Ryobi 140185011 P117 One+ 18 Volt Dual Chemistry IntelliPort Lithium Ion and NiCad Battery Charger (Battery Not Included, Charger Only)
How To Fix Common Ryobi 40v Battery Problems - Essential Home and Garden
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
2) Ryobi 18.0v Defective Batteries and similar items