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
Amazon.com: RYOBI RY40620 24 in. 40-Volt Lithium-Ion Cordless Hedge Trimmer with 2 Ah Battery and Charger Included