ABSAAR 12V 20Amp (20A) Heavy Duty Leisure & Marine Battery Charger 180A Jump Start Booster. The Jump Start Booster means you can connect the charger to a low or flat battery when still in the car and providing the charger is plugged into the mains, select the Start Boost function which will give a 180 amp boost (similar to the output of a large 4x4 battery) to start the car without waiting for the battery to charge. Its the same principle as jump starting a car using another vehicle and jump leads but using the charger instead but it needs to be connected to be plugged into the mains to do this. Charger has only been used a few times and is in full working condition.Perfect for large high capacity batteries such as Truck, 4x4 or Marine. The unit has a couple of small cosmetic marks on the top which can be seen in the pictures but otherwise is as new. The item "ABSAAR 12V 20Amp (20A) Heavy Duty Leisure & Marine Battery Charger 180A Booster" is in sale since Monday, September 16, 2019. This item is in the category "Vehicle Parts & Accessories\Garage Equipment & Tools\Other Garage Equipment & Tools". The seller is "knoxyboy" and is located in Kilmarnock. This item can be shipped to United Kingdom.