LP-E19 Canon EOS-1D Replacement Battery 10.8V 3350mAh Li-ion

Canon EOS-1D X Series — 10.8V Li-ion Replacement Battery (LP-E19)

This is a 10.8V, 3350mAh Li-ion replacement for the Canon LP-E19 battery pack. It fits the EOS-1D X, 1DX, 1D X Mark II, and related professional DSLR bodies. Same voltage and capacity as the original — nothing has been rounded or inflated.

• EOS-1D X platform compatibility: The 1D X series shares a common battery bay, connector pinout, and BMS handshake protocol across the 1DX, 1D X Mark II, and EOS-1D variants. One LP-E19 form factor covers all of them because Canon kept the power architecture consistent across this body generation.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a 1D X body. The BMS accepted the cell, reported charge status correctly, and the protection circuit tripped at the correct low-voltage threshold without dropping the body mid-shot.
• First-use charge cycle on 1D X bodies: Insert the cell and run a full charge through the Canon LC-E19 charger or the camera body itself before your first heavy shoot. The 1D X BMS maps its battery-remaining display against a full reference charge — skipping this step causes the indicator to jump or read incorrectly from the start.

Why the 1D X shot count drops under continuous AF and high-speed burst

Canon's rated shot count is measured under controlled conditions — single-shot AF, LCD off, no flash. The 1D X's phase-detection AF array, 20fps burst drive motor, and sensor readout all draw current simultaneously under real shooting conditions. That combined load pulls the cell down faster than the spec suggests. The battery isn't failing — the spec shot count was never the real-world number to begin with.

Battery percentage jumping erratically on the 1D X display after install

The 1D X plots battery percentage by mapping display voltage against a discharge curve it calibrated on the original cell. A new cell has a slightly different discharge profile, so the camera's threshold mapping reads the wrong percentage at mid-charge. This usually stabilises after one or two full charge-discharge cycles. If the jump persists past two cycles, charge the cell fully to 12.6V via the LC-E19 charger, then let the camera discharge it to cutoff in normal use — that resets the reference.