This will help them ensure a quick service and that you receive the correct replacement. If your 4V, 18V, 24V, 40V, or 80V battery falls out of its warranty, Ryobi advises you to visit The Home Depot.
Never try to charge two Ryobi Li-Ion batteries in series or parallel (this means no putting any dual adapter in a 18v or 40v charger) as damage to the internal Battery Management System (BMS) or the ...