The NOCO Boost X GBX155 is a 4,250-amp lithium jump starter built for 12-volt batteries in vehicles up to 10.0-liter gasoline and 8.0-liter diesel engines. It stands out for its USB-C Power Delivery, which recharges the unit fully in about 2.7 hours and doubles as a 60-watt power bank for phones, tablets and laptops. UltraSafe circuitry adds spark-proof clamps and reverse polarity protection. It suits drivers of large trucks, RVs, boats and tractors who want one pack that also charges devices, though it is bulkier and heavier than the smaller Boost X models meant for cars.
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Owners of large trucks, RVs and boats praise the GBX155 for starting big diesel engines that smaller packs cannot. Many like the fast USB-C recharge and the power bank function. Some find it heavy and bulky, and a few report units that failed or arrived with a low charge.
The NOCO Boost X GBX155 is a portable lithium jump starter for 12-volt batteries. It is rated at 4250 amps and starts engines up to 10.0-liter gasoline and 8.0-liter diesel. It works on cars, motorcycles, trucks, ATVs, boats, RVs, vans, SUVs and tractors.
UltraSafe technology includes spark-proof design and reverse polarity protection. Enhanced thermal efficiency and power management are built in for better performance and longer battery life.
A USB-C port with Power Delivery recharges the unit in 2.7 hours. Five minutes of charge takes it from 0% to jump-starting ready. The internal power bank provides 60 watts in and out, so it can also power USB-C devices such as phones, tablets, laptops and wearables.
