Ryobi 18V NiCad Rechargeable Battery Rebuild Kit (Sub C 2.1A Full Size 1 5/8" Tall)
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
Amazon.com : 2 Packs 3.6Ah Ni-Mh 18 Volt P100 Battery and P117 Charger Compatible with Ryobi 18V Battery ABP1801 ABP1803 BPP1820 130224007 130224028 130255004 1322401 1323303 P102 P107 P108 : Tools & Home Improvement
P117 12V-18V MAX Charger Replacement for Ryobi Battery Charger Compatible for Ryobi ONE Lithium NiCad NiMh Battery P100 P102 - AliExpress