NOCO Boost X GBX55 Jump Starter Review
A 1,750-amp lithium jump starter for gasoline engines up to 7.5 L and diesels up to 5.0 L, with 60 W USB-C charging in and out.
By Watt Versus Editorial· Updated
This page was drafted with AI assistance from manufacturers' specs and manuals, and is checked by our editor.
Our verdict
The Boost X size that fits most garages: gasoline engines up to 7.5 L and diesels up to 5.0 L in a 2.58 lb pack that recharges over USB-C. Smaller cars can save weight with the GBX45; diesel pickups should step up to the GBX75 or GB150.
Pros and cons
Pros
- Covers gasoline engines up to 7.5 L and diesels up to 5.0 L, a step above the GBX45
- Full recharge in 1.2 hours from a 60 W USB-C charger, by NOCO's figures
- The USB-C port also charges phones and laptops at up to 60 W
- IP65 housing at 2.58 lb
Cons
- No 12 V accessory output, so it cannot run a tire inflator
- NOCO does not publish a jump-starts-per-charge figure for the Boost X range
- A 1-year warranty is short for this category
Specifications
| Peak current | 1,750 A |
|---|---|
| Gas engines | Up to 7.5 L |
| Diesel engines | Up to 5.0 L |
| Battery capacity | 46 Wh |
| USB output | USB-A 5 V, 2.1 A (10 W); USB-C up to 20 V, 3 A (60 W) |
| Recharge time | 1.2 hours at 60 W over USB-C; 7.2 hours at 10 W |
| Flashlight | 200 lumens |
| Water and dust rating | IP65 with ports closed |
| Weight | 2.58 lb (1.17 kg) |
| Dimensions | 7.7 x 4.9 x 2.5 in |
| Warranty | 1 year |
Who it suits
Drivers of cars, SUVs and gasoline pickups with engines up to 7.5 L, and small diesels up to 5.0 L, who want a starter that shares a USB-C charger with their phone and laptop. NOCO rates a full recharge at 1.2 hours with a 60 W USB-C charger, and says five minutes of charge is enough for a jump from empty.
It is the middle of NOCO's Boost X range: see GBX55 vs GBX45 for the smaller model.
Who should skip it
Owners of diesel pickups over 5.0 L: the GBX75 covers diesels up to 6.5 L and the Boost Pro GB150 up to 7.0 L. Anyone who wants a 12 V socket for an inflator should look at the Boost HD GB70.
What we could not confirm
NOCO publishes no jump-starts-per-charge figure for the GBX55. The warranty is NOCO's one-year limited warranty from the user guide; buyers in the EU and UK may get longer coverage under local law.
Frequently asked questions
- What size engine can the NOCO GBX55 start?
- NOCO rates the GBX55 for gasoline engines up to 7.5 liters and diesel engines up to 5.0 liters, at 1,750 peak amps.
- How long does the GBX55 take to recharge?
- About 1.2 hours with a 60 W USB-C charger, according to NOCO, or 7.2 hours at 10 W.
- Is the GBX55 waterproof?
- NOCO rates the housing IP65 with the ports closed.
Sources
The specifications and claims on this page come from these manufacturer documents. Figures are the manufacturers' own unless the text says otherwise.
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