2 in 1 : Starter & Power Supply Discharged battery : GYSPACK 400 instantaneously starts cars, Camper vans, vans, petrol or diesel (starting current 480A/1250A at peak) Compact and light (7kg), truly portable. Internal battery tester function; indicates the state of charge with 3 LEDS for an optimal use. The powerful integrated 18 Ah battery turns the GYSPACK 400 into a very useful portable 12V power supply for many electrical devices: TV?s, light, laptops, etc.. Automatic charger 230V /12V Floating: to charge the internal battery unsupervised. - Charge the battery up to 100%, maximising its life and efficiency. - Can be left permanently to the main (Gyspack has to be charged after each operation) . Integrated tester to check the level of charge of the internal battery.