Battery type: Li-Ion - no memory-effect Capacity: 3350 mAh Voltage: 11.1 V Energy: 37.2 Wh Number of cells: 3 Weight: 173 g Compatible with the following device models: Canon 550EX Canon 580EX Canon 540EZ Canon 580EX-II Canon 1D Mark 3 Canon 1D Mark 4 Canon 1DS Mark 3 Canon 1DX Canon MR-14EX Canon MT-24EX Canon EOS 1DX Mark 2 Canon EOS 1D Mark III Canon EOS 1D Mark IV Canon EOS 1Ds Mark III Canon EOS 1D X To ensure compatibility, please check to see whether the battery you are currently using is listed below.
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