Delivers up to 3x more runtime, 20% more power and 2x more life than standard lithium-ion batteries. The M12 REDLITHIUM XC 6.0 compact battery pack features superior pack construction, electronics and performance to deliver more work per charge and more work over the life of the pack. With MILWAUKEE durability built into each pack, this battery runs cooler and performs in climates below -18°C (0°F). The compact design fits in tight workspaces and helps reduce user fatigue. Managed by MILWAUKEE's exclusive REDLINK Intelligence, the battery features overload protection to prevent you from damaging your cordless power tools in heavy-duty situations, while the discharge protection prevents cell damage. The temperature management system and individual cell monitoring help maximize battery life. Upgrade to the M12 REDLITHIUM 3.0 compact battery pack to instantly increase the runtime and durability of your MILWAUKEE M12 cordless tools (all sold separately).