NICKEL CADMIUM TYPE; BATTERY; 6550-20, 6538-1, 6539-6, 6540-1, 6545-6, 6546-6, 6547-1, 6547-22 USED ON EQUIPMENT PART NO; SCREWDRIVER USED ON POWER TOOL; CORDLESS USED ON POWER TOOL TYPE; VOLTAGE RATING 2.4 V