Clarke Heavy Duty Jumpstart 4000, 2200ampClarke international 2200amp Jumpstart Equipped with 'extra power' battery for easily starting bigger engines. Selected as a Best Buy by Which Caravan Magazine because of its feature packed specification. Ideal for easily starting petrol engines up to 6 litres and diesels up to 4 litres this unit has 2200amp peak power output and the 1m leads are operated by a heavy duty isolator FEATURES Integral work light ideal for roadside repairs or emergencies.