Technika CB-620 Camera Replacement Battery 12V 1800mAh

Technika C-5010 / C-6010 Series — 12V Ni-MH Replacement Battery (CB-620)

This is a 12V, 1800mAh Ni-MH replacement battery for the Technika C-5010, C-6000, C-6010, C-7000, and compatible models. It fits using OEM part references CB-620 and CB-812. The cell restores power to the camera body for image capture, LCD operation, and all onboard functions.

• C-5010 / C-6000 / C-6010 / C-7000 platform fit: These models share the same battery bay geometry, connector pin layout, and 12V supply rail, which is why a single cell covers the full range. The BMS in each body reads the same charge handshake from the CB-620 form factor.
• Bench tested on actual hardware: We cycled this cell through the camera's charge controller and monitored BMS acceptance, charge termination, and voltage delivery across LCD and shutter events. The cell held a stable output rail with no premature cutoff detected.
• First-install charge cycle on camera bodies: Run one full charge through the camera body's onboard charger before your first shoot. Technika's BMS maps the battery-remaining display to a charge curve it records during that initial cycle — skipping this step causes the indicator to read inaccurately from the start.

Camera showing dead battery indicator on a partially charged replacement cell

Ni-MH cells have a flatter discharge curve than lithium chemistries, and some camera firmware maps its battery indicator thresholds to a discharge curve logged during the first charge cycle. If the first charge was done externally — outside the camera body — the body has no reference curve, so it misreads the cell's actual state of charge. The indicator can show empty while the cell still has usable capacity. Fix this by charging the replacement fully inside the camera body, then allowing it to discharge through normal use once before trusting the indicator.

Battery percentage jumping erratically during a shoot

This happens when the camera's voltage-threshold map doesn't match the discharge profile of a fresh Ni-MH cell. New Ni-MH cells have a slightly higher resting voltage than a broken-in cell, which causes the firmware's percentage steps to skip or jump as the cell settles. The behaviour typically stabilises after two to three full charge-discharge cycles. If it persists past three cycles, check that resting voltage after a full charge reads at or above 12V before inserting the battery.