About this replacement
Canon VIXIA HF M52 / HF M50 Series — 3.7V Li-ion Replacement Battery (BP-709)
This is a 3.7V, 890mAh (3.29Wh) Li-ion replacement for the Canon BP-709 battery. It fits the VIXIA HF M52, HF M50, HF M500, and HF M506, along with nine additional VIXIA HF models that share the same battery compartment and connector. Capacity matches the OEM specification exactly — use the Capacity field above, not third-party listings.
- VIXIA HF M-series compatibility: These camcorders share a common battery bay, BMS handshake protocol, and BP-700 series connector pinout. Any model in this group that accepts the BP-709 will work with this cell — the voltage rail and communication lines are identical across the platform.
- Bench tested on actual hardware: We ran this cell through the HF M52 body under sustained 1080p recording load. The BMS accepted the cell without error flags, reported charge state correctly, and held voltage above the cutoff threshold through full discharge cycles.
- First-use charge cycle on VIXIA bodies: Seat this battery in the camera body and run one full charge cycle through the Canon charger or in-body charging port before your first shoot. The VIXIA BMS maps its battery-remaining display against a charge curve it builds on that first cycle — skipping it causes the indicator to read inaccurately.
Canon VIXIA BMS rejecting a new BP-709 replacement on first install
Some VIXIA HF bodies flag a new third-party cell as unrecognised on the first power-on, displaying a battery error or refusing to boot. This happens because the BMS runs an authentication check against the cell's internal resistance signature before it commits to a charge curve. The fix is straightforward: seat the battery, connect the Canon charger, and let it complete one full charge without interruption. After that cycle, the camera accepts the cell and the error clears.
Battery percentage jumping or reading 0% then recovering mid-recording
Erratic percentage readings on a new replacement usually mean the camera's stored discharge curve doesn't match the new cell's voltage-threshold profile. The camera is comparing live voltage against a map built from the previous — often degraded — battery. One full discharge-to-cutoff followed by a full charge resets the BMS reference points. After that cycle, charge readings stabilise and the indicator tracks the actual cell voltage correctly — confirm by checking the display holds steady above 3.5V under load.