NOCO Boost Plus GB40 Jump Starter Review
A 1,000-amp lithium jump starter rated for gasoline engines up to 6.0 L and diesel engines up to 3.0 L.
By Watt Versus Editorial· Updated
This page was drafted with AI assistance and reviewed by our editor before publication.
Our verdict
The sensible default for a gasoline car or SUV. Diesel truck owners should step up to the GB70.
Pros and cons
Pros
- Covers most cars, crossovers and half-ton trucks with gasoline engines up to 6.0 L
- Spark-proof clamps and reverse-polarity protection
- IP65 housing and a compact 2.4 lb body
- Up to 20 jump starts per charge, by NOCO's figures
Cons
- Diesel rating stops at 3.0 L, too small for most diesel pickups
- A 1-year warranty is short for this category
- Works with 12-volt lead-acid batteries only
Specifications
| Peak current | 1,000 A |
|---|---|
| Gas engines | Up to 6.0 L |
| Diesel engines | Up to 3.0 L |
| Jump starts per charge | Up to 20 |
| USB output | 5 V, 2.1 A |
| Recharge time | 3 hours at 2 A, 6 hours at 1 A |
| Flashlight | 100 lumens, 7 modes |
| Water and dust rating | IP65 with ports closed |
| Weight | 2.4 lb |
| Dimensions | 6.7 x 3.2 x 1.7 in |
| Warranty | 1 year |
The full review
Who it suits
Drivers of gasoline cars, crossovers and light trucks who want a compact starter to keep in the vehicle all year.
Who should skip it
Owners of diesel pickups or large V8 trucks near the 6.0 L limit: a unit rated well above your engine size starts more reliably in the cold. It is also not for vehicles with lithium starter batteries.
What we could not confirm
NOCO's current page shows a USB-C charging input, while older manuals list Micro USB, so the port depends on when the unit was made. We have left the internal battery capacity out of the table because the documents we read did not state it.
Frequently asked questions
- What size engine can the NOCO GB40 start?
- NOCO rates it for gasoline engines up to 6.0 liters and diesel engines up to 3.0 liters.
- How many jump starts does the GB40 give per charge?
- Up to 20 on a full charge, according to NOCO.
- Does the GB40 work on any car battery?
- It is designed for 12-volt lead-acid batteries only. It is not for 6-volt or 24-volt systems, or for lithium starter batteries.
Ready to buy the NOCO Boost Plus GB40 Jump Starter?
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