GOOLOO GT4000S vs NOCO GBX155
The short answer
NOCO GBX155 comes out ahead overall with 7.8/10 against 7.3/10 for the GOOLOO GT4000S. GOOLOO GT4000S is stronger on ease of use & safety features and value. NOCO GBX155 is stronger on starting power, battery capacity & standby, build quality & durability and battery safety & sustainability. At current verified prices, the GOOLOO GT4000S costs about $269.99 less.
- Choose the GOOLOO GT4000S if: Diesel pickup owners on a budget who want a light 4,000A pack and can keep it topped up and warm.
- Choose the NOCO GBX155 if: Owners of 3/4- and 1-ton diesel pickups or big gas V8s who want the best-tested lithium power and can store the pack somewhere warm.
Scores by criterion
| Criterion | GOOLOO GT4000S | NOCO GBX155 |
|---|---|---|
| Starting Power | 7.54,000A; Outdoor Life recommends it for 3/4-ton diesels; diesel rating conflicts between 8L and 10L | 9.34250A; best results in TechGearLab's test. |
| Battery Capacity & Standby | 6.0No published or measured Wh; -4°F floor; 3-month top-up advised | 9.086.1 Wh measured, the most usable energy in the pool. |
| Ease of Use & Safety Features | 7.5SuperSafe protections, PopSci's Best design, 2.3 lb | 7.0Buttons and indicators are less clear than rivals' (TechGearLab). |
| Build Quality & Durability | 6.5IP65; some anecdotal reports of units that stopped charging | 7.5Solid build but 5.8 lb, no case, no IP rating confirmed. |
| Versatility | 7.5100W two-way USB-C PD | 7.560W USB-C PD; no compressor. |
| Battery Safety & Sustainability | 5.0Li-polymer; no certifications named on the product page | 6.0Spark-proof and reverse-polarity protection; 99 Wh; no UL 2743 confirmed. |
| Value | 8.8About $100 for a diesel-capable pack recommended by independent outlets | 5.5About $370, roughly 3x the MV24's price. |
Specifications
| Spec | GOOLOO GT4000S | NOCO GBX155 |
|---|---|---|
| Peak Current | 4,000 A | 4,250 A |
| Max Gas Engine (rated) | — | 10 L |
| Max Diesel Engine (rated) | — | 8 L |
| Battery Chemistry | Lithium polymer | Lithium-ion |
| Rated Capacity | — | 99 Wh |
| Measured Usable Capacity (TechGearLab) | — | 86.1 Wh |
| Weight | 2.3 lb | 5.8 lb |
| Built-in Air Compressor | No | No |
| Max USB Output | 100 W | 60 W |
| Water/Dust Rating | IP65 | IP65 (ports closed) |
| Min Operating Temperature (rated) | -4 °F | -4 °F |
| Automatic Cell Preheat for Extreme Cold | No | No |
GOOLOO GT4000S
Pros
- Very low price for 4,000A
- Light at 2.3 lb
- IP65
- 100W USB-C power delivery
- Outdoor Life's pick for diesel trucks
Cons
- Conflicting engine ratings on the maker's page
- No Wh figure or certifications published
- FAQ advises recharging every 3 months
- Some owners report units that stopped charging
A sensible budget pick for diesel pickups if you keep it topped up and warm. It trades documentation and certainty for price.
Full GOOLOO GT4000S review →NOCO GBX155
Pros
- Highest-scoring unit in TechGearLab's test
- Rated for 10L gas and 8L diesel
- 86.1 Wh measured usable battery
- Spark-proof and reverse-polarity protection
- Sold directly by Amazon
Cons
- Premium price
- Heavy at 5.8 lb, with no storage case
- Buttons and indicators are less clear than rivals'
- No air compressor
The pick for owners of large diesels and fleet vehicles who value proven power over price. Most drivers get more for their money elsewhere.
Full NOCO GBX155 review →Both products are part of our guide The Best Jump Starters for Cold Weather & Diesel Trucks of 2026, where you can see every pick, how we score and current prices from each retailer.