Enjoy uninterrupted creativity for shooting in a studio or time-lapse video recordings. The AC-E19 Adapter replaces your cameras battery for direct connection to the mains electricity supply, when using the Canon DR-E19 DC coupler. Benefits Ideal for extended periods of shooting, scientific applications and time-lapse photography Replaces your camera\'s battery for direct connection to the mains electricity supply Requires DC Coupler DR-E19 For use with compatible cameras only, please check you have the right compatibility for your camera What\'s in the box AC Adapter AC-E19 Power Cable Compatibility EOS-1D X Mark III EOS-1D X Mark II* EOS-1D X* EOS-1D Mark IV* DR-E19 EOS-1D C* EOS-1Ds Mark III* EOS-1Ds Mark II* EOS-1Ds* EOS R3