Where can I buy 1.2V 40mAh Ni-MH batteries?

cattkitt

I need one for a dead electronic timer.
Thank you.

John_Gray

Isn't this a standard AA alkaline battery?

cattkitt

No, sorry. It's a tiny button battery.

John_Gray

Does it have any reference number on it? Or has it been soldered so that this is invisible?

fwor

Is it tagged (i.e. does it have legs attached by which it is soldered to a circuit board)? If so, Farnell sell them - made by Varta - at £3.66 each.

nottseagull

The £ shops sell cards of various sized button cells.

cattkitt

No, sorry, not reference numbers. It has another line of writing on the green plastic, which says "CHARGE 4mA 14h"

It doesn't have legs. It is connected to the circuit board by two vaguely horse shaped prongs rising out of the board. It's VERY firmly held by these two prongs, and I'm not sure if it's soldered to these prongs or not.

cattkitt

nottseagull wrote: »

The £ shops sell cards of various sized button cells.

Thank you. I'll go and have a squint!

fwor

cattkitt wrote: »

It is connected to the circuit board by two vaguely horse shaped prongs rising out of the board. It's VERY firmly held by these two prongs, and I'm not sure if it's soldered to these prongs or not.

It's probably spot-welded to the prongs. If so these are the legs referred to above. Does it look similar to the right-hand one in the picture here:

http://uk.farnell.com/varta/v40h-s-slf/battery-nimh-pcb-mount-1-2v/dp/854591

If so, it's soldered in place. Not hard to replace if you're used to that sort of thing, but a pain if you're not.

The £ shop batteries will either be alkaline/silver oxide watch batteries, or Lithium coin cells, and won't be suitable.

cattkitt

Wow. That is it exactly. Thanks!

cattkitt

Being rechargeable batteries, does anyone know how I can recharge them?