Head-to-head · Best Portable Jump Starters

NOCO Boost Plus GB40 vs WOLFBOX MegaVolt24

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

NOCO Boost Plus GB40 and WOLFBOX MegaVolt24 score essentially the same (4.6 vs 4.6). Pick the one whose trade-offs match your priorities — the strengths and watch-outs below are where they actually differ.

Ranked #2 in Best Portable Jump Starters

NOCO Boost Plus GB40

4.6

4 sources2 derived$91.21as of Jul 1

For most drivers the Boost Plus GB40 is the default answer: 1000A covers the engines sitting in an average driveway, the price stays near $100, and NOCO's safety engineering has the longest track record in the category. Move up to the GB70 or GBX55 only if you run a large diesel or want USB-C fast charging.

Strengths

— 1000A peak output starts virtually any passenger car, SUV or light truck (up to 6.0L gas / 3.0L diesel)
— Tiny 8-inch, 2.4 lb body fits a glovebox yet holds roughly 20 jumps per charge
— UltraSafe spark-proof clamps with reverse-polarity protection prevent the classic jump-start mishaps

Watch-outs

— Underpowered for large V8 diesels and big trucks that need the GB70 or GBX55
— Slow micro-USB recharge with no USB-C input on this generation
— Lithium cells need topping up every few months in storage to stay jump-ready

$91.21 · Check Price on Amazon Full review →

Ranked #3 in Best Portable Jump Starters

WOLFBOX MegaVolt24

4.6

3 sources2 derived$178as of Aug 1

The MegaVolt24 is the high-capacity value play: 4000A and a 24000mAh pack, enough to jump almost anything and still keep your devices charged for days. TechGearLab made it an Editors' Choice and Pro Tool Reviews scored it 9.4/10. Size counts against it, as does a younger brand reputation, though the lifetime warranty takes the edge off the latter.

Strengths

— 24000mAh capacity charges phones multiple times
— 1200A peak current handles large engines
— USB-C 65W PD for laptops and devices

Watch-outs

— Heavier than slim competitor models
— Price higher than entry-level options

$178 · Buy at wolfbox.com Full review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

NOCO Boost Plus GB40

The most compact and affordable pick here. It is outpowered by the 2000A NOCO Boost HD GB70, the 1750A USB-C NOCO Boost X GBX55, and the 4000A WOLFBOX MegaVolt24, but it costs less than all of them and covers the engines most drivers actually own. Only the GOOLOO GP2000 undercuts it on price.

WOLFBOX MegaVolt24

The power-and-capacity king of this group. Its peak output and battery pack dwarf the NOCO Boost HD GB70, the NOCO Boost X GBX55, the NOCO Boost Plus GB40 and the GOOLOO GP2000, and only the GBX55 matches its USB-C fast charging convenience.

Specs side-by-side

Spec	NOCO Boost Plus GB40	WOLFBOX MegaVolt24
Peak Amps	1000A	4000A
Engine Capacity	6.0L gas / 3.0L diesel	10L gas / 10L diesel
Battery	UltraSafe lithium-ion	—
USB Output	USB-A 2.1A	65W USB-C PD + 10W USB-A
Weight	2.4 lb	3.2 lb
Jumps Per Charge	~20	—
Flashlight	7-mode LED	—
Warranty	1-year	Lifetime
Voltage	12 volts	12 volts
Dimensions	4.61"D x 8.19"W x 4.21"H	1.5"D x 3.86"W x 9.33"H
IP Rating	—	IP64
Display	—	LED capacity readout

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