Miwaukee 48-59-1852PD M18 Lithium-ion 5AH XC 2 Pack With Dual Bay Charger Kit The Milwaukee M18 lithium-ion 5AH XC 2 Pack + Dual Bay Charger Kit charges two batteries at once, over 3X faster than standard sequential chargers. The charger accepts all Milwaukee M18 batteries. This compact battery charger features Redlink Intelligence that communicates directly with M18 batteries to monitor cell voltage, temperature, and charge status to deliver the best combination of charge duration and pack lifespan. The M18 lithium-ion XC5.0 battery delivers up to 2.5X more runtime, 20% more power, and 2X more recharges than standard lithium-ion battery packs. The lithium-ion batteries feature superior pack construction, electronics, and performance, providing more work per charge and more work over pack life.Features:Capable of charging up to 2 battery packs at the same time at a Rapid Charge speedCharges 2 packs simultaneously, over 3X faster than standard sequential chargersInternal fan maximizes charger performanceIntegrated hang holes for wall mounting80% charge indicator: the charger slowly flashes green when the battery reaches 80% state of chargeRedlink Intelligence: Optimizes charge rates based on the battery type and temperature to minimize charge duration and maximize battery lifespanOn-board fuel gauge: Displays remaining runtimeAll-weather performance: Delivers fade-free power in extreme jobsite conditionsPackage Includes:(1) Milwaukee M18 Dual Bay Simultaneous Rapid Charger (2) Milwaukee M18 Lithium-ion XC 5.0 Extended Capacity Battery Pack