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NOCO Boost Plus GB40 Review (2026): Worth It?

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Researched: specs, expert tests and owner reviews How we evaluate

Quick answer

For most cars and small SUVs, yes. The GB40 is compact, spark-proof and owners report it holds a charge for months in the glove box. Skip it if you drive a big diesel truck; step up to a larger NOCO.

By Buyzello Editorial Team 1 min read

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Illustration of jump starters (not a photo of this product)

Illustration, not a photo of this exact model

Our verdict on the NOCO Boost Plus GB40

Buy it if
You drive a typical gas car or small SUV and want a compact, safe jump starter in the glove box.
Skip it if
You drive a big diesel truck; you need a larger model.
Best for
Most cars
Key feature
Compact lithium jump starter with spark-proof clamps
Typical price
$90–$110
Check price at Amazon Paid link

Key specifications

Peak current1,000 A
EnginesUp to 6.0L gas, 3.0L diesel
BatteryLithium-ion

Who should buy it, and who should skip it

A good fit if you

  • drive a typical gas car or small SUV
  • want a glove-box jump starter
  • want simple, safe hookups

Skip it if you

  • drive a large diesel truck
  • want a garage booster

Pros and cons

Pros

  • Spark-proof, reverse-polarity protection
  • Small enough for a glove box
  • Charges phones and has an LED light

Cons

  • Not for large diesels
  • Recharge it every few months

What it is

The NOCO Boost Plus GB40 is a compact lithium jump starter rated at 1,000 peak amps. NOCO rates it for gas engines up to 6.0 liters and diesels up to 3.0 liters, which covers most sedans, crossovers and many pickups. It also has a USB port for phones and a built-in LED light.

What we like

  • Spark-proof clamps and reverse-polarity protection
    – Small enough for a glove box or door pocket
    – Holds a charge for months, according to owner reports
    – Doubles as a phone charger and flashlight

What to know

  • Not rated for large diesel engines
    – Charges by micro-USB, which feels dated
    – Recharge it every few months and after each jump
    – Avoid leaving it on a dashboard in summer heat

Is it worth it?

Based on specs, warranty and years of owner feedback, the GB40 is the easiest jump starter to recommend for everyday drivers. It costs about the same as a tow call, lives in the glove box and turns a dead battery into a five-minute fix. Truck owners should pay a little more for the GBX45.

Alternatives worth considering

Frequently asked questions

Is the NOCO Boost Plus GB40 worth it?

For most cars and small SUVs, yes. The GB40 is compact, spark-proof and owners report it holds a charge for months in the glove box. Skip it if you drive a big diesel truck; step up to a larger NOCO.

Who should skip it?

If you drive a large diesel truck, an alternative will suit you better.

How many jumps does the GB40 give per charge?

NOCO rates it for up to 20 jumps on a full charge, depending on engine size and conditions.

Buyzello Editorial Team

Part of the Buyzello research team. We compare specifications, documentation and real-world trade-offs so you can decide faster.

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NOCO Boost Plus GB40 review: our verdict in brief

Is the NOCO Boost Plus GB40 worth it? For most cars and small SUVs, yes. The GB40 is compact, spark-proof and owners report it holds a charge for months in the glove box. Skip it if you drive a big diesel truck; step up to a larger NOCO.

The NOCO Boost Plus GB40 stands out for compact lithium jump starter with spark-proof clamps. It is best for most cars, and its strengths include spark-proof, reverse-polarity protection, small enough for a glove box and charges phones and has an LED light. The drawbacks to weigh are not for large diesels and recharge it every few months.

Who should buy the NOCO Boost Plus GB40? It suits you if you drive a typical gas car or small SUV, want a glove-box jump starter and want simple, safe hookups. Who should skip it? Look elsewhere if you drive a large diesel truck and want a garage booster.

Alternatives worth a look: the NOCO Boost X GBX45 ($130–$160) is best for trucks and bigger SUVs. the GOOLOO GP4000 Jump Starter ($90–$130) is best for value for big engines. the Clore Automotive Jump-N-Carry JNC660 ($140–$190) is best for garages and shops.

Key specifications: Peak current: 1,000 A; Engines: Up to 6.0L gas, 3.0L diesel; Battery: Lithium-ion. Typical price: $90–$110. Prices change often, so check the current price before you buy.

Match the engine rating, not peak amps: makers list the gas and diesel engine sizes each model handles. Look for spark-proof clamps and reverse-polarity protection. Lithium packs hold charge for months; lead-acid boosters need regular top-ups.

Use the engine-size rating instead. Peak amps are measured differently by each maker. A GB40-class unit covers most four- and six-cylinder cars. Lithium packs dislike extreme heat. Check the storage range in the manual, and bring it inside during heat waves.

Jump starters are frequent Prime Day and Black Friday deals, and they make good holiday gifts. Register NOCO products for warranty support and keep the receipt.

Across the jump starters we cover, typical prices run from $90 to $190. Store prices change often, so treat these as typical ranges and check the current price before you buy.

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