GE CG-690 Replacement Battery 6V 2100mAh Ni-MH

GE CG-690 / CG-695 / CG-696 / CG-697 Series — 6V Ni-MH 2100mAh Replacement Battery

This is a 6V Ni-MH replacement battery rated at 2100mAh (12.6Wh) for GE compact digital cameras. It fits the CG-690, CG-695, CG-696, and CG-697 series bodies, along with additional compatible models. When original cells no longer hold a charge or sourcing OEM packs becomes impossible, this cell restores full camera operation.

• CG-690 series compatibility: These camera bodies share the same battery bay dimensions, 6V voltage rail, and connector orientation. The BMS on each body reads cell voltage within the same acceptance window, so one cell format serves the entire platform without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on camera-class load profiles. The BMS accepted the cell without rejection flags, and discharge curves stayed within the flat voltage plateau expected of Ni-MH chemistry through the bulk of the cycle.
• First-cycle acceptance on Ni-MH camera bodies: Run the first full charge through the OEM charger or camera body before shooting. Some GE bodies in this series map battery-remaining indicators to a discharge curve baseline established on the first cycle — skipping this step causes the indicator to read inaccurately for several cycles after.

Battery percentage display jumping on the CG-690 after fitting a new cell

Ni-MH cells have a flatter discharge curve than lithium-based chemistry. The CG-690's battery indicator was calibrated to a specific cell aging profile — a fresh cell with full capacity discharges differently than the worn OEM cell the camera body last learned from. The indicator pulls from a voltage-threshold map, so as the new cell discharges through its flat plateau, the reading can jump or stall at fixed percentages. Running two to three full charge-discharge cycles through the camera body recalibrates the threshold mapping to the new cell's actual curve.

Flash recycling slowing down or failing to fire after several shots

The flash capacitor recharge draws a sharp current spike from the battery after each shot. On a Ni-MH cell approaching the lower end of its discharge, internal resistance rises and the cell can't supply that spike fast enough to keep pace with rapid shooting. You'll notice flash recycle time increasing noticeably before the camera flags any low-battery warning. If flash output drops mid-shoot, stop and charge the cell — don't run it further down. Recharge before the cell drops below 5.4V under load to avoid the BMS entering a recovery state.