Product Specifications for NOCO GB250+ Boost Max 5250A 12V UltraSafe Lithium Jump Starter
| BM Part #: | GB250 |
|---|---|
| Voltage: | 12 Volt |
| Type: | Li-Ion |
| Length: | 12.43" |
| Width: | 6.09" |
| Height: | 3.69" |
| Shipping Weight: | 14.70Lbs |
| Warranty: | 1 Year |
| Product Manual: | Download |
| Datasheet: | Download |
What's in the box:
- GB250+ Lithium Battery Jump Starter
- 56-Watt XGC Power Adapter
- 12-Volt 2-Foot XGC Cable
- Protective Carrying Case
- User Guide & Warranty Information
- 5,250A Peak Starting Power: Jump starts gasoline and diesel engines up to 16 liters, including Class 8 semi-trucks and heavy equipment.
- UltraSafe 2.0 Technology: Spark-proof clamps and reverse polarity protection prevent damage from incorrect or accidental connections.
- Commercial Power at 14.7 Lbs.: Replaces heavy lead-acid jump starters without giving up the amperage serious engines require.
- Integrated Voltmeter and Auto-Shutoff: Diagnose battery health on the spot and automatically conserve unit charge after each 60-second jump sequence.
- IP65-Rated for All-Weather Use: Sealed against dust and water, and operates reliably in temperatures from -4°F to 122°F.
- 600-Lumen LED Flashlight: Seven modes, including SOS and emergency strobe, provide critical visibility during any roadside situation.
Product Description
If you run a semi-truck, manage a fleet, operate heavy equipment, or live out of a Class A motorhome, you already know what a dead battery really costs you. Not just the repair call — the downtime. The NOCO GB250+ Boost Max was built specifically to solve that problem, without the 30-plus-pound wheeled cart that most high-amperage jump starters demand.
At 5,250 peak amps, the GB250+ is NOCO's most powerful 12V portable jump starter. It can bring a completely dead battery back to life on gasoline and diesel engines up to 16 liters in size, covering everything from your pickup to a Class 8 semi-truck. One unit. One solution.
Built for Heavy-Duty Applications
The GB250+ is purpose-built for commercial and demanding real-world use. It handles:
- Semi-trucks and tractor-trailers up to Class 8
- Buses, coaches, and motorhomes
- Agricultural and construction equipment
- Mining and vocational vehicles
- Gas and diesel engines with 6, 8, 12, or 16 cylinders
Lead-acid units in the same amp class typically weigh 30 to 40 lbs or more. The GB250+ weighs just 14.7 lbs. That is a tool you can actually keep in your cab, storage bay, or go-bag and forget about it until you need it.
Safe Enough for Anyone to Use
Connecting cables to a dead battery on a commercial vehicle should not be stressful. NOCO's UltraSafe 2.0 technology makes it practically impossible to cause damage during the process. Spark-proof clamps and reverse polarity protection mean a wrong connection won't result in a dangerous situation. A built-in digital voltmeter also lets you assess battery health before you attempt a jump, so you know exactly what you're dealing with.
The 60-second auto-shutoff timer activates after you press the power button, keeping you focused during the jump sequence and helping preserve the unit's internal charge between uses.
Ready for Real Conditions
The GB250+ is IP65-rated, sealing it against dust and water intrusion. It operates reliably from -4°F to 122°F, so a bitter winter morning or a sweltering job site in July won't slow it down.
A 600-lumen LED flashlight with seven modes, including SOS and emergency strobe, adds real roadside safety when you need to be seen. Two built-in USB ports let you charge phones, tablets, or other devices while you work, backed by a 242 Wh lithium-ion battery pack. The included 56W power adapter brings the unit back to a full charge in as little as 4 hours.
The GB250+ ships with everything you need: the jump starter, 56W XGC power adapter, 12V XGC cable, protective carrying case, and user guide.
Stop depending on roadside assistance and start depending on yourself. Order the NOCO GB250+ today and put commercial-grade starting power exactly where you need it.
Frequently Asked Questions
What vehicles and engines is the NOCO GB250+ compatible with?
A: The GB250+ is designed for 12-volt battery systems across a wide range of vehicles and equipment. It jump starts gasoline and diesel engines up to 16 liters in size, including semi-trucks up to Class 8, buses, coaches, motorhomes, RVs, and agricultural, construction, and mining equipment. It supports 6-, 8-, 12-, and 16-cylinder configurations.
Is it safe to use if I'm not experienced with jump starters?
A: Yes. NOCO's UltraSafe 2.0 technology is specifically designed to protect against the most common mistakes. The clamps are spark-proof, and reverse polarity protection prevents damage if the cables are connected in the wrong order. The built-in voltmeter also helps you understand the battery's condition before you start, removing most of the guesswork.
How do I recharge the GB250+, and how long does it take?
A: The GB250+ recharges using the included 56W XGC power adapter, which can bring the unit from empty to full in as little as 4 hours when plugged into a standard AC outlet. It can also be recharged through a vehicle's 12-volt auxiliary port using the included XGC cable, though charge times will be longer via that method.
Can the GB250+ handle cold weather starts?
A: Yes. The GB250+ has an operating temperature range of -4°F to 122°F, making it suitable for cold-weather use. It has been tested successfully on large diesel engines in sub-freezing temperatures. Note that while the unit can operate in the cold, charging should only be done within the 32°F to 104°F range.
Does the GB250+ work on 24-volt battery systems?
A: No. The GB250+ is built exclusively for 12-volt battery systems. If you need jump-start capability for a 24-volt system, such as certain heavy-duty European trucks or commercial equipment, NOCO offers the GB251, which is designed specifically for 24V applications.
