Technical Specifications

What’s In The Box

  • GBX155 Lithium Jump Starter
  • Integrated HD Precision Battery Clamps
  • 24in USB-A to USB-C Cable
  • 24in 12V to USB-C Cable
  • Microfiber Storage Bag
  • User Guide & Warranty Information

Starting Current

4250 Amps (Peak)

Battery Types

12 Volt Lead-Acid Batteries

Internal Battery

99 Watt-Hour Lithium-Ion

USB Input

USB-C: 5 Volts 1.5 Amps / 9 Volts 3 Amps / 12 Volts 3 Amps / 15 Volts 3 Amps / 20 Volts 3 Amps

USB Output

USB-A: 5 Volts 2.1 Amps Max / 10 Watts Max
USB-C: 5 Volts 3 Amps / 9 Volts 3 Amps / 12 Volts 3 Amps / 15 Volts 3 Amps / 20 Volts 3 Amps

Gas Engine Rating

Up to 10.0 Liters

Diesel Engine Rating

Up to 8.0 Liters

LED Flashlight

500 Lumens

Product Size

Height: 6.89 Inches (175.0 mm)
Width: 12.03 Inches (305.6 mm)
Depth: 2.72 Inches (69.1 mm)
Weight: 5.82 lbs (2.64 kg)

IP Rating

IP65 (w/ Ports Closed)

Limited Warranty

1-Year Hassle-Free Warranty

GBX155 4250A 12V UltraSafe Lithium Jump Starter | NOCO

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The Boost X GBX155 UltraSafe Lithium Jump Starter is an advanced and portable solution designed to jump-start 12-volt batteries in a wide variety of vehicles. Capable of handling engines up to 10.0 liters for gasoline and 8.0 liters for diesel, this powerful device is ideal for cars, motorcycles, trucks, ATVs, boats, RVs, vans, SUVs, tractors, and more. As part of the new Extreme Series, it delivers an impressive 4,250 amps, ensuring maximum energy release at every start.

The GBX155 features cutting-edge USB-C technology combined with power delivery, allowing for rapid recharging. It can achieve a full charge in just 2.7 hours, or provide enough power for a jump start in merely 5 minutes of charging. This efficiency ensures the device is always ready for immediate use. Additionally, its internal power bank provides 60 watts of power, both in and out, enabling it to charge a range of USB-C devices, including phones, tablets, laptops, and wearables with ease.

Enhancing the trusted UltraSafe technology, the GBX155 includes a simple, mistake-free design that incorporates spark-proof technology and reverse polarity protection. These features, along with improved thermal efficiency and power management, deliver better performance and longer battery life, ensuring reliable operation in various conditions.

The versatility of the GBX155 is unparalleled, capable of jump-starting a broad spectrum of vehicles. Whether it’s a car, motorcycle, truck, ATV, boat, RV, van, SUV, or tractor, this jump starter can handle it, making it one of the most adaptable lithium jump starters available.

In summary, the NOCO Boost X GBX155 UltraSafe Lithium Jump Starter combines extreme power, advanced technology, and enhanced safety features. It sets a new standard in portable jump-starting solutions, providing unmatched performance and convenience for both professional and personal use, ensuring you are always prepared for any jump-starting need.