WOLFBOX MegaVolt 16Air
For drivers who want one box for dead batteries and low tires, on cars, SUVs and gas pickups up to 8 liters. Good value for a combo unit.
Amazon $119.99$119.99
3.7/5
For drivers in hard-winter states with cars, SUVs or gas pickups up to a V8. The pre-heat is what you pay extra for over the Alpha 85.
- 8.5 L gas, 6 L dieselEngines
- 74 WhBattery
- YesOverride
- 2 yearsWarranty
Check price at Amazon$189.99
Price checked October 30, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Pre-heat lets it start engines down to -40 °F
- Starts V8 gas engines up to 8.5 L and 6 L diesels
- Force Start mode jumps a battery too flat to be detected
- Refills to 80% in about an hour with the included charger
Cons
- Costs about $70 more than the Alpha 85 without pre-heat
- Fast charging needs Hulkman’s own charger; a regular USB-C charger is much slower
- Phone charging tops out at 18 W
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its engine size. How we rank explains each one.
Specifications
| Model number | Alpha 85S |
|---|---|
| Starting | |
| Rated engines | 8.5 L gas, 6 L diesel |
| Peak amps (maker) | 2,000 A |
| Voltage | 12 V |
| Manual override | Yes |
| Lowest operating temperature | -40 °F |
| Battery and charging | |
| Chemistry | Lithium-ion |
| Capacity | 74 Wh |
| USB-C input | 65 W |
| Recharge time | 1.5 hours |
| USB outputs | USB-C 18 W, USB-A QC3.0 18 W |
| Build | |
| Flashlight | Yes |
| Air compressor | No |
| Water resistance | IP65 |
| Dimensions | 9.06 x 4.06 x 1.77 in |
| Warranty | 2 years |
| Released | 2020-09 |
Alternatives in this engine size
TOPDON JumpSurge 2000Pro
A mid-size pack with a boost mode for cars, SUVs and gas pickups up to 8 liters. Good if you want a protective case and a trusted brand, but it recharges slowly.
Amazon $84.99$84.99
Hulkman Alpha Pro 1500A
#11 in Trucks and V8sFull review
A good-value pack for cars, SUVs and light pickups up to 7.5 liters that recharges quickly from an ordinary laptop charger. Check the Alpha 85S if you need cold-weather starts.
Amazon $99.99$99.99
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