Remote Controlled RV Trailer Lights Brake Tester with Volt/Ammeter DeWalt XR 20V
DeWALT XR 20V Battery Dock. Included are two power options for the tester: the Dewalt tool battery is available if the RV battery is low or not installed. This Device can only use standard DeWalt batteries, not compatible with the “PowerStack” line.
Remote Controlled RV Trailer Lights Brake Tester with Volt/Ammeter Milwaukee M18
Milwaukee M18 Battery Dock. Included are two power options for powering the tester; the Milwaukee tool battery is an option if the RV battery is low or not installed. The Smart Battery dock will alert you to a low-power battery situation.