NOCO
NOCO Boost Max GB250: 5250A UltraSafe Jump Starter – 12V Lithium Battery
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Highlights
- BOOST MAX SERIES — One of the most powerful lithium jump starters ever. Up to 5,250 amps to start gas and diesel engines up to 16L - engineered for commercial and industrial engine starts.
- ULTRASAFE TECHNOLOGY — Patented spark-proof and reverse polarity protection ensures safe, mistake-free connections on any 12V battery - trusted by professionals worldwide.
- COMMERCIAL-GRADE POWER — Starts nearly any engine - Class 8 trucks, buses, motorhomes, agricultural, construction, mining, and vocational equipment - 6, 8, 12, and 16 cylinders.
- PORTABLE POWER BANK — Integrated power bank delivers emergency power to smartphones, tablets, and more. Fully recharges in 4 hours with the included 56W power adapter.
- INTEGRATED LED FLASHLIGHT — Precision-engineered 600-lumen LED with 7 light modes, including SOS and strobe. Illuminate repairs, emergencies, or low-light environments.
- COMPACT FOR ITS CLASS — Only 15 lb, yet delivers unmatched starting power. Replaces oversized units with a compact design - engineered to start the largest and most demanding engines.
- WHAT’S IN THE BOX — GB250 jump starter, 56W power adapter, AC cords (AU, EU, US, UK), XGC adapters, and EVA protective case. Backed by a 1-year warranty and engineered in the USA.
Why You'll Love It
- Delivers 5,250 starting amps to crank large gas and diesel engines up to 16 liters
- Spark-proof design with reverse polarity protection prevents hookup errors on 12V batteries
- Built-in power bank recharges your mobile devices and recharges itself fully in 4 hours
- Multi-mode 600-lumen LED flashlight provides emergency light, SOS, and strobe functions
- Weighs 15 pounds and includes an EVA protective storage case for easier transport
Pros
- +Massive 5,250-amp starting power
- +Safe spark-proof and reverse polarity protection
- +Charges mobile devices via built-in power bank
- +Fast 4-hour recharge time with included adapter
- +Includes multi-region AC power cords
Cons
- -Substantial 15-pound weight to carry around
- -Only compatible with 12V electrical systems
- -High price point for non-commercial users
Detailed Review
The NOCO Boost Max GB250 is a heavy-duty 12V lithium jump starter designed for commercial and industrial vehicles. Delivering up to 5,250 amps, it tackles large gas and diesel engines up to 16 liters, making it suitable for Class 8 trucks, buses, motorhomes, and heavy machinery used in agriculture, mining, and construction.
Connecting to large batteries is straightforward and secure thanks to integrated UltraSafe technology. This system includes spark-proof connections and reverse polarity protection, eliminating safety concerns during hookup. Despite handling 6, 8, 12, and 16-cylinder engines, the unit weighs 15 pounds, offering a more portable footprint than traditional oversized commercial units.
Beyond engine starts, the GB250 serves as a portable power station and worksite utility. It includes an integrated power bank to charge smartphones and tablets, and recharges fully in 4 hours using the included 56W power adapter. It also features a 600-lumen LED light with 7 light modes, including strobe and SOS, providing clear visibility during nighttime roadside emergencies.
Keep in mind that while it is compact for a commercial jump pack, 15 pounds is still noticeable to haul by hand. It is dedicated strictly to 12-volt systems, so operations requiring 24-volt jump starting will need other equipment. The manufacturer backs the unit with a 1-year warranty.
Verdict: The NOCO GB250 is a reliable, high-capacity starting solution for fleet managers, equipment operators, and heavy-duty truck drivers. If you regularly manage large diesel machinery up to 16L and need safe, self-contained jump starting, this unit is well worth having on hand.
Specifications
- Starting Current: 5,250 Amps
- System Voltage: 12V
- Engine Compatibility: Gas and diesel engines up to 16.0L
- Weight: 15 lb
- Flashlight Brightness: 600 lumens (7 modes)
- Recharge Time: 4 hours (with 56W adapter)
- Warranty: 1-year warranty
Who Should Buy It
A great fit if you:
- Operate Class 8 semi-trucks, motorhomes, buses, or large vocational vehicles.
- Maintain agricultural, construction, or mining equipment with engines up to 16 liters.
- Need a high-output jump starter with built-in reverse polarity and spark protection.
- Want an all-in-one emergency kit with an included EVA case and international power cords.
Consider something else if you:
- Only need to jump start standard passenger cars and light-duty consumer trucks.
- Require a jump starter that works on 24-volt battery setups.
- Want a lightweight unit under ten pounds for simple glovebox storage.
FAQ
What engine sizes can the NOCO GB250 start?
It is rated to start gas and diesel engines up to 16 liters, including 6, 8, 12, and 16-cylinder configurations found in commercial vehicles and heavy machinery.
How long does it take to recharge the jump starter?
The unit recharges completely in 4 hours using the included 56W power adapter.
What accessories come in the box?
The package includes the GB250 jump starter, a 56W power adapter, AC cords for US, UK, EU, and AU outlets, XGC adapters, and an EVA protective carrying case.
What safety protections are built into the unit?
It features patented UltraSafe technology, which provides built-in spark-proof connections and reverse polarity protection to prevent errors during hookup.
Product Details
| Brand | NOCO |
| ASIN | B08V6MJ2NR |
