About this replacement
Canon ES50 / ES55 / ES4000 Series — 7.4V Li-ion Replacement Battery (BP-911 / BP-915)
This is a 7.4V, 2200mAh Li-ion replacement battery for Canon ES-series camcorders. It fits the ES50, ES55, ES410V, ES4000, and 47 additional Canon models that share the BP-911 / BP-914 / BP-915 / BP-924 / BP-927 / BP-941 footprint. Same voltage, same connector, same physical dimensions as the factory cell.
- ES-series compatibility: These camcorder models share a common battery bay size and 7.4V power rail. The BP-91x and BP-94x cells all use the same connector and BMS communication protocol, which is why one replacement cell covers the full range.
- Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on a Canon ES-series body. The BMS handshake completed correctly, the charge indicator responded, and the protection circuit triggered at the correct low-voltage cutoff threshold.
- First-install charge cycle: On first use, charge this battery fully inside the Canon OEM charger or camera body before recording. Some Canon BMS systems require one complete in-body charge cycle before the battery-remaining display reads accurately — skipping this step causes erratic percentage readouts.
Canon ES camcorder battery indicator reading empty on a new cell
Canon ES-series camcorders map battery percentage against a stored discharge curve calibrated to the original BP-series cell. A brand-new replacement cell has a full state of charge, but the camera body has no reference data for it yet. Until the BMS completes one full charge-to-discharge cycle from inside the body, the indicator may read low or blank even with a charged battery. This is a calibration gap, not a fault in the cell.
Battery percentage jumping around mid-recording session
The Canon ES-series reads voltage at intervals and maps those readings to percentage steps. A replacement cell's discharge curve may not align exactly with Canon's factory thresholds, which causes the indicator to skip steps rather than count down evenly. This is most visible in the middle portion of the discharge where the voltage slope is flattest. Run two full charge-discharge cycles and the camera's tracking will settle closer to the actual charge state.