The Milwaukee MX FUEL Backpack Concrete Vibrator provides consistent starts and the most reliable pours with the power to push up to 2-1/2 -inch heads, no gas headaches, consolidating up to 70 yds 3 per charge with a 1-1/2 -inch head and 7 ft. shaft even in the stiffest concrete. This results in a Backpack Concrete Vibrator that requires no regular maintenance, less noise and zero emissions for a safer workspace, indoors or outdoors. The battery-powered backpack vibrator is compatible with all MX FUEL REDLITHIUM batteries, giving you the hardest working and most reliable power for equipment. The MX FUEL Backpack Concrete Vibrator can accept whips up to 21 ft. L, without sacrificing power. The wireless remote gives you the ability to turn the machine on from up to 30 ft. away, for more freedom when using long whips. REDLINK PLUS Intelligence ensures optimal performance and provides overload protection to protect your machine and battery during the toughest applications.