8 Best Electric Trailer Dollies 2025 - Budget, Heavy, RV, Robotic & Big Tires! Links to the best Electric Trailer Dollies are listed down below: 8. Trailer Valet 5X - 7.

It can be used indoors as well as outside. Batteries power a heavy-duty, 36-volt motor to move the compact dolly and operate the hydraulic actuator to lift tongues weighing from 5,000 to 15,000 lbs.