Ryobi P118 18V Dual Chemistry Lithium Ion / NiCad Battery Charger with 2 Genuine OEM P102 Compact Lithium Ion Batteries (Includes 1 x Charger and 2 x Batteries) - Amazon.com
P117 Lithium Ion Dual Chemistry Battery Charger for Ryobi One+ 18V Lithium-Ion NiCd NiMh Battery P100 P101 P102 P103 P104 P105 P107 P108 P118 with 2 USB Port - Walmart.com
Ryobi 18V Battery Not Charging - Fixing it to Charge Again - 1161 - YouTube