Takes the Hilti 36v Li-ion Battery, see last picture for style of battery it takes. THE LITTLE LED LIGHT ON THE DRILL IS NOT WORKING, quite commonly they fail but does not effect anything else about the drill.
HILTI TE6-A36 4th Generation Cordless Rotary Hammer Drill 36v Li-ion SDS+ Chuck
HILTI TE6-A36 4th Gen Cordless Rotary Hammer Drill SDS+ ( 36v Li-ion ) 3 Mode