Panasonic ML1220 Rechargeable Lithium CMOS BIOS RTC Coin Cell Battery - 3V 17mAh
A good quality rechargeable ML1220 coin cell.
This is a direct replacement for the non-rechargeable CR1220 version, it is the same voltage and will not overpower or damage your device.
Actual measured dimensions (mm): D2.1 x L12.5
NOTE: You must use an appropriate charger for these 3V cells.
Shipped fast and secure from the UK (global shipping available).
If you have any questions at all, or if you don't see the battery you require, please ask.