

🚗 Power up & pump fast — be the hero your ride deserves!
The WOLFBOX 4000A is a compact, all-in-one jump starter and air compressor featuring a massive 4000A peak current and an 88.8Wh lithium-ion battery. It inflates tires up to 160 PSI rapidly, supports 65W USB-C fast charging, and includes a 400-lumen LED emergency light. Designed for 10L gas and diesel engines, it’s IP64 rated for durability and operates in freezing conditions, making it an essential, professional-grade roadside companion.

















| ASIN | B0DWRYJWKG |
| Amperage | 600 Milliamps |
| Automotive Fit Type | Universal Fit |
| Batteries | 4 Lithium Ion batteries required. (included) |
| Best Sellers Rank | #30 in Automotive ( See Top 100 in Automotive ) #2 in Jump Starters |
| Brand | WOLFBOX |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,858) |
| Date First Available | February 11, 2025 |
| Item Weight | 5.3 pounds |
| Item model number | megavolt 24 air |
| Manufacturer | WOLFBOX |
| Manufacturer Part Number | MegaVolt 24 Air |
| Model | MegaVolt24 Air |
| Peak Output Current | 4000 Amps |
| Product Dimensions | 2.17"D x 5.28"W x 9.37"H |
E**N
Powerful, compact and well made. Would buy again
Jumps my Diesel no problem, Air compressor is surprisingly fast for a small unit. The included case is really well made and stores easily. These are lifesavers to just keep in your car and I highly recommend
T**Y
I'm impressed
A quick summary is that this little unit holds a lot of power/features and is much better than my older lead-acid style jump starter/inflator device. I purchased this Wolfbox portable jump starter/air compressor to replace and older unit I previously kept in my vehicle. Although the old unit does still work, it is massive/bulky, taking up a lot of floor space in the back seat (it is the big yellow CAT unit in the photos/videos). And what a difference it is, sitting at less than half the size even in the carrying case. Apparently the Lithium-ion batteries in the Wolfbox are the way to go these days compared to the AGM lead-acid battery in my old unit. The Wolfbox unit comes with the jump starter/inflator, jumper cables, inflator hose, a few valve attachments, and a USB-C charging cable all packed within a nice carrying case. (and also a manual). Great presentation overall, and it feels sturdy/premium. The only note I can think of for Wolfbox to improve here would be to add a piece of foam in the center of the case to act as a divider/protection. This would keep the jumper cables/other contents stored in the pouch from touching/scratching the jump starter unit stored in the other half. Not a huge issue by any means, and I rectified this by cutting out my own piece of thin foam (you can see it in the pics). It looks so nice I would hate to see it scratched up over time. I charged it as-directed out-of-the-box, and it took less than 30 minutes to top it off. Reading in the manual, it says it would take 1.5-2hrs time for a full charge. My old unit recommended charging for 24 hours, so a big improvement there as well. Given this time of year, the cold temperatures have come in and caused all of my tires to lose some air pressure, setting off the dashboard warnings. So I thought this would be a perfect opportunity to compare the air compressor feature vs my old one since all tires needed to be filled 6-8psi. The short story is that the Wolfbox wins out again. I had two tires that both showed they were 6psi low exactly, so I set my old unit on one tire and the Wolfbox unit on the other. My old unit took 3:51 (3 minutes and 51 seconds) to inflate 6psi, while the Wolfbox took all of 1:13 to inflate 6psi. So the Wolfbox is 3x faster than my old unit. Quite impressive for being half the size. I love how big the display is. The screen is bright and I can easily read the numbers while standing up compared to the tiny screen on my old unit. It also has cool functionality that lets you set the target PSI, and it will auto-shutoff when complete. There are presets for a vehicle, motorcycle, bicycle, and ball, but you can set it higher/lower than those and also update the preset if you want. While I have not been able to test the jump starter functionality yet, it advertises 3000A compared to the 1200A of my old unit. I'm unsure how that translates to actual cranking amps, but seems to be more than capable for my medium size SUV. Overall, I am quite impressed at the power/functions/features. Coming off of my old unit, it seems to be an improvement in almost every way. The price is reasonable for what you get. Hopefully I won't have a dead battery and have to test the jump starter, but good to know it's there.
R**S
Compact, lightweight, versatile and it worked!
While getting prepared for the upcoming snow storm, I found my diesel generator was COMPLETELY dead. I had been thinking about a jumper box for a while now, even more so now that my son drives daily to college. This one being well reviewed, with a solid/ flashing light and built in air compressor caught my eye. It was delivered this morning, and I charged it fully as recommended. I was also unsure of is power because this small thing is a lot smaller than the old heavy type jumper box I'm used to. When I tell you I was very pleasantly surprised when this generator jumped to life immediately!! I bought one for my car and one for my sons car. I will probably add a third for the wife's car. Since I will have it in the other 2 cars, that almost guarantees that it would be the vehicle without the jumper to need it! I do wish the cables were a little longer. That shouldn't be a problem in a vehicle, but a little awkward on the generator. I contacted the company about something and they were SUPER responsive. It's only day one and I jumped the generator 2x already, looks like I'll probably need to replace the battery on that. Im pleased to know that is I need the generator before I replace that battery that I can get it started. So far so great and my initial impression is to recommend. Will update if necessary, positive or negative.
