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NOCO Boost X GBX55 1750A 12V UltraSafe Lithium Jump Starter for Engines up to 7.5 L Gas / 5.0 L Diesel
1750A for up to 7.5 L gas / 5.0 L diesel Boost Mode starts in about 60 s

Official product photos: NOCO · source More photos on Amazon

Best for trucks and SUVs NOCO · Car Electronics

NOCO Boost X GBX55 1750A 12V UltraSafe Lithium Jump Starter for Engines up to 7.5 L Gas / 5.0 L Diesel

More muscle than the GB40 for V8 trucks, SUVs and mid-size diesels, still small enough to stow under a seat.

RightScore Score pending
Best for Emergencies Road trips Camping Cold weather

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  • 1750A for up to 7.5 L gas / 5.0 L diesel
  • Boost Mode starts in about 60 s
  • 200-lumen flashlight, 5 modes

At a glance

Our verdict

—

The NOCO to buy if you drive something bigger than a family sedan: enough current for most V8s and mid-size diesels in a pack that still fits under a seat. It costs more than the GB40 and carries the same one-year warranty, and it...

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Read the full verdict

Best for

  • Emergencies
  • Road trips
  • Camping
  • Cold weather

Best thing: Covers most trucks, SUVs, boats and RVs

Honest catch: Pricier than the GB40

Our verdict

The NOCO to buy if you drive something bigger than a family sedan: enough current for most V8s and mid-size diesels in a pack that still fits under a seat. It costs more than the GB40 and carries the same one-year warranty, and it is not meant for heavy-duty diesels above 5.0 L.
RightDeals research · checked 11 Oct 2026
The GBX55 is NOCO's step up for bigger vehicles: 1750 amps for 12V batteries in gas engines up to 7.5 L and diesels up to 5.0 L, which covers most pickups, large SUVs, vans, boats and RVs. Boost Mode is designed to get you started within about 60 seconds, status indicators flag starter and battery problems, and heat and cold indicators warn when the pack is outside its comfort zone. USB ports charge your phone or tablet, and the LED flashlight reaches up to 200 lumens with five modes, including blink and strobe for signaling.

Why you’ll like it

  1. 01

    Enough for bigger vehicles: 1750 amps covers most V8 pickups, large SUVs, vans and mid-size diesels.

  2. 02

    Tells you what is wrong: status indicators flag starter and battery issues, and heat/cold indicators protect the pack.

  3. 03

    More than a jump starter: USB ports charge phones and tablets while you wait.

  4. 04

    Seen at night: a 200-lumen LED light with blink and strobe modes for roadside signaling.

Great for

  • Pickup, large SUV and van owners
  • Boat and RV owners with 12V starting batteries

Maybe skip it if

  • You only drive a compact car (the GB40 is enough)

Where it shines

How well it suits each use, based on its specifications.

  • Emergencies Great
  • Road trips Great
  • Camping Good
  • Cold weather Good

Pros & cons

Pros

  • Covers most trucks, SUVs, boats and RVs
  • Status, heat and cold indicators
  • Manual override for full control
  • Bright 200-lumen flashlight

Cons

  • Pricier than the GB40
  • Not for heavy-duty diesels above 5.0 L; one-year warranty

Based on the maker’s specifications and published information — every point is checked against a named source.

Where to buy

Stores we link to in US. We show a price only when it is live.

Prices for United States in USD
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Specifications

General

Warranty
1-year limited

Connectivity

Device charging
USB ports for phones, tablets and computers

Dimensions

Dimensions
7.7 × 4.9 × 2.5 in (196 × 124 × 64 mm)

Features

Flashlight
LED, up to 200 lumens, 5 modes incl. blink and strobe
Indicators and control
Heat, cold, starter and battery status indicators; manual override

Performance

Engine size
Up to 7.5 L gas / 5.0 L diesel (12V)
Boost Mode
Starts within about 60 seconds in Boost Mode

Size & weight

Weight
41.28 oz (1170 g)

Power

Peak current
1,750 A

Source: RightDeals research · verified 2026-10-11

Our score is on its way

We publish it only once enough real data is in — see how we rank products.

How We Rank Products

What buyers say

We only show star ratings we are licensed to display. Read verified buyer reviews and photos directly on Amazon.

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Questions people ask

GB40 or GBX55 — which do I need?

The GB40 covers gas engines up to 6.0 L and diesels up to 3.0 L. The GBX55 extends that to 7.5 L gas and 5.0 L diesel, so choose it for V8 trucks, large SUVs and mid-size diesels.

Can it be used on boats and RVs?

Yes, as long as the starting battery is a 12V battery and the engine is within the 7.5 L gas / 5.0 L diesel rating.

Sources & method

Researched from the maker’s specifications, the store listing and published information — not lab-tested. We never accept payment for a recommendation.

How We Rank Products · Editorial policy

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