Last updated September 14, 2026
WOLFBOX MegaVolt24 (MV24) Review
A 4,000A, 10.0L-gas/10.0L-diesel jump starter with 65W USB-C charging for less than half the price of NOCO's comparably rated GBX155 — the newer brand that independent testers keep ranking first.
The verdict
WOLFBOX isn't a name with NOCO's or Clore's track record, but the MegaVolt24 has earned real, repeated praise from independent testers: TechGearLab named it a top overall pick, and reviewers at Men's Journal and Pro Tool Reviews report first-try cold starts and wide, confident clamps. On paper it matches the GBX155's diesel-truck engine coverage at under a third of the price, backed by an 88.8Wh cell and a 24-month warranty. The catch is brand history — NOCO's reputation was built over a decade of owner data, and WOLFBOX's wasn't — so treat this as the value pick for a big engine, not an automatic replacement for the established name.
Typical price: ~$110 (typical street price — current price shown on Amazon)
Buy on AmazonWhat we like
- +4,000A rating covers gas and diesel engines up to 10.0L each — matches the GBX155's diesel-truck ceiling at well under a third of the price
- +88.8Wh (24,000mAh) battery doubles as a substantial power bank on top of jump-starting duty
- +65W USB-C fast charging: full recharge in under two hours
- +10 layers of protection including spark-proof and reverse-polarity-proof clamps; testers describe the clamps as wide-biting and resistant to bending
- +24-month warranty — twice the length NOCO and most competitors offer
What to know
- −A much newer brand than NOCO or Clore, with a few years of reviews rather than a decade of owner data
- −4,000A peak is still below the GBX155's 4,250A rating, so it's a value alternative, not a strict upgrade
- −Rated to -4°F to 140°F on the low end — no better than NOCO's line in deep cold, despite the higher top-end rating
- −Sold under a near-identical name across several bundle variants (with air compressor, in colors) — verify the plain MV24 listing before buying
Full review
The jump-starter market has largely been NOCO's to lose for the better part of a decade, which makes it notable when independent testers put a newer brand at the top of a ranking. TechGearLab named the WOLFBOX MegaVolt24 its top overall pick for 2026, and reviews at Men's Journal and Pro Tool Reviews back that up with specifics rather than marketing copy: one reviewer put ten to twelve jump starts on a single charge and still had over 60% of the battery left; another reported the pack starting a truck on the first try on a cold racetrack morning.
The spec sheet explains some of the appeal. A 4,000A rating with a 10.0L gas and 10.0L diesel ceiling matches NOCO's GBX155 on paper for engine coverage, and the 88.8Wh cell is bigger than anything else in this guide except the Hulkman Alpha85S. Sixty-five watts of USB-C charging brings a flat pack back in under two hours, and testers consistently describe the clamps as wide-biting and unlikely to bend or fold — a detail that matters more than it sounds on a big diesel's buried terminal.
The honest caveat is brand history, not engineering. WOLFBOX's clamp electronics, cell sourcing, and long-term reliability haven't been proven over the years of real-world use that NOCO's have, and its 4,000A figure is a manufacturer rating on the same honor system as everyone else's. It's also worth being careful shopping for it: WOLFBOX sells near-identical listings bundled with air compressors and in different colors, so confirm you're buying the plain MV24 if that's the spec you want. For a big gas or diesel engine and a price close to a GOOLOO GP4000, though, the MegaVolt24 is the newer pack worth a look.
Best for: Owners of full-size trucks, diesels, and RVs who want GBX155-class engine coverage without the GBX155's price, and are comfortable with a newer brand.
Specifications
| Peak amps | 4,000A |
|---|---|
| Engine rating | Gas up to 10.0L / diesel up to 10.0L |
| Battery | 88.8Wh (24,000mAh) lithium-ion, 12V systems only |
| Ports | USB-C PD 65W in/out |
| Safety | 10-layer protection incl. spark-proof, reverse polarity |
| Operating temp | -4°F to 140°F (manufacturer) |
| Recharge | Under 2 hours at 65W USB-C |
| Weight | ~3.42 lb |
| Dimensions | 9.39 x 5.28 x 2.16 in |
| Warranty | 24 months |
Ready to get one?
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~$110 typical price
Buy on AmazonAlternatives in Jump Starters
Best Overall
NOCO Boost HD GB70
2,000 amps, rated for V8 gas and 6.0L diesel, with the safest clamps in the business — the one jump starter that covers almost every driveway.
Premium Pick
NOCO Boost X GBX155
4,250 amps for big diesels, plow trucks, and RVs — with 65W USB-C charging that makes it a serious power bank too.
NOCO Boost X GBX45
The GB40's newer-generation sibling — 1,250A, a 6.5L gas / 4.0L diesel rating, and 60W USB-C that recharges the pack in under an hour.