Cameron & Co DS-CS-CTR751SL cell phone battery 3.7V 1000mAh Li-ion Black

Casio-Compatible Replacement Battery

This 3.7 V 1000 mAh lithium-ion cell replaces the original BTR731B and BTR751B packs used in Casio C731, C751, GzOne Rock, GzoneE and Ravine handsets. It restores talk and standby time for owners of those specific models. The black finish matches the factory appearance. Buyers needing a different voltage, capacity or form factor will not be served by this unit.

Direct Drop-In Fit

The pack measures 44.60 x 38.00 x 6.64 mm and slides into the existing battery compartment without adapters or case modification. No external charger or special tool is required; the phone’s own charging circuit manages the cell. Builders integrating the battery into a custom enclosure must provide their own contacts and protection circuitry.

Steady Output Under Load

Rated at 3.70 Wh, the lithium-ion chemistry delivers a stable voltage curve during extended calls or GPS use rather than a brief peak followed by rapid sag. Self-discharge is low when the handset sits idle for days. The cell is not designed for high-drain applications such as portable speakers or RC gear that demand sustained currents above its rated capacity.