The newest Milwaukee 18V 5.0Ah Lithium-Ion Battery works on the M18 Cordless Tool System and has 2.0 Amp hours of run-time. This battery powers over 40 Milwaukee M18 cordlesstools, and provides up to 2 times more run-time, 20% more power and 2 times more recharges than a standard Lithium-Ion battery. REDLITHIUM also delivers best-in-class performance in extreme job-site conditions. With Milwaukee durability built into each pack, this battery operates cooler and performs in climates below 0°F/-18°C with fade-free power. 2-pack batteries only, no chargers included.