$45West Marine brand Heavy duty, easy to use; emergency jump starter for boats jet skis cars light trucks farm equipment small SUVs and RVs, almost any 12 V battery system. Instant 12 V DC power whenever and wherever it's needed. Ideal for farm or ranch/home,tailgate parties, beach picnic,campsite,wilderness, emergency repair and more. Built in heavy duty industrial grade nickel clamps on jumper cables. LED worklight for dark locations. Charges appliances and the accessories such as cell phones, fluorescent light, depth finder, radio, camcorder, VCR, spotlight, electric motor, bilge pump, electric cooler, car vacuum. No maintenance required- simply recharge as needed.