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.


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Description Price Capacity Nominal Voltage Construction Terminal Type Designed for Cyclic Application Weight Designed High Rate Application Eurobat Classification Operating Temperature Range Flame Resistant
RS Stock No. 883-8850
BrandRS PRO
MYR947.61
Each
units
38Ah 12V Gel T6 Yes 13.5kg No 10 to 12 Years -20 → +55°C No
RS Stock No. 883-8844
BrandRS PRO
MYR593.50
Each
units
17Ah 12V Gel T12 Yes 5.8kg No 10 to 12 Years -20 → +55°C No
RS Stock No. 883-8853
BrandRS PRO
MYR594.08
Each
units
26Ah 12V Gel T12 Yes 8.7kg No 10 to 12 Years -20 → +55°C No
RS Stock No. 122-4862
BrandRS PRO
MYR1,009.99
Each
units
42Ah 12V AGM T6 No 14.5kg No - -20 → +50°C No
RS Stock No. 122-4863
BrandRS PRO
MYR1,511.64
Each
units
80Ah 12V AGM T6 No 23.8kg No - -15 → +50°C No
RS Stock No. 883-8869
BrandRS PRO
MYR1,131.78
Each
units
60Ah 12V Gel T6 Yes 21.5kg No 10 to 12 Years -20 → +55°C No
RS Stock No. 537-5472
BrandRS PRO
MYR188.51
Each
units
3.2Ah 12V AGM Faston F1 Yes 1.4kg No 3 to 5 Years -15 → +50°C No
RS Stock No. 174-8859
BrandRS PRO
MYR799.69
1 Box of 1
Box(es)
28Ah 12V AGM T3 Yes 9.5kg Yes - 0 → +40 °C, -15 → +50 °C No
RS Stock No. 537-7305
BrandRS PRO
MYR251.73
Each
units
12Ah 12V AGM T1 Yes 3.5kg No 3 to 5 Years -15 → +50°C No
RS Stock No. 727-0391
BrandRS PRO
MYR399.94
Each
units
20Ah 12V AGM T12 Yes 5.8kg No 3 to 5 Years -15 → +50°C No
RS Stock No. 174-8862
BrandRS PRO
MYR1,456.82
1 Box of 1
Box(es)
90Ah 12V AGM T6 Yes 27.5kg Yes - 0 → +40 °C, -15 → +50 °C Yes
RS Stock No. 150-1558
BrandRS PRO
MYR83.67
Each
units
1.2Ah 12V AGM T1 Yes 570g No 3 to 5 Years -15 → +50°C Yes
RS Stock No. 537-5501
BrandRS PRO
MYR523.11
Each
units
24Ah 12V AGM T12 Yes 7.2kg No 3 to 5 Years -20 → +60°C No
RS Stock No. 198-4037
BrandRS PRO
MYR138.74
Each
units
7.8Ah 12V AGM T2 No - No - - No
RS Stock No. 174-8856
BrandRS PRO
MYR167.56
1 Box of 1
Box(es)
12Ah 6V AGM Faston F1 Yes 1.8kg Yes - 0 → +40 °C, -15 → +50 °C No
RS Stock No. 686-7253
BrandRS PRO
MYR110.66
Each
units
5Ah 12V AGM Faston F1 Yes 1.8kg No 3 to 5 Years -20 → +60°C No
RS Stock No. 150-1556
BrandRS PRO
MYR197.68
Each
units
7Ah 12V AGM Faston F1 Yes 2.18kg No 3 to 5 Years -15 → +50°C Yes
RS Stock No. 537-5517
BrandRS PRO
MYR759.42
Each
units
38Ah 12V AGM T6 Yes 12.2kg No 3 to 5 Years -20 → +60°C No
RS Stock No. 537-5422
BrandRS PRO
MYR83.74
Each
units
4Ah 6V AGM Faston F1 Yes 740g No 3 to 5 Years -20 → +60°C No
RS Stock No. 174-8860
BrandRS PRO
MYR1,131.49
1 Box of 1
Box(es)
65Ah 12V AGM T6 Yes 19.2kg Yes - 0 → +40 °C, -15 → +50 °C No