My Battery Supplier Replacement for FDK, CR1220 3v Rechargeable batteries. Works for: Laser Pointer Insulin Pumps, Heart Rate Monitor, toys, Watches, Cameras, Calculators, Car Security Alarm, Keyless Car Remotes, Organizers, Computer Equipment (memory backup battery) CMOS, and all other devices that requires this battery size. Equivalent to: CR1220, DL1220, ECR1220, BR1220, 280-208, DL1220B, BR1220-1W, CR1220-1W, KCR1220, LM1220, 5012LC, SB-T13, L04,