GOOLOO GT4000S vs WOLFBOX MV24A (MegaVolt 24Air)
WOLFBOX MV24A (MegaVolt 24Air)
The short answer
WOLFBOX MV24A (MegaVolt 24Air) comes out ahead overall with 7.5/10 against 7.3/10 for the GOOLOO GT4000S. GOOLOO GT4000S is stronger on ease of use & safety features and value. WOLFBOX MV24A (MegaVolt 24Air) is stronger on battery capacity & standby, build quality & durability, versatility and battery safety & sustainability. At current verified prices, the GOOLOO GT4000S costs about $40.03 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 WOLFBOX MV24A (MegaVolt 24Air) if: Truck owners in cold regions with half-ton pickups or diesels up to about 6L who also want tire air.
Scores by criterion
| Criterion | GOOLOO GT4000S | WOLFBOX MV24A (MegaVolt 24Air) |
|---|---|---|
| Starting Power | 7.54,000A; Outdoor Life recommends it for 3/4-ton diesels; diesel rating conflicts between 8L and 10L | 7.54,000A and a real diesel F-350 start (PopSci), but officially rated for only 6L diesel |
| Battery Capacity & Standby | 6.0No published or measured Wh; -4°F floor; 3-month top-up advised | 7.588.8 Wh (rated); worked at 0°F in PopSci's real-world use |
| Ease of Use & Safety Features | 7.5SuperSafe protections, PopSci's Best design, 2.3 lb | 7.0Good protections and display; no charging adapter included; short hose |
| Build Quality & Durability | 6.5IP65; some anecdotal reports of units that stopped charging | 7.0IP64; 2-year warranty per manufacturer |
| Versatility | 7.5100W two-way USB-C PD | 8.5160 PSI inflator, 65W USB and a light |
| Battery Safety & Sustainability | 5.0Li-polymer; no certifications named on the product page | 6.5Manufacturer states UL 2743 and UN38.3 (unverified) |
| Value | 8.8About $100 for a diesel-capable pack recommended by independent outlets | 8.0$140 for a pack and compressor with independent cold and diesel use |
Specifications
| Spec | GOOLOO GT4000S | WOLFBOX MV24A (MegaVolt 24Air) |
|---|---|---|
| Peak Current | 4,000 A | 4,000 A |
| Max Gas Engine (rated) | — | 10 L |
| Max Diesel Engine (rated) | — | 6 L |
| Battery Chemistry | Lithium polymer | Lithium (cell type not stated) |
| Rated Capacity | — | 88.8 Wh |
| Weight | 2.3 lb | 5.3 lb |
| Built-in Air Compressor | No | Yes |
| Compressor Max Pressure | — | 160 PSI |
| Max USB Output | 100 W | 65 W |
| Water/Dust Rating | IP65 | IP64 |
| UL 2743 Stated by Manufacturer | — | Yes |
| 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 →WOLFBOX MV24A (MegaVolt 24Air)
Pros
- Documented use at 0°F
- Built-in 160 PSI inflator
- 4,000A and 88.8 Wh
- Moderate price for the power
- Manufacturer states UL 2743 and a 2-year warranty
Cons
- Official diesel rating is only 6L
- Charging adapter not included in the Amazon listing
- Inflator hose can be short for large wheels
- Rated operating floor is -4°F
The best all-in-one for half-ton pickups and cold-region owners with moderate diesels. It sits a hair below the NOCO on score, and the order is close to a tie.
Full WOLFBOX MV24A (MegaVolt 24Air) 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.