BP-412 Canon DM-MV3 Replacement Battery 7.4V 1500mAh

Canon DM-MV3 Series — 7.4V Li-ion Replacement Battery (BP-412)

The BP-412 is a 7.4V, 1500mAh Li-ion cell that powers Canon's DM-MV3 family of compact digital camcorders. This listing covers the DM-MV3, DM-MV3i, DM-MV3iMC, DM-MV3MC, and over 21 additional compatible models. Capacity and voltage match the OEM specification exactly.

• DM-MV3 family compatibility: Canon built the entire DM-MV3 line around the same 7.4V battery rail and BP-series connector footprint. The BMS handshake and physical latch are shared across all variants, so one cell fits the full range without modification.
• Bench tested on actual hardware: We ran this cell through the Canon charge cycle on a DM-MV3 body. The BMS accepted the cell on the first charge pass, current draw held steady across the recording and playback load cycle, and the protection circuit tripped correctly at the low-voltage cutoff threshold.
• First-use charge cycle on Canon camcorders: Insert the cell and run a full charge inside the camera body or Canon OEM charger before recording. Canon's battery-remaining indicator maps to a discharge curve it learns on the first cycle — skipping this step can cause erratic percentage readings during shoots.

Canon BMS rejecting the BP-412 on first install

Some DM-MV3 bodies display a battery error or refuse to power on when a new third-party cell is installed cold. This happens because the Canon BMS runs a brief authentication and voltage-range check on first contact. A cell that ships slightly below the nominal resting voltage can fall outside the acceptance window. Plug the camera into the OEM charger for a full charge cycle first — once the BMS has completed a charge pass, it registers the cell and the error clears on next power-on.

Battery percentage jumping erratically during recording

The DM-MV3 maps its battery indicator to Canon's original BP-412 discharge curve. A new replacement cell may have a slightly different mid-range voltage slope, causing the indicator to skip from 80% to 40% without warning. This is a calibration issue in the camera's fuel-gauge logic, not a cell fault. Run two full charge-to-discharge cycles inside the camera body — the indicator stabilises once the BMS has enough data to remap the threshold at each voltage step down to 3.0V per cell.