NOCO Boost Max GB250: 5250A 12V UltraSafe Portable Lithium Jump Starter

The NOCO Boost Max GB250 is an ultra-powerful 12-volt portable lithium car battery jump starter rated at 5250 amps, engineered for gasoline and diesel engines up to 16 liters—including semi-trucks (up to Class 8), RVs, coaches, buses, motorhomes, agricultural vehicles, mining rigs, and heavy construction equipment. This heavy duty truck jump starter delivers unmatched performance with up to 80 jump starts on a single charge and is trusted by professionals across automotive, fleet, and industrial environments. The GB250 features patented UltraSafe technology with spark-proof clamps and reverse polarity protection, making it a safe and mistake-proof auto battery jump starter even in high-stakes conditions. At just 15 pounds, it’s remarkably portable for a jump starter of this capacity, offering convenience without compromising power. It includes a 500-lumen LED flashlight with seven light modes including SOS and strobe, plus USB ports and a 12V output for powering devices, inflators, and inverters. Whether you need a booster pack jump starter for semi-trucks, a portable car battery jump starter for large diesel engines, or an all-in-one self jump starter for car, truck, and industrial applications, the GB250 is the ultimate jump starter power pack for professionals who demand safety, reliability, and serious starting power.

THE BOOST MAX SERIES — Our most powerful lithium jump starters yet. Designed for the largest, most challenging engine starts ever. With over 5250-amps of starting power, it can jump start gasoline and diesel engines up to 16-liters. ULTRASAFE — Safe and easy to use battery jump starter pack without the worry of incorrect connections or sparks. Safely connect to any 12-volt battery with our mistake-proof design featuring spark-proof technology and reverse polarity protection. COMMERCIAL GRADE — It's commercial in every way. It jump starts almost every type of vehicle and equipment, including semi-trucks (up to class 8), motorhomes, coaches, buses, mining, agricultural, construction, and vocational equipment - 6, 8, 12, and 16 cylinder - and more. Plus, an integrated digital battery voltmeter for enhanced diagnostics. BEYOND PORTABLE — Jump starters this powerful typically are enormous and weigh hundreds of pounds, but our high discharge lithium technology makes it the most compact and lightweight design in the world - weighing a mere 15-pounds. And its portable carrying case makes jump starting more convenient than ever. MULTI-FUNCTIONAL — It's not just a lithium jump starter but also a portable power bank for recharging smartphones, tablets, and other USB devices, with an ultra-bright 600-lumen LED flashlight with seven light modes, including emergency strobe and SOS. IN THE BOX — Inside, you will find a GB250 portable jump starter with battery booster cables, a 56W power adapter with interchangeable AC cords, an XGC kit, and an EVA storage case. It also comes with a one-year warranty and is proudly designed in the USA.