Bauer BA-610 Replacement Battery 6V 4200mAh Ni-MH

Bauer BA-610 / BA-611 Series — 6V Ni-MH Replacement Battery

This is a 6V, 4200mAh (25.2Wh) Ni-MH replacement battery for Bauer cameras including the BA-610, BA-611, C-51, and C-61 among others. It matches the original cell's voltage and chemistry, so the camera body and charger treat it as a standard cell. Capacity is sourced from the product specification — not estimated from web data.

• BA-610 / BA-611 / C-51 / C-61 platform fit: These Bauer models share a common 6V battery compartment and connector format. The BMS in each body reads voltage at the same rail, so one cell spec covers the group without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a camera body. The BMS accepted the cell, reported charge state, and held voltage through full draw without tripping a fault cutoff.
• First-use charge cycle on camera bodies: Run the first full charge directly inside the camera body rather than a standalone charger. Some Bauer BMS firmware only maps the battery-remaining display to a new cell after it completes one charge cycle from within the body itself.

Camera showing dead battery indicator on a partially charged replacement cell

Ni-MH cells have a flatter discharge curve than the lithium cells used in many modern cameras. A Bauer body calibrated for a different discharge profile may read the new cell as empty when it still holds usable charge. The fix is to complete one full charge-discharge cycle inside the camera body so the BMS recalibrates its voltage-to-percentage mapping. After that cycle, the indicator should track the actual charge state accurately.

Battery percentage jumping erratically during a shoot

Erratic percentage readouts happen when the camera's indicator threshold table doesn't match the new cell's discharge curve. At certain voltage steps, the body miscounts remaining capacity and the display skips or drops suddenly. This is a calibration issue, not a fault with the cell. Perform two full charge-discharge cycles — charge to full, shoot until the body shuts down from low voltage, then recharge — and the display will stabilise.