NOCO GB40 vs WOLFBOX MegaVolt16 Air (MV16A)
WOLFBOX MegaVolt16 Air (MV16A)
The short answer
WOLFBOX MegaVolt16 Air (MV16A) comes out ahead overall with 7.5/10 against 5.9/10 for the NOCO GB40. NOCO GB40 is stronger on build quality & durability. WOLFBOX MegaVolt16 Air (MV16A) is stronger on starting power, battery capacity & standby, ease of use & safety features, versatility and value. At current verified prices, the NOCO GB40 costs about $20.04 less.
- Choose the NOCO GB40 if: Owners of typical cars and small SUVs (up to 6.0L gas) who want a small, IP65 weatherproof pack sold and shipped by Amazon.
- Choose the WOLFBOX MegaVolt16 Air (MV16A) if: Drivers who want one portable device for both dead batteries and low tires.
Scores by criterion
| Criterion | NOCO GB40 | WOLFBOX MegaVolt16 Air (MV16A) |
|---|---|---|
| Starting Power | 6.5Fine for typical cars; needed the override on a dead battery; 6L gas/3L diesel limit. | 7.8Passed the 3x rapid-start test at 33°F; the only cold-condition lab result among the picks. |
| Battery Capacity & Standby | 4.015.57 Wh measured of 24 Wh claimed; one jump took it to 25%. | 6.851.3 Wh measured of 59.2 Wh claimed. |
| Ease of Use & Safety Features | 6.06-inch leads and stiff clamps; simple controls; spark-proof. | 6.5Small battery bar; boost button sits on the cable plug; short hose and stubby clamps. |
| Build Quality & Durability | 7.8IP65 with a long track record; soft bag only. | 7.0IP64; 5.3 lb. |
| Versatility | 4.510W USB and a light only. | 9.0160 PSI compressor, 65W USB-C and a light. |
| Battery Safety & Sustainability | 6.0No sparks seen in testing; Prop 65 notice; no UL 2743 confirmed. | 6.0Lithium-ion; no certification listed; no recalls found. |
| Value | 6.0$99.95 is high for its capacity. | 8.2$119.99 for a jump starter and inflator in one. |
Specifications
| Spec | NOCO GB40 | WOLFBOX MegaVolt16 Air (MV16A) |
|---|---|---|
| Peak Current | 1,000 A | 3,000 A |
| Max Gas Engine (rated) | 6 L | 8 L |
| Max Diesel Engine (rated) | 3 L | 6 L |
| Battery Chemistry | Lithium-ion | Lithium-ion |
| Rated Capacity | 24 Wh | 59.2 Wh |
| Measured Usable Capacity (TechGearLab) | 15.57 Wh | 51.3 Wh |
| Weight | 2.4 lb | 5.3 lb |
| Built-in Air Compressor | No | Yes |
| Compressor Max Pressure | — | 160 PSI |
| Max USB Output | 10 W | 65 W |
| Water/Dust Rating | IP65 | IP64 |
NOCO GB40
Pros
- IP65 water and dust resistance
- Compact at 2.4 lb
- Spark-proof and reverse-polarity protection
- Recommended by four major test outlets
- Sold by Amazon
Cons
- Small usable battery: 15.57 Wh measured
- Very short leads (about 6 in.), so the pack must sit on the battery
- Slow 10W USB-C and about 3 hours to recharge
- Soft bag rather than a hard case
A dependable weatherproof pack for typical cars and small SUVs. It ranks last on our weighted score because of its small battery, but it suits owners who value size and weather resistance. If you order one, check that the port is USB-C.
Full NOCO GB40 review →WOLFBOX MegaVolt16 Air (MV16A)
Pros
- Jump starter and tire inflator in one
- Passed the 3x rapid-start test at 33°F
- 160 PSI compressor with auto shutoff
- 65W USB-C
- Far lighter than lead-acid combo units
Cons
- Small battery bar on the LCD; the boost button and light sit on the cable plug
- Short air hose and stubby clamps can be awkward to position
- Charging adapter not included
- Lower engine rating than the MV24
A convenient choice for commuters and road-trippers who want one device in the trunk for both common roadside problems.
Full WOLFBOX MegaVolt16 Air (MV16A) review →Both products are part of our guide The Best Jump Starters of 2026, where you can see every pick, how we score and current prices from each retailer.