Metabo HPT DH3628DDM 36V MultiVolt Brushless SDS Plus 1 1 8" D Handle Rotary Hammer 1617EVSPK The SubSurface Instruments LD 12 detector Choose Model:100Ω Twisted Pair Plug In The SubSurface Instruments LD 12 detector uses six AA alkaline batteries that gives an operating time of 14 to 28 hours depending on the backlight usage Using only original HP 21XL (CH569AN) black cartridges It accepts any MultiVolt battery for extreme power and runtime and can also accept the unique AC Adapter (ET36A) to plug in for all day runtime The 36V MultiVolt Brushless SDS Plus 1 1 8" Rotary Hammer (DH3628DD) offers corded performance with the convenience and versatility of a cordless tool