SNAP ON Impact Wrench 14.4V CORDLESS Battery 3/8 Drive CTC620 Charger CTB4147

Used SNAP ON Impact Wrench 14.4V CORDLESS 3/8 Drive - works good Unsure of part number on the impact wrench. It begins with a 7, but it has faded with use Plus charger CTC620 Plus 2 batteries CTB4147 - the batteries need replaced and barely have any life left.