Lead Acid Batteries

Lead acid batteries are the oldest type of rechargeable battery. Despite having a very low energy-to-weight ratio and a low energy-to-volume ratio, they are able to supply high surge currents, meaning that they are able to meet the power requirements of applications such as storage in back-up power supplies in mobile phone towers.

These sealed lead acid batteries have many used in the today's world. They come in a wide range of sizes, typically with voltages of 6V to 12V. Some typical uses are:


  • Emergency Lights
  • Uninterruptible power supplies (UPS)
  • Alarm Systems
  • Communication Systems

GEL Vs AGM Lead Acid Batteries


AGM (Absorbed Glass Mat)


These batteries contain only enough liquid to keep the specially designed glass mat wet. The glass mat is made to wick the battery electrolytes between the battery plates. If the AGM battery is broken no free liquid leaks out.

AGM batteries are preferred when a large amount 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 Cell Batteries


These batteries contain a silica type gel, which is a thick paste like material. It allows the electrons to flow between plates, but will not leak in a gel battery if the case is broken.

Gel Cell Batteries don't offer the same power capacity as do the same physical size as AGM batteries. Gel cell batteries excel in slow discharge rates and slightly higher operating temperatures and with excellent deep cycle capability. Recharging these batteries must be done correctly or it will suffer a premature failure.


What are lead acid rechargeable batteries used for?


Lead acid batteries are widely used if surge current is critical, even if other designs could provide higher energy densities. Large-format lead acid designs are widely used in settings like hospitals, and in stand-alone power systems. Their surge current properties make them attractive for use in motor vehicles to provide the high current required by starter motors.


How do lead acid batteries work?


The oxygen in the active material (lead dioxide) reacts with the 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.


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Description Price Capacity Nominal Voltage Sub Range Dimensions Terminal Type Construction Designed for Cyclic Application Application Weight Flame Resistant Designed High Rate Application Eurobat Classification Operating Temperature Range Brand Range
RS Stock No. 537-5488
BrandRS PRO
£17.68
Each
Units
7Ah 12V - 151 x 65 x 93.5mm Faston F1 AGM Yes UPS 2.2kg - - 3 to 5 Years -20 → +60°C -
RS Stock No. 537-7305
BrandRS PRO
£33.31
Each
Units
12Ah 12V - 151 x 98 x 95mm Faston F1 AGM Yes UPS 3.5kg - - 3 to 5 Years -15 → +50°C -
RS Stock No. 686-7253
BrandRS PRO
£14.63
Each
Units
5Ah 12V - 90 x 70 x 101mm Faston F1 AGM Yes UPS 1.8kg - - 3 to 5 Years -20 → +60°C -
RS Stock No. 537-5444
BrandRS PRO
£11.97
Each
Units
1.2Ah 12V - 97 x 43 x 52mm Faston F1 AGM Yes UPS 570g - - 3 to 5 Years -20 → +60°C -
RS Stock No. 537-5422
BrandRS PRO
£11.05
Each
Units
4Ah 6V - 70 x 47 x 100mm Faston F1 AGM Yes UPS 740g - - 3 to 5 Years -20 → +60°C -
RS Stock No. 537-5494
BrandRS PRO
£58.53
Each
Units
18Ah 12V - 181.5 x 77 x 167.5mm T12 AGM Yes UPS 5.4kg - - 3 to 5 Years -20 → +60°C -
RS Stock No. 537-5450
BrandRS PRO
£13.08
Each
Units
2.3Ah 12V - 178 x 35 x 60mm Faston F1 AGM Yes UPS 970g - - 3 to 5 Years -20 → +60°C -
RS Stock No. 537-5472
BrandRS PRO
£25.00
Each
Units
3.2Ah 12V - 134 x 67 x 60.5mm Faston F1 AGM Yes UPS 1.4kg - - 3 to 5 Years -15 → +50°C -
RS Stock No. 537-5501
BrandRS PRO
£69.54
Each
Units
24Ah 12V - 166 x 175 x 125mm T12 AGM Yes UPS 7.2kg - - 3 to 5 Years -20 → +60°C -
RS Stock No. 727-0391
BrandRS PRO
£53.18
Each
Units
20Ah 12V - 181.5 x 77 x 167.5mm T12 AGM Yes UPS 5.8kg - - 3 to 5 Years -15 → +50°C -
RS Stock No. 537-5438
BrandRS PRO
£17.12
Each
Units
10Ah 6V - 151 x 51 x 94mm Faston F1 AGM Yes UPS 1.6kg - - 3 to 5 Years -20 → +60°C -
RS Stock No. 537-5517
BrandRS PRO
£100.99
Each
Units
38Ah 12V - 197 x 165 x 170mm T6 AGM Yes UPS 12.2kg - - 3 to 5 Years -20 → +60°C -
RS Stock No. 727-0401
BrandRS PRO
£301.99
Each
Units
120Ah 12V - 408 x 177 x 225mm T11 AGM Yes UPS 34kg - - 3 to 5 Years -15 → +50°C -
RS Stock No. 727-0388
BrandRS PRO
£9.04
Each
Units
1.2Ah 6V - 97 x 24 x 51.5mm Faston F1 AGM Yes UPS 290g - - 3 to 5 Years -15 → +50°C -
RS Stock No. 698-8091
BrandRS PRO
£17.93
Each
Units
4Ah 12V - 90 x 70 x 101mm Faston F1 AGM Yes UPS 1.5kg - - 3 to 5 Years -20 → +60°C -
RS Stock No. 727-0427
BrandRS PRO
£237.35
Each
Units
100Ah 12V - 330 x 173 x 212mm T11 AGM Yes Emergency Lighting 30.6kg - - 3 to 5 Years -15 → +50°C -
RS Stock No. 727-0439
BrandRS PRO
£199.98
Each
Units
75Ah 12V - 260 x 168 x 208mm T6 AGM Yes Emergency Lighting 22.3kg - - 3 to 5 Years -15 → +50°C -
RS Stock No. 537-5539
BrandRS PRO
£171.70
Each
Units
65Ah 12V - 348 x 167 x 178mm T6 AGM Yes UPS 19.2kg - - 3 to 5 Years -20 → +60°C -
RS Stock No. 727-0442
BrandRS PRO
£338.35
Each
Units
150Ah 12V - 485 x 170 x 238.5mm T11 AGM Yes Emergency Lighting 43.2kg - - 3 to 5 Years -15 → +50°C -
RS Stock No. 698-8082
BrandRS PRO
£17.16
Each
Units
2.9Ah 12V - 178 x 66 x 32mm Faston F1 AGM Yes UPS 1.1kg - - 3 to 5 Years -20 → +60°C -
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