Panasonic VL20 Rechargeable Button Cell Lithium 3V - 20/30/50mAh - Panasonic VL2020-1VCE, This 20mAh rechargeable button cell from Panasonic is a vanadium pentoxide lithium battery equipped with solder tags.
For low current output use only, such as replacing the battery of a BMW ignition key.
Panasonic VL2020-1VCE 20mAh Rechargeable Button Cell Lithium 3V 1 pc(s)