Screenshot of the NOCO product page (source). Not our photo.
NOCO · Jump Starters
NOCO Boost X GBX155 review: 3.9/5 from the spec sheet
4250 A heavy-duty lithium jump starter for gas engines up to 10.0 L and diesels up to 8.0 L, with 60 W USB-C PD and a 500-lumen flashlight.
Fits: 12 V lead-acid batteries only; no 12 V DC output port; 60 W USB-C PD charger required for fast recharge
View on AmazonASIN B08WZFPXFM
average of 5 criteria
Score is calculated from the manufacturer's published specifications. BaniCar has not handled this unit. Specs and availability change — verify on the listing.
Safety note: Jump starters deal with high current. Follow the manufacturer's clamp order and engine-size limits; check the manual before use.
Verdict
If you run a diesel pickup, a boat or a fleet, this is the spec-sheet leader and NOCO's safety design is the reason to pay for it. Sedan owners are carrying 5.8 lb and $370 they do not need.
Pros & cons
Pros
- 4250 A peak and a 99 Wh pack for big diesels
- 60 W USB-C PD charges the unit and powers laptops
- 500-lumen flashlight with strobe and SOS
- IP65 and a published -4°F to 122°F operating range
Cons
- 5.82 lb and 12 inches long — a trunk tool, not a glovebox tool
- 1-year warranty is short for the price
- No 12 V DC output
- 60 W PD charger is not included; charging at 2.5 W takes about 64 hours
Best for
- Diesel truck, RV and boat owners
- Shops and fleets that jump big engines regularly
Specifications (as published by NOCO)
| Peak amps | 4250 A |
|---|---|
| Battery | 99 Wh lithium-ion |
| Engine size | Gas up to 10.0 L / diesel up to 8.0 L (12 V lead-acid batteries only) |
| USB c | USB-C PD 3.0 in/out, up to 20 V 3 A (60 W); full recharge about 2.7 h at 60 W (about 64 h at 2.5 W) |
| USB a | 5 V 2.1 A (10 W) |
| Flashlight | 500 lumens with strobe and SOS |
| Safety | UltraSafe 2.0 spark-proof + reverse-polarity protection; starts batteries down to about 3 V, manual override below that |
| IP rating | IP65 (port covers closed) |
| Operating temperature | -4°F to 122°F (-20°C to 50°C); charging 32°F to 104°F (0°C to 40°C) |
| Weight | 5.82 lb (2.64 kg) |
| Dimensions | 12.03 × 6.89 × 2.72 in |
| Warranty | 1-year limited |
Key specs: 4250 A · 99 Wh · 10 L gas / 8 L diesel · 60 W USB-C PD · 500-lm light · 5.82 lb
Frequently asked questions
Will the GBX155 start a 6.7 L Power Stroke or Cummins?
NOCO rates it for diesel engines up to 8.0 L, so both are inside the rating. Battery condition and temperature still matter.
Can it jump a frozen battery?
No. NOCO's user guide warns: do not attempt to jump start a damaged or frozen battery, and use only on 12 V lead-acid batteries.
How low can the dead battery be?
NOCO says it will detect and start batteries down to about 3 V. Below that you can use manual override, which disables the safety protections, so check polarity carefully.
Compare with
Product video
“How to Recharge your NOCO GBX155” — NOCO on YouTube (official channel). Embedded, not hosted by us; the video is the manufacturer's marketing, not our test.
Opens Amazon.com in a new tab. Amazon price and availability are not shown here.
Sources
- NOCO GBX155 product page (accessed Oct 16, 2026)
- NOCO GBX155 specifications (accessed Oct 16, 2026)
- NOCO GBX155 user guide (PDF) (accessed Oct 16, 2026)
- Amazon listing (ASIN only) (accessed Oct 16, 2026)
- NOCO product page
Evidence type: published specs (no hands-on). Last updated Oct 16, 2026.