The Canon LP-E4 Rechargeable Lithium-ion Battery, has a capacity of 2300 mAh, so it is possible to shoot up to 2200 shots at normal temperatures on a single battery charge. The battery is also more compact and lighter in weight than previous battery models.

The LP-E4 Battery also communicates with the EOS-1D Mark III, EOS-1Ds Mark III & 1D Mark IV so that you can always check the remaining capacity (marks in six levels and percentage in 1% increments), shutter count and recharge performance (3 levels) on the camera's power source info screen.