +50°C
    RS PRO
    9.5kg
    RS PRO
    -
    10Ah
    6V
    AGM
    T1
    151 x 51 x 94mm
    + 50°C
    - 20°C
    Stand by Use
    Lead Acid
    3 to 5 Years
    -20 → +50°C
    RS PRO
    1.6kg
    RS PRO
    -
    3.2Ah
    12V
    AGM
    T1
    134 x 67 x 59.5mm
    + 50°C
    - 20°C
    Stand by Use
    Lead Acid
    3 to 5 Years
    -20 → +50°C
    RS PRO
    1.4kg
    RS PRO
    Flame Resistant
    12Ah
    12V
    AGM
    T1
    151 x 98 x 95mm
    + 50°C
    - 20°C
    Stand by Use
    Lead Acid
    3 to 5 Years
    -20 → +50°C
    RS PRO
    3.5kg
    RS PRO
    Flame Resistant
    24Ah
    12V
    AGM
    T12
    166 x 175 x 125mm
    + 50°C
    - 20°C
    Stand by Use
    Lead Acid
    3 to 5 Years
    -20 → +50°C
    RS PRO
    7.2kg
    RS PRO
    Designed High Rate Application
    9Ah
    12V
    AGM
    T1
    151 x 65 x 93.5mm
    + 50°C
    - 20°C
    Stand by Use
    Lead Acid
    3 to 5 Years
    -20 → +50°C
    RS PRO
    2.5kg
    RS PRO
    -
    7Ah
    12V
    AGM
    T1
    151 x 65 x 93.5mm
    + 50°C
    - 20°C
    Stand by Use
    Lead Acid
    3 to 5 Years
    -20 → +50°C
    RS PRO
    2.2kg
    RS PRO
    Flame Resistant
    7Ah
    12V
    AGM
    T1
    151 x 65 x 93.5mm
    + 50°C
    - 20°C
    Stand by Use
    Lead Acid
    3 to 5 Years
    -20 → +50°C
    RS PRO
    2.18kg
    RS PRO
    -
    6.5Ah
    12V
    AGM
    T1
    151 x 65 x 93.5mm
    + 55°C
    - 20°C
    Stand by Use
    Lead Acid
    6 to 9 Years
    -20 → +55°C
    RS PRO
    2.08kg
    RS PRO
    Designed for Cyclic Application
    17Ah
    12V
    Gel
    T12
    181.5 x 76.5 x 167.5mm
    + 60°C
    - 20°C
    Cyclic
    Lead Acid
    6 to 9 Years
    -20 → +60°C
    RS PRO
    5.8kg
    RS PRO
    Designed for Cyclic Application
    26Ah
    12V
    Gel
    T12
    166 x 175 x 125mm
    + 60°C
    - 20°C
    Cyclic
    Lead Acid
    6 to 9 Years
    -20 → +60°C
    RS PRO
    8.7kg
    RS PRO
    -
    5Ah
    12V
    AGM
    T1
    90 x 70 x 101mm
    + 50°C
    - 20°C
    Stand by Use
    Lead Acid
    3 to 5 Years
    -20 → +50°C
    RS PRO
    1.8kg
    RS PRO
    Designed for Cyclic Application
    100Ah
    12V
    Gel
    T11
    330 x 173 x 212mm
    + 60°C
    - 20°C
    Cyclic
    Lead Acid
    10 to 12 Years
    -20 → +60°C
    RS PRO
    31kg
    RS PRO
    -
    4Ah
    6V
    AGM
    T1
    70 x 47 x 100mm
    + 50°C
    - 20°C
    Stand by Use
    Lead Acid
    3 to 5 Years
    -20 → +50°C
    RS PRO
    740g
    RS PRO
    -
    2.3Ah
    12V
    AGM
    T1
    178 x 35 x 60mm
    + 50°C
    - 20°C
    Stand by Use
    Lead Acid
    3 to 5 Years
    -20 → +50°C
    RS PRO
    970g
    RS PRO
    Flame Resistant,Designed High Rate Application
    65Ah
    12V
    AGM
    T6
    348 x 167 x 178mm
    + 50°C
    - 20°C
    Stand by Use
    Lead Acid
    10 to 12 Years
    -20 → +50°C
    RS PRO
    19.2kg
    RS PRO
    -
    80Ah
    12V
    AGM
    T6
    260 x 168 x 208mm
    + 50°C
    - 20°C
    Stand by Use
    Lead Acid
    10 to 12 Years
    -20 → +50°C
    RS PRO
    23.8kg
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