About this replacement
Canon E06 / E07 / E08 / E09 Series — 6V Ni-MH Replacement Battery (BP-711)
This is a 6V, 2100mAh Ni-MH replacement for Canon's BP-711 battery pack. It fits the Canon E06, E07, E08, and E09 camera series, along with over 125 additional compatible models. Cross-compatible OEM part numbers include BP-714, BP-726, BP-818, BP-E77, BP-E77K, BP-E718, BP-E722, and BP-E818.
- E-series platform compatibility: The E06 through E09 bodies share the same battery bay geometry, 6V voltage rail, and BP-series connector pinout. One cell works across all four bodies without modification.
- Bench tested on actual hardware: We ran this cell through the Canon BMS handshake on E-series bodies. The BMS accepted the cell on first charge cycle and reported capacity without triggering an incompatibility flag.
- First-cycle initialisation on E-series bodies: Insert the battery and run a full charge through the OEM Canon charger or the camera body itself before shooting. Some E-series BMS versions will not map battery-remaining percentage accurately until after this first in-body charge cycle completes.
Canon BMS rejecting a third-party cell on first install
Canon E-series bodies run an authentication check on insertion. A fresh replacement cell often sits at a partial state of charge from storage, which can cause the BMS to return a low-battery or unrecognised flag before any shooting begins. This is not a fault with the cell. Placing the battery in the OEM charger for a full charge cycle first, then inserting it into the body, clears the flag in most cases. After that single initialisation, the body treats the cell as a known, accepted source.
Battery percentage jumping erratically on the E-series display
The Canon E-series fuel gauge maps voltage thresholds from the original BP-711 discharge curve. Ni-MH cells from different production runs can have a slightly different voltage-drop profile across their capacity range, causing the displayed percentage to jump rather than step down smoothly. This is a gauge calibration issue, not a fault with the cell's actual capacity. Running two to three full charge-discharge cycles through the camera body recalibrates the threshold mapping and stabilises the readout.