WOLFBOX MegaVolt24 4000A Jump Starter (88.8Wh, 65W USB-C)

Jump Starters

WOLFBOX MegaVolt24 (MV24)

Name: WOLFBOX MegaVolt24 (MV24)
Brand: WOLFBOX

#1 · Best Overall

8.1 /10 Our score

Lowest verified price $119.99 Amazon

Our verdict

The best balance of power, capacity and price for most drivers, from compact cars to V8 pickups. Confirm the exact 88.8 Wh variant when you order.

Pros

Started a fully drained SUV three times in a row
82.3 Wh usable battery, close to the 88.8 Wh claim
65W USB-C can charge a laptop
IP64 rating and a storage case included
Light at 3.2 lb

Cons

Stubby clamps can be hard to fit on cramped terminals
The easy-press On button can be pressed in the case and drain the battery
Amazon sells several variants with different diesel ratings, so check you get the 10L/10L, 88.8 Wh listing
No built-in air compressor

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Last reviewed October 25, 2026

Review

What to know about WOLFBOX MegaVolt24 (MV24)

TechGearLab's Best Overall (82/100, #2 of 13). It is a 3.2 lb, 4000A lithium pack rated for engines up to 10L gas and diesel. In testing it started a drained 2010 Ford Explorer three times in a row and measured 82.3 Wh usable. It has 65W USB-C, an IP64 rating and an included storage case. It is a strong all-rounder for most drivers, including pickup owners.

Editorial notes

Why it stands out

Why we like it

TechGearLab named the MV24 its Best Overall, scoring it 82/100 and ranking it #2 of 13. In its review, the pack started a 2010 Ford Explorer with a fully drained battery three times in a row, using about 3% of its battery per start. It passed the 3x rapid-start test.

TechGearLab also measured 82.3 Wh usable of the 88.8 Wh claimed, one of the closest matches to its spec of any pack in the group. Only the much costlier NOCO GBX155 scored higher in that test.

What to know

Skip it if the stubby clamps worry you on covered or cramped terminals, or if you want a result confirmed by several labs. Our evidence is one lab test, with no cold-weather test.

Performance

Score breakdown

Starting Power

Ability to start a fully dead or deeply discharged battery on the intended engine size, including repeated back-to-back starts and cold-weather performance, as shown in independent tests (TechGearLab 3x rapid-start, Car and Driver dead-battery tests, Outdoor Life V8 tests).

8.3

Three back-to-back starts on a drained Explorer; TechGearLab power sub-score 9.0. Capped for single-lab evidence and no cold test.

Battery Capacity & Standby

Measured usable energy versus claimed, jumps per charge, standby charge retention and recharge speed.

8.8

82.3 Wh measured of 88.8 Wh claimed (93%); 3% used per start; 65W recharge.

Ease of Use & Safety Features

Clamp quality and size, cable length and gauge, clarity of the display and indicators, spark-proof and reverse-polarity protection, and how easy the boost/override mode is to use.

7.3

Large LCD and a clear START indicator; stubby clamps struggle on cramped terminals; On button can be pressed accidentally in the case.

Build Quality & Durability

Construction, water and dust resistance (IP rating), quality of cables and clamps, storage case, and warranty length.

8.0

IP64, storage case included, lifetime warranty listed by WOLFBOX.

Versatility

Extra functions such as USB-C PD power bank, 12V DC output, air compressor, work light and alternator check.

7.5

65W USB-C PD and a light with strobe; no compressor.

Battery Safety & Sustainability

Battery chemistry and fire risk, verified safety certification (UL 2743), CPSC recalls or warnings, Prop 65/lead content, replaceable batteries and parts, and end-of-life recyclability.

6.0

Lithium-ion with reverse-polarity protection; no UL 2743 or other certification listed; no recalls found.

Value

Performance and features delivered relative to typical street price.

8.7

$119.99 for near-flagship lab results; third-party seller and price swings noted.

Specifications

WOLFBOX MegaVolt24 (MV24) specs

Power

Peak Current: 4000 A
Max Gas Engine (rated): 10 L
Max Diesel Engine (rated): 10 L

Battery

Battery Chemistry: Lithium-ion
Rated Capacity: 88.8 Wh
Measured Usable Capacity (TechGearLab): 82.3 Wh

Physical

Weight: 3.2 lb
Water/Dust Rating: IP64

Features

Built-in Air Compressor: No
Max USB Output: 65 W

Shopping

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Disclosure: We may earn a commission when you purchase through links on this page. This does not affect our editorial rankings.

Prices and availability may change. The retailer's price and availability at checkout govern the transaction.

Retailer	Price	Availability
AmazonLowest	$119.99 $146.99	In Stock	View deal
Walmart	Check price at retailer	Check at retailer	Check at retailer

Lowest verified price $119.99

30-day low $119.99

90-day average $119.99

90-day low $119.99

Based on 2 retailer price observations captured during the last 90 days.

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