Synergy Digital Power Tool Battery, Compatible with Ryobi P208B Power Tool, (Li-ion, 18V, 4500mAh) Ultra High Capacity, Replacement for Ryobi BPL-1815 Battery - Walmart.com
18V ONE+™ Compact Drill/Driver Kit - RYOBI Tools
Amazon.com: Ryobi P208 One+ 18V Lithium Ion Drill/Driver with 1/2 Inch Keyless Chuck (Batteries Not Included, Power Tool Only) : Tools & Home Improvement