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Internet # 318227939

Model # GBX155

Boost X 12-Volt 4250 Amp Lithium Jump Starter

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  • Engineered with technology to charge up to 5 times faster
  • Spark and reverse polarity protection for added safety
  • 500 Lumens LED flashlight for convenience
  • View More Details
Free & Easy Returns In Store or Online
Return this item within 90 days of purchase. Read Return Policy

Product Details

About This Product

GBX155 - 12-Volt 4250 Amp UltraSafe Lithium Ion Jump Starter. An all-new design with extreme jump starting power for fast and powerful engines starts. Introducing a new kind of jump starting experience, featuring our latest PX Lithium Technology that delivers incredible power, ultra-fast charging, and unmatched versatility. This isn't an upgrade. It's a whole new series - BOOST X with more starting power. The new Boost X combines tremendous power with unmatched ease of use, versatility, and maximum conductivity.


  • Compact, yet powerful lithium jump starter rated at 4250 Amp
  • Ultra-safe and mistake-proof design with spark-proof technology and reverse polarity protection, which allow it to safely connect to any battery
  • Ultra-bright 500 Lumens LED flashlight with 7-light modes, including SOS and emergency strobe
  • Recharge your personal devices on the go, like smartphones, tablets, e-watches and more
  • Designed for gas engines up to 10.0 l and diesel engines up to 8.0 l for cars, boats, lawn mowers and more
  • Return Policy

Product Information

Internet # 318227939

Model # GBX155

Additional Resources

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From the Manufacturer


Dimensions: H 5.20 in, W 13.86 in, D 8.50 in


Cord Length (in.)

24 in

Product Depth (in.)

8.50 in

Product Height (in.)

5.20 in

Product Width (in.)

13.86 in


Cable gauge


Charger type



Accessory Outlets, Reverse Polarity Protection

Included Parts

No Additional Items

Peak Amps


Product Weight (lb.)

7.17 lb

Recharge time (min.)


Reserve capacity (Ah)




Starting current (amps)


Warranty / Certifications

Certifications and Listings

CSA Listed, ETL Listed, UL Certified

Manufacturer Warranty

1-Year Limited

Questions & Answers

Q:Will this boost an AGM battery on a mototcycle.
by|Apr 28, 2024
1 Answer
Answer This Question

A:  Yes, the Boost and Boost X line of jump starters can be used on all Lead-Acid batteries. These include Wet-Cell, Gel-Cell, AGM, AGM+, Maintenance Free, and EFB batteries.

by|Apr 29, 2024
    Q:How many AC power outlets does this item have?
    by|Apr 23, 2024
    1 Answer
    Answer This Question

    A:  None, the NOCO Boost Jump Starters do not feature AC power outlets

    by|Apr 25, 2024
      Q:Do you have to connect it to the Vehicle battery to jump start a vehicle or can you just plug it into the vehicle charging port. Because some batteries terminal are hard to connect to for some people
      by|Jan 19, 2024
      1 Answer
      Answer This Question

      A:  The NOCO Boost Jump Starter needs to be connected via the battery terminals/posts (the negative clamp can connect to a negative ground on the vehicle chassis rather than the post if necessary). There is no way to jump start the vehicle from the 12V port inside of the vehicle.

      by|Jan 22, 2024
        Q:Can this be overcharged or does it automatically shut down
        by|Aug 26, 2023
        1 Answer
        Answer This Question

        A:  All NOCO Boost Jump Starters have over-charge protection built in.

        by|Aug 28, 2023
          Showing 1-4 of 28

          Customer Reviews

          4.4 out of 5

          • 4.4 out of 130 reviews
          • 69% recommend this product
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          Showing 1-10 of 130 reviews
          Very happy to have this dependable unit
          Great product works on our ford 350 diesel 7.3 L truck, Ford Ranger 4.0L and multiple other trucks and cars for our family. Came in great looking packaging with 12 volt car charger and USB charging cable. Unit has ports to plug in your phones, iPad and other devices. Light on unit is great idea for night time connections and repairs. Unit charges much faster than older models. Note must have car/truck running to properly fully charge unit. I was disappointed that unit didn't come with a house AC charging system, NOCO website has the house charger U65, 65W USB-C Charger with carrying case. Charges up to five times faster than traditional USB wall or car chargers. Cost about $ 70.00 plus shipping. That is why it didn't give it 5 stars. Very happy to have this dependable unit with me when traveling or on that very cold morning the car or truck will not start.
          • Verified Purchase
          1 found this review helpful
          Don't Call A Tow Truck For A Jump Start
          This is a very nice piece of equipment to have. I have used it at least a half dozen times and it performed perfectly. It's small, powerful and easy to use. It's been used on both a cars and SUVs. No more cumbersome bulky jumper cables. Had to call a tow truck once, they carried the same brand (different model) on the truck, so I bought this one.
          • Verified Purchase
          • Recommended
          1 found this review helpful
          No good
          after using it twice. My NOCO GBX75 2500A tried to recharge the battery but I never charged, I tried with different chargers and the result was the same, I never charge... It's a shame.
            • Verified Purchase
            Exceeded expectations
            • Verified Purchase
            • Verified Purchase
            All good, except an 120V UBS converter was not included. No way to recharge without additional purchase. Boo!!!
            • Verified Purchase
            Fails to live up to what box claims.
            • Verified Purchase
            • Verified Purchase
            • Verified Purchase
            Showing 1-10 of 130 reviews