I have 12 boxes 2 for 150$ 3 for 210$ About This Product The Milwaukee M18 Dual Bay Simultaneous Rapid Charger is capable of allowing users to charge 2 batteries at the same time, over 3X faster than standard sequential chargers. Equipped with REDLINK Intelligence, this battery charger communicates directly with all M18 batteries to monitor cell voltage, temperature and charge status to deliver the best combination of charge duration and battery lifespan. Charging batteries simultaneously at a Rapid Charge rate massively reduces downtime and maximizes productivity. The M18 Dual Bay Simultaneous Rapid Charger is perfect for professional users who charge and swap battery packs throughout the day. Its compact size and integrated hang holes make 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. Charges 2-packs simultaneously, over 3X faster than standard sequential chargers REDLINK intelligence: optimizes charge rates based on the battery type and temperature to minimize charge duration and maximize battery lifespan Internal fan maximizes charger performance 80% charge indicator: the charger slowly flashes green when the battery reaches 80% state of charge Integrated hang holes for wall mounting Two M18 ports Power source: AC