Provides RVs, boats, and vehicles of all types with a charge boost while not requiring a 120V AC power supply or host vehicle. Supplies up to 50 hours of DC power for use with DC appliances. It�s the all-around answer for emergency DC power and charging. Includes a 260 PSI air compressor with inflation hose for use with tires, air beds and pool toys. Features 900A peak, 40A boost starting power, DC-DC power cord, heavy duty 400A booster clamps, emergency signal light, DC charging LED emergency work light, battery condition meter, 12V DC cigarette lighter socket, 120V AC adapter/charger all in a molded high impact case.