Score a pair of RYOBI ONE+ 4Ah batteries for just $79 (New low, save 50%) - 9to5Toys
One World Technologies Recalls Ryobi Cordless Tool Battery Pack Due to Fire and Burn Hazards | CPSC.gov
Power Tools Batteries for Ryobi 18V 4Ah Battery Replacement - China Power Tools Battery and Ryobi 18V 4Ah Battery Replacement price | Made-in-China.com
Ryobi Part # P197 - Ryobi One+ 18V 4.0 Ah Lithium-Ion Battery - Power Tool Batteries - Home Depot Pro