In the event you need to put your M12 or M18 battery on the charger, could you just swap it for the other type? In short, M12 ...
If you've misplaced a couple of Milwaukee tool battery packs, specifically the M12 and M18 models ... battery packs and chargers. However, the hitch here is that only one series of Milwaukee ...
M18 and M12 Multi-Voltage Charger, (1) Shoulder Strap and (1) 3/8-in. NPTF Female Quick Connect Cone Poppet Coupler ...