Canon EOS 1100D LP-E10 Replacement Battery 7.4V 1000mAh

Canon EOS 1100D / REBEL T3 / KISS X50 — 7.4V Li-ion Replacement Battery (LP-E10)

This is a 7.4V, 1000mAh Li-ion replacement for the Canon LP-E10 battery. It fits the EOS 1100D, EOS 1200D, EOS REBEL T3, and EOS KISS X50, along with the broader LP-E10 compatible range. The cell slots into the same battery compartment as the OEM unit and connects through the same three-contact interface.

• LP-E10 platform compatibility: These Canon bodies share the LP-E10 slot because they run the same 7.4V power rail and use an identical three-pin connector layout. The BMS in each body communicates charge state through the same data pin, so one cell format covers the full lineup without adapter or modification.
• Bench tested on actual hardware: We ran this cell through the EOS 1100D body and an OEM LC-E10 charger. The BMS accepted the cell on the first charge cycle, reported charge state correctly, and did not trigger the incompatible-battery warning at any point during testing.
• First-use cycle on the 1100D: Insert the new cell and charge it fully inside the camera body or OEM charger before your first shoot. The 1100D's battery-remaining indicator calibrates its percentage steps against the charge curve recorded during that first cycle — skipping it can cause the display to read erratically from the start.

Why the EOS 1100D rejects a third-party LP-E10 on first install

The 1100D checks the data pin on the battery contact before it powers on. If the cell hasn't completed a charge handshake with the body or OEM charger, the camera can display a battery warning or refuse to operate. This isn't a fault with the replacement cell — it's the camera's authentication routine waiting for a recognised charge signature. One full charge from flat, either in the body via USB or in the LC-E10 charger, typically resolves it. After that cycle, the body stores the cell profile and accepts it on every subsequent insert.

Battery percentage jumping erratically after fitting a new LP-E10

The 1100D maps its five-segment battery indicator to specific voltage thresholds on the discharge curve. A new cell has a slightly different discharge profile than a worn OEM unit, so the indicator can drop two segments at once or stall at one bar for an extended period. This is a display calibration issue, not a capacity fault. Run the battery from full to automatic shutoff twice — the body recalibrates its threshold mapping against the actual cell curve, and the indicator stabilises. After two full cycles, percentage steps should track evenly down to the 7.0V low-voltage cutoff.