Product Details: 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.