5S 5-cell 15A lithium-ion battery 18650 lithium battery charger charging protection board 18.5V 21V battery

From screwdrivers to hedge trimmers, many cordless tools run on lithium-ion (Li-Ion), nickel cadmium (ni-Cd) or even NiMH batteries. Your charger needs to match your power tool battery in terms of voltage (12, 14.4 or 18 volts) and capacity (1.5 or 3 Ah rating). Read on to find the right power tool battery charger!