Milwaukee 48-59-1802 M18 18V Li-Ion Dual Bay Simultaneous Rapid Charger The M18 Dual Bay Simultaneous Rapid Charger has the capacity to charge two battery packs (not included) at the same time, over three times faster than standard sequential chargers. All M18 batteries can be used with this charger. Equipped with REDLINK Intelligence, this charger communicates directly with M18 batteries to monitor cell voltage, temperature, and charge status to provide the best combination of charge duration and pack lifespan. By charging batteries simultaneously at a rapid charge rate, it drastically reduces downtime and maximizes productivity. Its compact size makes it 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. The M18 Dual Bay Simultaneous Rapid Charger has the capacity to charge two battery packs (not included) at the same time, over three times faster than standard sequential chargers. All M18 batteries can be used with this charger. Equipped with REDLINK Intelligence, this charger communicates directly with M18 batteries to monitor cell voltage, temperature, and charge status to provide the best combination of charge duration and pack lifespan. By charging batteries simultaneously at a rapid charge rate, it drastically reduces downtime and maximizes productivity. Its compact size makes it 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. integration by