GE CG-690 Replacement Battery 6V 4200mAh Ni-MH

GE CG-690 / CG-695 / CG-696 / CG-697 Series — 6V Ni-MH 4200mAh Replacement Battery

This is a 6V Ni-MH replacement battery rated at 4200mAh (25.2Wh) for the GE CG-690, CG-695, CG-696, and CG-697 digital cameras. It matches the original cell format and voltage rail these camera bodies require. When the original cell no longer holds a full charge, this unit restores the camera to full operational capacity.

• CG-690 to CG-697 compatibility: These four models share the same battery bay dimensions, 6V rail, and connector orientation. The BMS in each body reads the same charge termination signals, so one cell type covers the range without modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a CG-series body. The BMS accepted the cell without rejection flags, terminated charge correctly at full capacity, and reported battery status accurately on the display.
• First-install charge protocol for Ni-MH in camera bodies: Ni-MH cells shipped in partial charge state. Insert this battery and run one full charge cycle through the camera body or OEM charger before your first shoot. Some GE camera BMS systems need that initial in-body charge cycle to map the new cell's discharge curve and display battery level correctly.

Flash recycling slowing down mid-shoot on a fresh cell

The GE CG-series flash capacitor draws a sharp recharge current spike after each burst — higher than the camera's continuous draw during video or live view. A Ni-MH cell with even moderate capacity fade can't sustain that spike at pace, so recycling time stretches. If you notice recycling lag on a new cell, confirm the cell reached full charge before shooting. A cell that shipped at 40% state of charge and was never fully cycled will show this symptom early. Charge fully via OEM charger, then retest.

Battery percentage jumping erratically on the camera display

GE camera bodies map battery percentage to voltage thresholds calibrated for the original cell's discharge curve. A new Ni-MH cell has a flatter mid-range discharge curve than a worn original, so the body's indicator reads the voltage position differently and jumps between levels. This is not a fault with the cell — it's a calibration mismatch. Run one to two full charge-discharge cycles through the camera body and the indicator will stabilise as the BMS learns the new cell's curve. After conditioning, percentage display tracks consistently.