ONE+ 18V Lithium-Ion 4.0 Ah Compact Battery (2-Pack) and Charger Kit with Free Cordless High Pressure Inflator. RYOBI introduces the 18V ONE+ Lithium-Ion 4.0 Ah Compact Battery (2-Pack) and Charger Kit with FREE Cordless High Pressure Inflator. This RYOBI 18V ONE+ Lithium-Ion 4.0 Ah Battery (2-Pack) and Charger Kit provides…