Replace Your P100 ONE+ 18V 1.5m-Ah 1500mAh Ni-Cd Ryobi Batteries - Part #130224028 - YouTube
3.6Ah Ni-Mh Replacement Battery Compatible with Ryobi 18V Battery P100 Compatible with Ryobi 18 Volt Battery one Plus ABP1801 ABP1803 BPP1820 130224007 130224028 130255004 Cordless Power Tools - Walmart.com
Ryobi 18V NiCad Rechargeable Battery Rebuild Kit (Sub C 2.1A Full Size 1 5/8" Tall)