The NOCO Boost X GBX155 is a 4250A UltraSafe lithium jump starter for 12V batteries, rated for petrol engines up to 10.0L and diesel engines up to 8.0L. It is part of NOCO's Boost X range and suits drivers of larger vehicles who need a portable jump starter that also works as a 60W USB-C power bank and 500-lumen torch.\n\nThis listing is the GBX155. The Boost X range is also available as the NOCO Boost X GBX45 1250A.\n\nKey specifications\n\n--Peak starting current: 4250A\n\n--Engine rating: Up to 10.0L petrol, up to 8.0L diesel\n\n--Battery types: 12V lead-acid batteries\n\n--Internal battery: 99Wh lithium-ion\n\n--USB-C Power Delivery: 60W in and out\n\n--USB-A output: 5V 2.1A (10W max)\n\n--LED torch: 500 lumens with SOS and strobe modes\n\n--Protection: IP65 (with ports closed), spark-proof, reverse polarity protection\n\n--Size and weight: 175 x 305.6 x 69.1 mm, 2.64 kg\n\nNOCO Boost X GBX155 overview\n\nThe GBX155 delivers extreme power for the most demanding jump starts, usingy