C**.
So far so good
So far so good ! I've only had it a month and use it to fill air in tires a couple times. It has held the charge in its case in my car in cold Michigan winters, though I try to remember to bring it in out of the cold. I haven't had to use the jumping feature yet but everything looks good, it's user-friendly and nice and compact with a sturdy carrying case that sits nicely under a seat.
A**A
First use for air pump and I was impressed.
I've only had it a few days, and haven't used the jump yet, but AAA had to jump one of my cars from a battery not putting out anything, and it jumped it immediately as if I had put a brand new battery in. What I have used is the air pump. I topped off all 4 of my truck tires with 10 pounds each to 60 psi, 8 more tires @ 3-5 pound top offs on 2 SUVs, and my boat trailer 4 tires plus spare from current 70 psi to 90 psi. It was impressively fast for such a small package on the cars, and decent on the boat tires (tractor trailer size tires), but it took the entire battery down to 1 blinking bar that was close to running out. No slow down in pumping and it did the entire job, so I'm sold and will be buying 2 more once I see the longevity of these. I hope it holds up because I really like this unit, just wish it had a cig lighter plug in. I'll add the 5 star if it holds up.
K**R
Das Produkt macht optisch einen sehr guten Eindruck. Alles wirkt hochwertig und haltbar. Natürlich ist die Größe und das Gewicht nichts für die Handtasche aber dafür ist es auch nicht gedacht. In der mitgelieferten Tasche sind alle Zubehörteile sicher verwahrt und geschützt. Der Akku war zu 70 % geladen und mit einem 65 Watt Netzteil (gehört nicht zum Lieferumfang) sehr schnell auf 100 %. Die Bedienung erfolgt über Taster auf der Gerätevorderseite und dem Display und ist nahezu selbsterklärend. Ich habe die Starthilfe sofort an einem Fahrzeug mit abgeklemmter Batterie getestet und den Motor zwei mal ohne Probleme gestartet. Dabei hat der Akku lt. des vierstufigen Symbols auf der Anzeige fast nichts an Energie verloren. Der integrierte Kompressor funktioniert ebenfalls einwandfrei und ich habe gleich alle vier Reifen des Fahrzeugs auf den benötigten Reifendruck aktualisiert. Auf dem großen Display wird der aktuelle Druck in wählbaren Dimensionen angezeigt und kann vom Ist-Wert mit den Tasten + und - auf den Sollwert gebracht werden. Die Zubehörteile sind von guter Qualität und sitzen stramm und dicht. Auch die eingebaute Leuchte funktioniert gut in drei verschiedenen Modi. Die Powerbank-Funktion habe ich noch nicht ausprobiert aber ich bin überzeugt, dass das auch gut funktioniert. Ein paar Verbesserungsvorschläge hätte ich dennoch: - keine hochglänzenden empfindlichen Kunststoffteile verwenden - die Anzeige des Akkustandes auf dem Display in % angeben - Taster beleuchten oder farbig gestalten für die Verwendung bei schwachem Licht - gegen Mehrpreis gleich ein passendes 65-Watt Netzteil mitliefern Insgesamt bin ich mit dem Produkt sehr zufrieden und empfehle es uneingeschränkt weiter.
R**.
Just buy it ! Amazing and works perfectly
J**B
Cet appareil se charge très vite. J'ai eu l'occasion de regonfler deux pneus de la voiture. Il m'a suffit d'indiquer la pression à atteindre sur la première ligne. Vous raccorder le gonfleur. Vous verrez immédiatement la pression restante. Vous mettez en route le gonfleur qui s'arrêtera des que la pressiondelandée est atteinte, et tout cela sans trop de bruit et très rapidement. En ce qui concerne le démarrage électrique, je ne l'ai pas encore test. Personnellement, le le recommande.
R**S
It's absolutely amazing, it started my 2.2 diesel automatic mercedes with a completely flat battery instantly, the torch was handy as this happened when it was dark. I have inflated all my tyres to the correct psi, it stops automatically when the correct tyre pressure is reached which you can adjust easily by pressing the plus or minus buttons. You can charge your mobiles from this also and use it for other usb devices, so many uses in 1 package, takes around 90 minutes to fully charge, apparently it holds it's charge for 2 years, though I would top the battery up every 5 or 6 months just in case, or more frequently if you use it to inflate or check your tyre pressures. It comes in a robust smart case to protect it, the jump start leads grip very strong, it's an excellent quality item from wolfbox, as soon as you open it you will see for yourself. I have their mirror dash cam also which is another amazing quality product. I would honestly recommend this to everyone..
I**S
Senza avviatore avrei dovuto ricaricare ogni due giorni la batteria del trattore🚜poiché devo ancora verificare se dipende dalla batteria o dall'alternatore. Con wolfbox niente problemi.
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