The TeraPump TRFA01 is world's first battery powered fuel transfer pump with auto-stop and overflow protection. The TRFA01 eliminates the lifting of large, heavy, gas cans and spilling wasted fuel. Our exclusive design makes transferring fuel to cars, trucks, off road vehicles, boats, mowers and more, painless and hassle free. The built-in advanced auto-stop feature automatically stops when the transfer process is complete so you just sit back and watch it work. 3 included adapters allow the pump to fit 98% of North American fuel cans and 4 AA batteries (not included) pump up to 2.4 GPM for a quick and easy transfer.