Akkupack für BILTEMA 17-053 / Makita 6722D - 4,8 Volt Ni-MH zum Selbs
My old Playstation controller battery was dead and i didnt want to buy a new one, so i found a old nokia battery and soldered it on. with a bit of work
DVB18DWL Adapter Converter Use Devon 20V Li-Ion Battery On De Walt 18V 20V Lithium Electric Power Tools - AliExpress