DuraVolt Fifth Wheel & Travel Trailer (Class B&C RV) magnetic battery maintainer 12 Volt 8.3 Watt - No experience Plug & Play Design. Dimensions 11.8" L x 10.0" W x 1/4" Thick. 10' cable. NO EXPERIENCE Plug & Play design - Free Adapters Included - Free Tech Support. SUPER MAGNETIC - Semi-Flexible that will mount to any metal surface -integrated Neodymium Magnets. Voltage Regulator (Controller) is NOT needed for 12V batteries. Low-profile & light weight . 11.8" L x 10.0" W x 1/4" Thick. 10' cable. Contact us for Senior or US Military Discount Codes. 100% Satisfaction Guaranteed.