Ryobi P197 Battery ONE + (PLUS) Compatible Replaces P108 Rechargeable Lithium Ion 18 v Volt 4.0 Ah / 72 Wh UL Listed Faster Recharge Single Battery with Fuel Gage - Amazon.com
RYOBI CANADA 18V HIGH PERFORMANCE Starter Kit with 4.0 Ah Battery and Charger 33287213665 | eBay
18V ONE+™ LITHIUM+™HP 6.0Ah High Capacity Battery... - RYOBI Tools
One World Technologies Recalls Ryobi Cordless Tool Battery Pack Due to Fire and Burn Hazards | CPSC.gov