Description
These are four JCB Recharge AA cells, each a nickel metal hydride rechargeable rated at 1200mAh and 1.2V. The IEC code for an AA cell of this chemistry is HR6, so that is the code to match if you are replacing cells one for one. The retail pack states that they arrive charged and ready to use, and that each cell will take up to 500 charges. A rechargeable AA is bought to be refilled rather than replaced, and the 1200mAh figure describes how much charge one cell holds between visits to the charger.
AA is the size that sits behind most of the small electrics in a house: remote controls, wall clocks, wireless keyboards and mice, digital thermometers, children's toys, radios and hand torches. Rechargeable cells earn their keep fastest in whatever you feed batteries to most often, so a game controller or a toy that never stops is a better home for them than a clock that runs for two years on one set. Keeping a charged spare set in a drawer means the toy goes back into service in minutes rather than waiting on a shopping trip.
A NiMH cell has a nominal 1.2V against the 1.5V of an alkaline, and it holds that voltage steadily through most of its run rather than sliding down gradually, so plenty of devices run happily on it while a few voltage-fussy ones will not. Charge them in a charger built for NiMH cells; a unit intended only for alkalines is not suitable. One unit of this listing is a single pack of four cells, and the minimum order is 10 packs, which is 40 cells in total. JCB batteries also run through our AAA, AAAA, 9V, D and coin cell sizes if you want to stock a drawer more widely.
Specification
| Size |
AA |
| Chemistry |
Nickel metal hydride (NiMH), rechargeable |
| Voltage |
1.2V |
| Codes |
HR6 |
| Pack quantity |
4 cells |
| Sold as |
One pack of 4 cells |
| Minimum order |
10, sold in multiples of 10 |
Frequently Asked
Do these arrive ready to use, or do I have to charge them first?
The pack states that the cells are charged and ready to use, so they can go straight into a device on opening.
Will a 1.2V rechargeable work in something designed for 1.5V alkaline cells?
Most AA devices run happily on 1.2V NiMH cells because the voltage stays steady through the run. A small number of voltage-sensitive devices will not, so check the manufacturer's guidance.
What sort of charger do these need?
Use a charger designed for NiMH AA cells. A unit intended only for single-use alkalines is not suitable for recharging these.
How many times can each cell be recharged?
The pack states up to 500 charges per cell. Real figures depend on how hard the device works the cell and how often it is topped up.
How many cells do I receive, and what is the minimum I can order?
Each pack holds four AA cells. The minimum order is 10 packs, sold in multiples of 10, which works out at 40 cells.
What does the 1200mAh figure actually tell me?
It is the charge one cell holds, so a higher figure means longer between charges in the same device rather than more power.