Portable Jump Starters · Rank #4 of 6
NOCO Boost GB40 — 1000A UltraSafe
NOCO Boost GB40 — 1000A UltraSafe is editorial rank #4 in its category. The glovebox standard for regular cars: NOCO rates its 1000A for gas engines up to 6.0L and diesels up to 3.0L, with the same spark-proof clamps as the pricier NOCO units. Skip it only if you run a large V8 or diesel that wants more amps.
Evidence and listing status updated Oct 22, 2026. Availability is a checked signal, not a permanent guarantee.
Who is NOCO Boost GB40 for?
NOCO rates its 1000A for engines up to 6.0L gas and 3.0L diesel
Who should skip it?
1000A is marginal on large V8s and most diesels
$99.95★4.6 (130,109 ratings)Depends oncheck engine size — rated to ~6L gas / 3L diesel
Key compromise
100-lumen light is dim next to the GB70's 400 lumens
Closest cheaper option
This is already the lowest-priced active pick.
Approx. $99.95. Retailer price checked today. As an Amazon Associate we earn from qualifying purchases.
79
Grade B+ · ranked #4 in category.
Scored on 6 public criteria, weighted 55% category-specific, 25% owner satisfaction, 20% value.
Evidence coverage: Moderate (75%). Missing inputs reduce coverage rather than being treated as poor performance.
Scored on 6 public criteria, weighted 55% category-specific, 25% owner satisfaction, 20% value.
Evidence coverage: Moderate (75%). Missing inputs reduce coverage rather than being treated as poor performance.
Cranking Power
89
Capacity & Charging
74
Safety Features
80
Build Quality
74
Value
74
Owner Satisfaction
81
$99.95★4.6 (130,109 ratings)Depends oncheck engine size — rated to ~6L gas / 3L diesel
Approx. $99.95 · Price checked Oct 22, 2026 · As an Amazon Associate we earn from qualifying purchases.
OUR VERDICT
The glovebox standard for regular cars: NOCO rates its 1000A for gas engines up to 6.0L and diesels up to 3.0L, with the same spark-proof clamps as the pricier NOCO units. Skip it only if you run a large V8 or diesel that wants more amps.
WHAT IT GETS RIGHT
NOCO rates its 1000A for engines up to 6.0L gas and 3.0L diesel
2.5 lb (NOCO-stated), compact enough to live in a glovebox or door pocket
Same spark-proof / reverse-polarity safety as higher NOCO models
KNOW BEFORE YOU BUY
1000A is marginal on large V8s and most diesels
100-lumen light is dim next to the GB70's 400 lumens
Peak Amps
1000A
Engine Rating
Up to 6.0L gas / 3.0L diesel (NOCO-stated)
Starts per Charge
Up to 20 (NOCO-stated)
Recharge
About 3 hours (NOCO-stated)
What do buyers say about NOCO Boost GB40?
22,027 buyer mentionsBuyers praise functionality, quality, ease of use and compact size. Mixed feedback on battery life.
↑ Functionality↑ Quality↑ Ease Of Use↑ Compact Size↕ Battery Life
What evidence supports this review?
| Visible claim | Evidence basis | Checked |
|---|---|---|
| Verdict, pros and tradeoffs | DriveScored editorial synthesis of the stored specifications, fitment notes and aggregated owner signal. Research-based; not a hands-on test. | Oct 22, 2026 |
| Specifications and fitment | Structured manufacturer or retailer listing fields retained in this product record. A missing field stays undeclared rather than being inferred. | Oct 22, 2026 |
| Price and listing availability | Amazon listing status and price snapshot. Availability can change after the check, so the retailer page remains the final source. | Oct 22, 2026 |
| Buyer praise and concerns | Aspect-level summary across 22,027 buyer-review mentions. No review text is quoted or presented as DriveScored testing. | Not separately dated |
What are the closest alternatives?
…GET THE WINNER · Hulkman Alpha85 — $199.99 · 86
Buy on AmazonThe all-rounder for people who want the pack to double as a laptop or phone bank: Hulkman rates the Alpha85's 2000A for gas engines up to 8.5L and diesels up to 6.0L, and its 65W USB-C PD charges in and out. The 3.3-inch screen reports exact charge and fault state rather than making you guess at LED bars.
…SPEND LESS · GOOLOO GP4000 — $119.99 · 85
Buy on AmazonThe high-amp budget option: 4000A peak rated for all gas engines and diesels up to 10.0L, with SuperSafe clamp protection and a big enough cell to work as a dual-USB power bank. Note this is the GP model — GOOLOO's pricier GT4000S is the one with 100W two-way USB-C, which this does not have.
…SPEND MORE (+$200) · NOCO Boost GB150 — $299.95 · 74
Buy on AmazonThe step up from the GB70 when you are starting a big diesel — NOCO rates it 3000A against the GB70's 2000A, for engines up to 9.0L gas and 7.0L diesel.
…CONSIDER · AVAPOW A68 — $149.99 · 70
Buy on AmazonThe headroom option for big trucks and diesels: AVAPOW rates the A68 at 6000A peak and up to a 12L diesel, with an eight-layer clamp protection system and indicator lights that make a wrong connection hard to complete. It also works as a dual-USB power bank with a 3-mode LED light. Overkill for a commuter car, right-sized if you regularly start large diesel powerplants.
…CONSIDER · NOCO Boost GB70 — $194.99 · 75
Buy on AmazonThe GB70 is the step up to 2000A: spark-proof, reverse-polarity-protected output that NOCO rates for engines up to 8.0L gas and 6.0L diesel, backed by 30,000+ owner ratings. You pay for the amp headroom; the smaller GB40 is the same UltraSafe system for about half the money if your engine doesn't need 2000A. Researched, not tested.
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