The makita dhr241z 18v sds rotary hammer boasts a 22 minute charge time thanks to makita39s air cooled makstar optimum charging system because the battery is lithum ion it is 40 lighter weighing the same as a 12 volt ni mh battery packing more power into the same weight and giving you up to 430 longer run time this rotary hammer features a conveniently placed push button for forward and reverse functions and user comfort is catered for by the high comfort grips there is an led work