Kastar 4-Pack LP-E4 11.1V 4400mAh Lithium-ion Replacement Batteries for Canon EOS 1D C, EOS 1D X, EOS 1D X Mark II, Mark 2, EOS 1D Mark III, Mark 3, EOS 1Ds Mark III, Mark 3, EOS 1D Mark IV, Mark 4 Cameras

Extended Runtime: Kastar high-capacity replacement batteries give your Canon more shooting time between charges so you can stay focused on the shot. Specification: Battery Type: Lithium-ion; Battery Voltage: 11.1V; Battery Capacity: 4400mAh. Built-in Safety: The lithium-ion cells used meet UL1642 & CE safety standards and include a protection circuit to guard against over-charge, over-discharge, over-voltage, over-current, and over-heating. Better Value: Avoid frequent purchases of low-quality replacements — these batteries offer longer run time and protection features that help preserve cycle life while saving you time and money. Package Includes: 4-Pack Batteries