The M18 REDLITHIUM 18-Volt Lithium-Ion XC 5.0 Ah Extended Capacity Battery from Milwaukee delivers exceptional run time, power and longevity. It features superb pack construction, electronics and performance to furnish more work per charge and more work over the life of the pack. An advanced design protects the pack against harsh job site environments, routing water away from the electronics and out of the battery pack. The ingenious design also minimizes heat to extend run time and inhibits pack failures ...