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.

The short answer

NOCO Boost Plus GB40 comes out ahead by a narrow margin (4.7 vs 4.5). The gap is mostly about everyday drivers of sedans, SUVs and small trucks who want a proven, glovebox-sized jump starter near $100 — read the strengths below before deciding.

Higher ratedRanked #1 in Best Portable Jump Starters

NOCO Boost Plus GB40

4.7

$99.95as of Jun 7

The Boost Plus GB40 is the default recommendation for most drivers: 1000A is plenty for the engines in the average driveway, the price stays near $100, and NOCO's safety engineering is the most proven in the category. Step 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

$99.95 · Check Price on Amazon Full review →

Ranked #3 in Best Portable Jump Starters

WOLFBOX MegaVolt24

4.5

$129.99as of Jun 7

The MegaVolt24 is the high-capacity value play: 4000A and a 24000mAh pack mean it can jump almost anything and still charge your devices for days. TechGearLab made it an Editors' Choice and Pro Tool Reviews scored it 9.4/10. The downsides are size and a younger brand reputation, but the lifetime warranty offsets the latter.

Strengths

— Massive 4000A peak output starts engines up to 10L gas and 10L diesel
— Large 24000mAh / 88.8Wh battery runs many jumps and acts as a serious power bank
— 65W USB-C Power Delivery recharges fast and tops off laptops and phones quickly

Watch-outs

— Larger and heavier than compact NOCO units, less glovebox-friendly
— 4000A is far more than most passenger cars will ever need
— Newer brand with a shorter long-term reliability track record than NOCO

$129.99 · Check Price on Amazon Full review →

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	24000mAh / 88.8Wh
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
IP Rating	—	IP64
Display	—	LED capacity readout

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