Auto-Stop Sensor for Safe, Clean Refueling This electric fuel transfer pump features an intelligent auto-stop nozzle that stops the flow when the tank is full preventing spills, leaks, and overflows. Perfect for safe, clean fueling of cars, lawn mowers, tractors, motorcycles, and even yachts. Fast 3.2 GPM Flow Rate Save Time Everywhere With a powerful transfer rate of 3.2 gallons per minute, this gasoline transfer pump gets the job done quickly whether you're fueling a lawn mower, generator, or equipment so you can get back to what matters sooner. Battery & USB Powered Flexibility Designed for maximum convenience use 4 AA batteries (recommended) for everyday portability, or 2 AA batteries in emergencies. No outlet nearby? Simply connect the included USB cable to a power bank, car charger, or wall adapter for continuous use. Universal Fit with Extra-Long Hose Comes with 4 adapters (2.0 , 2.1 , 2.75 , 3.75 ) to fit most North American fuel cans.