New Lithium 18V battery for Ridgid R840087 R840083,R840085,R840086 Series, compatible with Ridgid 18V Lithium-ion Cordless Products. Must be charged with Lithium Ion battery charger. A grade Lithiuim battery cells, no memory effect, built-in microchip prevents overcharging. Package includes: 2 Batteries. 30 day money back guarantee, 12 month warranty, 24*7 customer service.