High Capacity 4.0A Compatible with Milwaukee M18 XC RED LITHIUM 18-Volt Lithium-ion Cordless Tool Battery **AbleGrid Trademarked** We have the brand "ABLEGRID"! RED LITHIUM advantage performance: Up to 40% More Run-Time, 20% More Speed, 20% More Torque 4.0 Amp hour - 72 Watt hour battery; Battery fuel gauge displays remaining run-time Durability: Operates Down to 0F, Runs 20% Cooler, Up to 50% More Recharges Equivalent run-time with 40% less weight than a "compact" 18V NiCd battery; Lithium-ion battery delivers long life and run time with fade-free power