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.BenefitsReplaces your camera's battery for direct connection to the mains electricity supply Ideal for extended periods of shooting, scientific applications and time-lapse photographyRequires compatible AC mains adapter which is not includedFor use with compatible cameras only, please check you have the right