Portable Motorcycle Battery Doc Sport 1.25 Amp Charger - Battery Doc is the Ideal Portable Battery Charger. A 1.25 Amp charger for lead acid/gel cell 12-volt batteries, the Battery Doc is a state of the art electronic switching charger. Highly efficient, the charger will safely charge and maintain your battery at peak condition 24 hours a day, 365 days a year. Charges and maintains batteries from 5-200 A/hrs. Maintains batteries up to 400 Amps per hour. Can be left on your battery indefinitely without concern of overcharge. UL/CUL listed. Includes: 1.25 Amp charger with 6 foot output cable lead. 6 foot AC input cable lead. 3 color LED charge indicator. Dimensions: 4 inch x 2-1/4 inch x 1-1/2 inch H. 12 Volt, 1.25 Amp, 3 Stage.