NOCO GB40 vs GB70: Which Jump Starter? (2026)
Two NOCO lithium jump starters side by side. We have not tested them.
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Pick the GB40 for most cars and the GB70 for large gas engines and diesels.
Quick picks
- Best for most carsBoost Plus GB40Check price
- Best for trucks and dieselsBoost HD GB70Check price
| Spec | Top pickNOCOBoost Plus GB40 | NOCOBoost HD GB70 |
|---|---|---|
| Best for | Most cars, kept in the glovebox | Trucks, SUVs and larger engines |
| Peak currenthigher is better | 1,000 A1000 A | 2,000 A★ Best2000 A |
| Engine rating | Gas up to 6.0 L, diesel up to 3.0 L | Gas up to 8.0 L, diesel up to 6.0 L |
| Battery | 24 Wh lithium-ion | 56 Wh lithium-ion |
| Weight | 2.45 lb (spec page); 2.4 lb with clamps (data sheet) | 4.18 lb |
| USB out | 5 V, 2.1 A | 5 V, 2.1 A (plus 12 V, 15 A XGC out) |
| IP rating | IP65 (ports closed) | IP65 |
| Warranty | 1 year | 1 year |
| Price | Check price | Check price |
Specs from each manufacturer's US product page. Bars compare each spec against the best value in this table; they are not test scores. Prices change often, so we link out instead of quoting them.
★Best for most cars
NOCOBoost Plus GB40
Best for: Most cars, kept in the glovebox
A 1000 A peak lithium jump starter rated for gas engines up to 6.0 L and diesel up to 3.0 L, at 2.45 lb with USB charging out.
What we like
- Smallest and lightest here
- Charges a phone by USB
- Spark-proof, reverse-polarity protection (per NOCO)
Watch out for
- Lowest engine rating here
- 1-year warranty
The GB40 lists 1000 A, gas up to 6.0 L and diesel up to 3.0 L, a 24 Wh battery and 2.45 lb.
★Best for trucks and diesels
NOCOBoost HD GB70
Best for: Trucks, SUVs and larger engines
A 2000 A peak lithium jump starter rated for gas engines up to 8.0 L and diesel up to 6.0 L, with a 56 Wh battery and 12 V output.
What we like
- Covers large gas and diesel engines
- 12 V output port
- 400-lumen light
Watch out for
- Heavier than the GB40
- 1-year warranty
The GB70 lists 2000 A, gas up to 8.0 L and diesel up to 6.0 L, a 56 Wh battery, a 12 V output and 4.18 lb.
Bottom line
Match the rating to your engine. See the wider field in best portable jump starters and the steps in how to use a jump starter.
Frequently asked questions
Is the GB70 worth it for a small car?
NOCO rates the GB40 for gas engines up to 6.0 L. If your car is under that, the GB40 covers it per NOCO.
Which one for a diesel truck?
NOCO rates the GB40 for diesel up to 3.0 L and the GB70 for diesel up to 6.0 L.
