Jump StartersNOCO

NOCO Boost GB40 1000A UltraSafe Lithium Jump Starter

By Lee · Researched & cited, not personally tested · Updated Sep 2026

Typical price · Sep 2026: $80-100
Best for: Any commuter, new driver, or owner of a typical sedan or small SUV.
Key spec: 1000A peak; up to 6.0L gas / 3.0L diesel; ~20 jumps per charge
Skip it if: Owners of large trucks, big SUVs, or diesels over 3.0L — the GB40 is rated only up to 6.0L gas / 3.0L diesel and can come up short of cranking amps on a big engine; step up to the GB70.

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Typical price · as of Sep 2026

$80-100

Approx.

Key spec

1000A peak; up to 6.0L gas / 3.0L diesel; ~20 jumps per charge

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Opens the exact product on Amazon — confirm the model and current price there.

Compact 1000A 12V lithium jump starter that lets a driver jump their own dead battery with no second car; the category benchmark.

Quick verdict

The default best-overall. Trusted for honest (not inflated) amp ratings, UltraSafe spark-proof + reverse-polarity protection, and a genuinely pocketable size — the unit everything else is compared against.

Best for Any commuter, new driver, or owner of a typical sedan or small SUV.

What earns it the pick

1000A peak
up to 6.0L gas
3.0L diesel
~20 jumps per charge

The honest catch

What we’d want you to know before you buy.

Rated up to 6.0L gas / 3.0L diesel — fine for most cars but underpowered for big trucks and large diesels.
For a large truck, van, or diesel, step up to the GB70 instead.

What to check when buying

Rated up to 6.0L gas / 3.0L diesel — fine for most cars but underpowered for big trucks/diesels (step up to the GB70).

How it compares

You're viewing

NOCO Boost GB40 1000A UltraSafe Lithium Jump Starter

Price band: $80-100
Key spec: 1000A peak; up to 6.0L gas / 3.0L diesel; ~20 jumps per charge
Verdict: The default best-overall. Trusted for honest (not inflated) amp ratings, UltraSafe spark-proof + reverse-polarity protection, and a genuinely pocketable size — the unit everything else is compared against.

AlternativePricier

NOCO Boost HD GB70 2000A UltraSafe Lithium Jump Starter

Price band: $150-180
Key spec: 2000A peak; up to 8.0L gas / 6.0L diesel; ~40 jumps per charge
Verdict: The heavy-duty pick — doubles the GB40's output for trucks, vans, boats and diesels while keeping NOCO's safety pedigree. What serious truck/RV owners buy.

See its case →

AlternativePricier

Hulkman Alpha85 2000A Smart Jump Starter with LCD Display

Price band: $100-130
Key spec: 2000A peak; 20000mAh/74Wh; up to 8.5L gas / 6.0L diesel; 3.3in LCD
Verdict: The premium smart pick — the LCD shows exact battery %, voltage and jump readiness (no guessing at LED dots), plus fast 65W USB-C recharge and a strong review record.

See its case →

	You're viewing NOCO Boost GB40 1000A UltraSafe Lithium Jump Starter	AlternativePricier NOCO Boost HD GB70 2000A UltraSafe Lithium Jump Starter	AlternativePricier Hulkman Alpha85 2000A Smart Jump Starter with LCD Display
Price band	$80-100	$150-180	$100-130
Key spec	1000A peak; up to 6.0L gas / 3.0L diesel; ~20 jumps per charge	2000A peak; up to 8.0L gas / 6.0L diesel; ~40 jumps per charge	2000A peak; 20000mAh/74Wh; up to 8.5L gas / 6.0L diesel; 3.3in LCD
Verdict	The default best-overall. Trusted for honest (not inflated) amp ratings, UltraSafe spark-proof + reverse-polarity protection, and a genuinely pocketable size — the unit everything else is compared against.	The heavy-duty pick — doubles the GB40's output for trucks, vans, boats and diesels while keeping NOCO's safety pedigree. What serious truck/RV owners buy.	The premium smart pick — the LCD shows exact battery %, voltage and jump readiness (no guessing at LED dots), plus fast 65W USB-C recharge and a strong review record.
	This page	See its case →	See its case →

Same category, ranked by our research priority. Specs and price bands are approximate — confirm the current price on Amazon.

The honest backbone

The Decision Receipt

Why it's here: The default best-overall. Trusted for honest (not inflated) amp ratings, UltraSafe spark-proof + reverse-polarity protection, and a genuinely pocketable size — the unit everything else is compared against.
Who should buy it: Any commuter, new driver, or owner of a typical sedan or small SUV.
Who should skip it: Owners of large trucks, big SUVs, or diesels over 3.0L — the GB40 is rated only up to 6.0L gas / 3.0L diesel and can come up short of cranking amps on a big engine; step up to the GB70.
The main tradeoff: You accept the lowest cranking headroom in this lineup (1000A) in exchange for the smallest, genuinely pocketable body.
What could change this: If your vehicle is a truck, van, or diesel, the NOCO GB70 is the honest pick; and since the GB40 is frequently discounted, verify its current price against the GOOLOO GP2000, which packs more rated amps into a similar budget.

Built from the live Amazon listing, manufacturer specs, and owner-review patterns — not personally lab-tested. Prices are approximate; confirm the current price on Amazon.

What owners actually report

Aggregated from real verified-buyer reviews and long-term owner reports — not our own hands-on test. Basis: a very large body of Amazon owner reviews (Amazon's #1 automotive best-seller), plus recurring cold-weather threads on Reddit and owner forums.

~15–20 gas starts

Jumps per charge

−4°F to 122°F (NOCO)

Rated operating range

At least every 4–6 mo (NOCO)

Recharge cadence

What breaks, and when

Weak or dead in real cold. In one owner thread, two GB40s would not start a truck at 10°F, and one cranked only weakly after a night at 0–5°F until warmed under a coat; other owners there report NOCO packs starting in single digits. NOCO rates Boost packs to operate from −4°F.
Self-drains if left unattended. Like any lithium pack it self-discharges in storage: NOCO says Boost packs hold about 70% for up to a year and recommends charging at least every 4–6 months.
Cell swelling with age. Occasional but repeated reports of the battery swelling or dropping fast under load after a couple of years — sometimes just outside the ~1-year warranty.

Longevity

With monthly top-ups and indoor storage, many owners get 3–5 years. The usual long-term failure is the lithium cell degrading — swelling or no longer holding charge — accelerated by cold storage and letting it fully drain.

What owners praise

Genuinely pocketableSpark-proof, reverse-polarity safeStarts most gas engines in mild temps

Owner evidence, cited:garagejournal.com techgearlab.com carxplorer.com no.coLast reviewed Sep 2026