Milwaukee MX Fuel submersible pump (pump 4950 1210; kit MXF211-1XC) is a heavy, high-flow cordless dewatering unit with backpack carry, MX Fuel battery, remote (3s pairing) and Turtle/Rabbit/Auto modes; reviewer adapted the 2" outlet to 1.25" hose (24 ft) and reported auto on/off float protection and a 90"×90" hot tub drained in 5 minutes on high.