The M18 REDLITHIUM FORGE XC8.0 Battery Pack delivers HIGH OUTPUT 12.0 power in a smaller size, high-speed cooling for less downtime in high-demand applications, 35-minute supercharge to 80%, and the longest life vs REDLITHIUM batteries. REDLITHIUM FORGE are Milwaukee's most powerful, fastest charging, and longest-life batteries. The M18 REDLITHIUM FORGE XC8.0 delivers 8 amp hours of runtime with the same power as the M18 REDLITHIUM HIGH OUTPUT HD12.0, in a smaller size and lighter weight design. The M18 REDLITHIUM FORGE XC8.0 is COOL-CYCLE capable. COOL-CYCLE Active Cooling System provides high-speed cooling for less downtime. Patented ingress coating provides increased protection to maximize active cooling through an upgraded venting design. The high-speed cooling feature works with M18 chargers that have COOL-CYCLE capability.Our M18 Dual Bay Simultaneous Rapid Charger is capable of charging two batteries at once, over 3X faster than standard sequential chargers. The charger accepts all MILWAUKEE M18 batteries. This compact battery charger is equipped with 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. Charging batteries simultaneously at a rapid charge rate massively reduces downtime and maximizes productivity. Its compact size makes this an ideal charger to carry on and off the job, hang in a work trailer, or charge on the top shelf of a job box. Our M18 Dual Bay Simultaneous Rapid Charger is perfect for professionals who charge and swap battery packs throughout the day.