SKU: 35534564603

NOCO gbx155 Boost X 12V 4250A Jump Starter

Sale price$166.50 Regular price$185.00
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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12

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Description

NOCO gbx155 Boost X 12V 4250A Jump StarterUnleashing the Power of NOCO Boost Max GBX155 The NOCO Boost Max GBX155 is the pinnacle of the NOCO X Series, representing a complete reimagining of what a portable lithium jump starter can achieve. Designed for high displacement gasoline and diesel engines, this unit delivers a staggering 4250 amps of starting power. This is sufficient to jump start engines up to 10. 0L Gas and 8. 0L Diesel, covering everything from passenger cars to semi trucks and

Unleashing the Power of NOCO Boost Max GBX155

The NOCO Boost Max GBX155 is the pinnacle of the NOCO X Series, representing a complete reimagining of what a portable lithium jump starter can achieve. Designed for high-displacement gasoline and diesel engines, this unit delivers a staggering 4250 amps of starting power. This is sufficient to jump-start engines up to 10.0L Gas and 8.0L Diesel, covering everything from passenger cars to semi-trucks and motorhomes. The GBX series introduces the new "Extreme" design, which focuses on rapid power delivery and ultra-fast charging. By utilizing the latest lithium-polymer battery chemistry, NOCO has managed to create a device that is significantly more powerful than its predecessors while maintaining a portable form factor that can be handled by a single individual.

Thermal Efficiency and Ultra-Fast Charging

One of the most impressive technical advancements in the GBX155 is its 60W USB-C Power Delivery system. This allows the unit to be fully recharged in just a few hours, or to provide enough power for a jump start after only five minutes of charging. The internal battery architecture is optimized for high-speed thermal dissipation, allowing for multiple jump-starts in quick succession without the unit entering a thermal lockout. This efficiency is vital for roadside assistance professionals who may have to assist multiple stranded motorists in a single shift. The unit also serves as a high-speed charger for USB devices, making it an excellent companion for off-grid travel.

Safety First with UltraSafe 2.0 Technology

Safety is the most critical aspect of any high-power electrical device, and NOCO’s UltraSafe 2.0 technology provides the ultimate peace of mind. This system includes spark-proof technology and reverse polarity protection, but it goes further by improving the thermal efficiency and battery management to provide better performance and longer battery life. The jumper cables are integrated directly into the housing to minimize resistance and heat, and the clamps are designed to be slim yet incredibly durable, fitting into tight battery compartments that other jump packs cannot reach. This ensures a safe, spark-free connection every time, regardless of the user's technical skill level.

A Versatile Tool for Modern Roadside Recovery

The NOCO GBX155 is more than just a battery booster; it is a full-featured emergency tool. It features an incredibly bright 500-lumen LED flashlight with seven different modes, including SOS and emergency strobe. This is an essential safety feature for changing tires or inspecting an engine at night. The ruggedized casing is rated IP65 for water and dust resistance, meaning it can be used in rain, snow, and mud without fear of damaging the internal electronics. This durability makes it a favorite among off-road enthusiasts and heavy equipment operators who work in the most challenging environments on earth.

Unmatched Capability and Safety Features

  • Delivers 4250 amps of peak starting power for engines up to 10L Gas / 8L Diesel.
  • 60W USB-C Power Delivery for ultra-fast recharging and laptop power.
  • UltraSafe 2.0 technology provides spark-proof and reverse polarity protection.
  • High-intensity 500-lumen LED flashlight with multiple emergency modes.
  • Rugged, water-resistant IP65 rated housing for use in all weather conditions.

Advanced Battery Management Systems

The GBX155 utilizes a sophisticated internal battery management system (BMS) that monitors the state of health of each individual lithium cell. This ensures the cells are balanced during charging and discharging, which significantly extends the overall lifespan of the device. The BMS also protects against over-charging and deep-discharging, two of the most common causes of lithium battery failure. By maintaining the battery in its optimal state, NOCO ensures that the GBX155 will be ready to perform even after months of storage. This reliability is why the Boost Max series is considered the gold standard for portable jump-starting technology.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 35534564603

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mike
Grantham, US
★★★★★ 5
Good watch
Color: Black/Black/Digital
Bought for my 8 yo, durable
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Reviewed in the United States on October 19, 2025
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Katelyn Vincent
Bozeman, US
★★★★★ 5
As expected
Color: Gray/Gray/Digital
Just an old school digital timex. Tried and true. Has both 12hr and 24hr function on the time setting. Has a standard stop watch and timer. The battery is great, just as it always is on a timex. Good water resistance and very easy to use. Overall very good watch for the price!
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Reviewed in the United States on July 6, 2025
D
Verified Purchase
David C. Gilliam
New York, US
★★★★★ 2
Can’t read numbers
Color: Gray/Gray/Digital
Numbers are too small to tread on a 44mm watch
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Reviewed in the United States on May 5, 2026
H
Verified Purchase
hal lifson
Draper, US
★★★★★ 5
Love the Timex Ironman Shock watches!!
Color: Black/Black/Digital
I really like the Timex Ironman Shock watches. They are very durable and reliable. Simple to use and modeled after the. Original Ironman watches of the late 80s and 90s. Buttons are clearly marked and easy to press. They used to make many colors of this Shock model of the watch inc a cool shiny red color my wife still has . I have been a runner many many years and at 65, am still out although a lot slower than my 20s. But Timex Ironman watches have. Been my constant companion on the roads and track for 35 years now.
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Reviewed in the United States on March 27, 2026
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Verified Purchase
ricardo
Draper, US
★★★★★ 5
Really nice
Color: Black/Green/Digital
Really nice watch but remind you it’s a negative display not a positive but since I have a small wrist it fits perfect. And I love it
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Reviewed in the United States on December 16, 2025

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