Kastar 4-Pack LP-E4N 11.1V 4400mAh Fully Decoded Batteries + AC LCD Dual Fast Charger Compatible with Canon Mark III, Mark 3, EOS 1D Mark IV, Mark 4, EOS 1D C, EOS 1D X, EOS 1D X Mark II, Mark 2

Package contains four Kastar LP-E4N Lithium-Ion batteries (11.1V, 4400mAh) that are fully decoded — they can be charged with the original Canon charger and the camera will display the remaining battery life. Included Kastar LCD Dual Fast Charger accepts 110-240V worldwide input and can charge two batteries at once. The charger supports batteries with voltages from 6.8V - 16.8V of any capacity and features interchangeable plates to suit most digital camera batteries. Control MCU automatically identifies battery voltage, enables intelligent charging and prevents overcharge. The LCD reports charging status and battery capacity. Charging follows the CC/CV method with reliable, efficient performance and includes pre-charging and li-ion battery 0V activation to help extend battery life.