Compact, yet powerful, the Clarke JSM400 is an amazingly small and lightweight portable lithium-polymer power bank with inbuilt torch which easily fits in a pocket, weighing only 1.37kg (without leads). It will jump start a car with a flat battery, making it perfect for emergency situations. In addition it provides USB 5V device charging for mobile phones, tablets, cameras etc. An ideal device to keep in your vehicle glove compartment. The Clarke JSM400 Jumpstarter is supplied with a zip fastening bag, AC battery charger, smart charging cable, switch cable, 3 way USb cable, car charger adapter and 8x notebook adaptors while also including a 12 Month / 1 Year Manufacturers Warranty. Can be used approx. 15 times on a single charge (depends on age and condition of battery). Vehicle jumpstart output: Starting current 400A, Peak current 800A. 21Ah Lithium Polymer batteries with very low charge cycle requiring only approx 9 hour monthly recharge if not used. Starts petrol engines up to 6 litres and diesel engines up to 4 litres. Powerful pair of LED lights with light, flash and SOS modes. 12V vehicle jumpstart output with LED connection status smart lead. 5V USB output with 4-way device adaptor cable; including iPhone Lightning, USB C and Micro USB outputs to suit most mobile phone connectors. Includes vehicle aux power outlet (cigarette lighter) and mains chargers. Very compact and lightweight: 220 x 90 x 30mm.