LP-E17 Canon EOS Kiss X8i Replacement Battery 7.4V 950mAh

Canon EOS Kiss X8i / EOS 750D / EOS 760D — 7.4V Li-ion Replacement Battery (LP-E17)

This is a 7.4V, 950mAh Li-ion replacement for the Canon LP-E17 battery pack. It fits the EOS Kiss X8i, EOS M3, EOS 750D, EOS 760D, and eleven additional Canon bodies that share the LP-E17 slot. Capacity matches the OEM spec at 950mAh (7.03Wh).

• LP-E17 platform compatibility: Canon standardised the LP-E17 cell across multiple APS-C and mirrorless bodies from the mid-2010s onward. These cameras share the same 7.4V rail, physical form factor, and BMS communication protocol — so one cell works across the entire lineup without modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on an EOS 750D body. The BMS accepted the cell, reported charge state correctly after one full charge cycle, and the protection circuit tripped at the correct low-voltage threshold without requiring a manual reset.
• First-use charge cycle on Kiss X8i bodies: Canon's BMS on these bodies calibrates the battery-remaining display during the first charge cycle from within the camera or OEM charger. Insert the new cell, charge it fully in the LC-E17 charger before your first shoot — skipping this step can cause the indicator to read inaccurately for the first few sessions.

Canon BMS rejecting the LP-E17 replacement on first install

Some Canon bodies in this lineup display a "battery communication error" or refuse to power on when a new third-party LP-E17 is installed cold. This is a BMS authentication check — the camera reads the cell's charge state and communication signal before committing to boot. The fix is straightforward: place the battery in the LC-E17 charger first, complete one full charge cycle, then install it in the camera body. That single cycle is usually enough for the camera to accept and track the cell correctly.

Battery percentage jumping erratically on the Kiss X8i display

After installing a new LP-E17 cell, some users see the battery indicator jump — for example, showing 80%, dropping to 55%, then recovering to 70% within a short period. This happens because the camera's voltage-threshold indicator was mapped to the original cell's discharge curve, and a new cell's curve doesn't align until the BMS has seen at least one full cycle. Run the battery down to the low-battery warning once, then charge it fully to 8.35V via the LC-E17 charger. The indicator typically stabilises after that first calibration cycle.