Description
These are AA zinc cells from JCB, supplied four to a blister pack. Each one is a standard 1.5V AA, and the pack prints the three codes you might see quoted on a device or in a manual: R6, HP7 and UM3. All three name the same cell, so if your remote or clock asks for any one of them, this is the battery it wants. Zinc is the older of the two everyday AA chemistries, and what you are buying is a plain, inexpensive cell for the many small things around a house that draw very little current.
Zinc cells suit low drain work. Wall and mantel clocks, television and set top box remotes, a doorbell push, kitchen scales, a portable radio and a child's simple noisy toy all sip current over weeks or months, and a zinc cell is well matched to that. The pack is clear about where they do not belong, and so are we: it states they are not suitable for digital cameras or motorised devices. Anything with a motor, a flash or a heating element pulls hard, and a zinc cell will sag under that load long before it is actually empty. For those jobs, reach for an alkaline or a rechargeable cell instead.
Change all four cells at once rather than swapping one, and avoid mixing a fresh cell with a part used one, or zinc with alkaline, in the same compartment; the weakest cell in a series set holds the others back. Keep spares on their card in a dry cupboard at normal room temperature, and lift the cells out of anything you are storing away for a season. We sell these by the pack of four, with a minimum order of ten packs, so forty cells in total: a sensible quantity for an office drawer, a workshop, a village hall, or a landlord kitting out several properties.
Specification
| Size |
AA |
| Chemistry |
Zinc |
| Voltage |
1.5V (as printed on the pack) |
| Codes |
R6 / HP7 / UM3 (as printed on the pack) |
| Pack quantity |
4 cells |
| Sold as |
One card of 4 cells |
| Minimum order |
10, sold in multiples of 10 |
Frequently Asked
What is the difference between these and alkaline AA batteries?
Zinc cells cost less and work well in low drain items, while alkaline cells hold up better in anything that pulls a heavy current.
Are R6, HP7 and UM3 all the same battery?
Yes. All three codes are printed on this pack and name the same AA cell, so a device asking for any of them takes these.
Can I use them in a digital camera or a motorised toy?
No. The pack states they are not suitable for digital cameras or motorised devices, because those draw more current than a zinc cell gives comfortably.
How many batteries will I actually receive?
One unit is a card of four cells. The minimum order is ten units, sold in multiples of ten, which works out at forty cells.
Can these cells be recharged?
Nothing on the pack gives any charging information, and zinc cells of this kind are single use. Buy cells sold as rechargeable if you need to recharge.
How should I store spare cells?
Leave them on the card somewhere dry at normal room temperature, and take cells out of any device you are putting away for months.