Battery Chargers

A battery charger is a device designed to push electrical energy through a secondary cell or a battery to recharge it.

How does it work?

A typical rechargeable battery can be charged many times. First you have to make sure you have the right type of battery that allows for recharging. From here, you connect the battery to the charger unit. Once a current starts to flow, the electrodes that have depleted out of the batteries are recharged and the battery's energy is restored. It is important to cut off charging once maximum capacity is reached, or the batteries will have to expend the excess energy and will overheat, leading to risk of rupture, chemical leaks or sometimes even the explosion of the battery.

Different types of rechargeable batteries respond best to different types of charging, therefore being able to pick a charger suitable for one type of battery may not work well with another. In other words, we should not charge a mobile phone with a car battery charger, but neither should we charge NiMH batteries with a nicad charger.

Methods of Battery Charging:

  • Lead- and lithium-based chargers operate on constant current constant voltage (CC/CV).
  • Nickel-based batteries charge with constant current and the voltage is allowed to rise freely.
  • There are battery chargers available for standard sizes, for example, AA, AAA, C, D and 9V. There are also battery chargers available for larger lead-acid batteries.
  • Some battery chargers have slots for the smaller cells to be placed into for charging. These often fit straight into a plug socket for power. Other battery chargers come with crocodile clip connectors to connect to larger, lead-acid batteries.

Features and benefits

  • Cost effective: batteries can be reused multiple times, expanding their performance life
  • Eco-friendly for the environment as recharging batteries reduces the number going to landfill
  • Charge several chemistries including lithium-ion, NiCd, NiMH
  • Some will work in your car if they have an adapter, providing charging on the move
  • Fast charging times
  • Handy lights that change colour to indicate completion


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Description Price Battery Sizes Charged Number of Batteries Charged Chemistries Charged Number of Cells Charged Plug Type Batteries Included Model Number Car Lighter Adaptor Charging Time Battery Type Charged Dimensions Charge Current Input Voltage Maximum Output Power
RS Stock No. 536-489
BrandRS PRO
£16.82
Each
Units
9V, AA, AAA, C, D 6 NiCd, NiMH - UK No - No 13 → 27 (9V) h, 15 → 33 (AA) h, 26 → 116 (D) h, 26 → 52 (C) h, 3 → 13 (AAA) h - 198 x 105 x 52mm - - -
RS Stock No. 771-6276
BrandRS PRO
£105.18
Each
Units
- 1 Lead Acid - UK No - - - - - 14A 230V ac -
RS Stock No. 549-300
BrandRS PRO
£35.34
Each
Units
- 1 Lead Acid - EURO, UK No - - - - 120 x 61.6 x 37.4mm 2A 230V ac -
RS Stock No. 383-241
BrandRS PRO
£3.99
Each
Units
AA, AAA 4 NiCd, NiMH - UK No - No 10 → 15 (AA) h, 3.5 → 11 (AAA) h - 105 x 72 x 44mm - - -
RS Stock No. 549-261
BrandRS PRO
£70.69
Each
Units
- 1 Lead Acid - EU No - - - - 186 x 88 x 47.5mm 12A 115 V ac, 230 V ac -
RS Stock No. 800-3079
BrandRS PRO
£13.89
Each
Units
9V, AA, AAA 6 NiCd, NiMH - EURO, UK No - No 18.5h - 142 x 174 x 54mm - - -
RS Stock No. 767-4926
BrandRS PRO
£250.59
Each
Units
- 1 Lead Acid - UK No - - - - 315 x 295 x 410mm 33A 230V ac -
RS Stock No. 549-277
BrandRS PRO
£70.69
Each
Units
- 1 Lead Acid - UK No - - - - 186 x 88 x 47.5mm 7A 115 V ac, 230 V ac -
RS Stock No. 549-328
BrandRS PRO
£70.60
Each
Units
- 1 Lead Acid - EU No - - - - 186 x 88 x 47.5mm 10A 115 V ac, 230 V ac -
RS Stock No. 793-4329
BrandRS PRO
£39.86
Each
Units
Battery Pack - NiCd, NiMH 4 → 10 AUS, EURO, IEC, JPN, UK, USA - - - - - 51.5 x 34 x 87.5mm - 100 → 240V ac -
RS Stock No. 549-287
BrandRS PRO
£232.29
Each
Units
- 1 Lead Acid - UK No - - - - 405 x 186 x 76mm 25A 230V ac 600W
RS Stock No. 549-322
BrandRS PRO
£146.45
Each
Units
- 1 Lead Acid - EURO, UK No - - - - 235 x 186 x 76mm 10A 230V ac -
RS Stock No. 549-283
BrandRS PRO
£35.34
Each
Units
- 1 Lead Acid - EU No - - - - 120 x 61.6 x 37.4mm 2A 100 → 240V ac -
RS Stock No. 549-316
BrandRS PRO
£72.72
Each
Units
- 1 Lead Acid - EU/UK No - - - - 186 x 88 x 47.5mm 5A 115 V ac, 230 V ac -
RS Stock No. 793-4323
BrandRS PRO
£50.49
Each
Units
- 1 Lead Acid - EURO, JPN, UK, USA No - - - - 87.5 x 51.5 x 34mm 1A 100 → 240V ac -
RS Stock No. 851-7492
BrandRS PRO
£146.45
Each
Units
- 1 Lead Acid - UK No - - - - - 28A 230V -
RS Stock No. 549-334
BrandRS PRO
£65.64
Each
Units
- 1 Lead Acid - EU No - - - - 186 x 88 x 47.5mm 5A 115 V ac, 230 V ac -
RS Stock No. 793-4317
BrandRS PRO
£49.07
Each
Units
Battery Pack - Lithium-Ion 2 Worldwide - - - - - 51.5 x 34 x 87.5mm - 100 → 240V ac -
RS Stock No. 549-306
BrandRS PRO
£176.75
Each
Units
- 1 Lead Acid - EU No - - - - 275 x 186 x 76mm 25A 230V ac -
RS Stock No. 885-3681
BrandRS PRO
£56.55
Each
Units
- - Lead Acid, NiCd - - - - - - - 135 x 108.6 x 45mm 5A 95 → 165V ac -
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