NOCO Boost X GBX155: 4250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper…
NOCO
Best for
Best for trucks / SUVs (2000+ peak amps)
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Based on 1 trusted source
Current price
$369.95
Updated May 17, 2026 · 1 min read
Sources behind this verdict
10 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the reviewers we read, the GBX155 is the pick when 2000 amps isn't enough. Walmart verified-purchase reviewers cite it successfully jumping a Toyota Camry at 24°F after a competing Stanley unit failed, and Home Depot retailer reviews describe repeated successful starts on heavy vehicles. The manufacturer-cited 4250A rating covers gas engines up to 10.0L and diesels up to 8.0L, putting it in the heavy-duty / fleet range without crossing into the GB150/GB250 commercial price tier.
What reviewers liked
- 4250A rating handles full-size trucks and 8.0L diesels per manufacturer spec
- Walmart verified-purchase reviewers cite successful cold-weather starts where competing units failed
- USB-C Power Delivery in/out lets it double as a laptop power bank
- r/MechanicAdvice general NOCO endorsement applies
Where it falls short
- Lowest Amazon rating (4.2) among the NOCO models reviewed here
- r/batteries thread documents charging-wake-up failure when pack is deeply discharged
- Premium price near $370
- Heavier and bulkier than the GB40/GB70
Across the reviewers we read, the GBX155 is the pick when 2000 amps isn't enough. Walmart verified-purchase reviewers cite it successfully jumping a Toyota Camry at 24°F after a competing Stanley unit failed, and Home Depot retailer reviews describe repeated successful starts on heavy vehicles. The manufacturer-cited 4250A rating covers gas engines up to 10.0L and diesels up to 8.0L, putting it in the heavy-duty / fleet range without crossing into the GB150/GB250 commercial price tier. USB-C Power Delivery for recharging is called out across multiple YouTube reviewers in the data.
The disagreement is real: the GBX155's 4.2-star Amazon average across nearly 7,000 reviews is the lowest of any NOCO model in this pool, and an r/batteries thread specifically flags a scenario where the unit's internal charger refuses to wake a deeply discharged pack. r/MechanicAdvice still puts NOCO ahead of Chinese-brand alternatives on complaint rates, but buyers should know the GBX155 has a noticeably weaker retailer-rating signal than the GB70 or GB40.
- X FOR EXTREME — A new class of lithium jump starters. Rated at 4,250 amps for powerful starts on gas engines up to 10.0L and diesel engines up to 8.0L - built for extreme performance.
- ULTRASAFE 2.0 — Upgraded spark-proof and reverse polarity protection with enhanced thermal efficiency and power management for even safer operation and extended battery life.
- TURBO CHARGEABLE — Recharges in just 2.7 hours via USB-C Power Delivery, or gain enough power for a jump start in just 5 minutes - even from a completely depleted battery.
- 60-SECOND TIMER — Integrated 60-second timer conserves power from its high-voltage design - delivering up to 18 jump starts per charge with extreme energy at every start.
- CHARGE EVERYTHING — 60-watt USB-C Power Delivery lets you charge phones, tablets, laptops, and more. Dual-direction charging turns Boost X into a high-output portable power bank.
- INTEGRATED LED FLASHLIGHT — Precision-engineered 500-lumen LED with 7 light modes, including SOS and strobe. Illuminate repairs, emergencies, or low-light environments.
- WHAT’S IN THE BOX — GBX155 jump starter, heavy-duty clamps, USB-C charging cable, and microfiber storage bag. Backed by a 1-year warranty and engineered in the USA.
Strong jump start, plus built-in pump and light. It costs a bit more, but the all-in-one setup is super convenient.
The reviews on NOCO is better than most Chinese brands (and I have read hundreds sorted by newest first focussed on complaints. A number of ...
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“This Jump Starter Is a BEAST! NOCO Boost X GBX155 Review” · YouTube
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