Ryobi Battery Charger - How to Charge a Ryobi 18V Battery Pack
Ryobi defective 40v battery. Charger or battery issue? I notice there are 4 prongs/terminals on the battery itself and only 3 on the charging dock (see photo). Is there a prong/terminal missing
Ryobi RC18150 ONE+ 18v Cordless Super Fast Li-ion Battery Charger | Battery Chargers