Enjoy extended periods of uninterrupted shooting from time-lapse photography to interviews. Simply replace the battery of your compatible DSLR with this DC Coupler for direct connection to the mains electricity supply when in prolonged use. Benefits Replaces your camera\'s battery for direct connection to the mains electricity supply Ideal for extended periods of shooting, scientific applications and time-lapse photography Requires compatible AC mains adapter which is not included For use with compatible cameras only, please check you have the right compatibility for your camera What\'s in the box DR-E19 DC Coupler Compatibility EOS-1D C* EOS-1D X Mark II* EOS-1D X* EOS-1Ds Mark III* EOS-1Ds Mark II* EOS-1Ds* EOS-1D Mark IV* AC-E19N EOS-1D X Mark III EOS R3