WOLFBOX 4000A Jump Starter,12V Car Battery Jumper Starter Portable with 65W Quick Charger,LED Display,88.8Wh Booster Jump Box Pack (10L Gas 10L Diesel Engine) with LED Light,Jumper Cables

Charged to full and placed in my car. Needed it the very next day. Easy hook up, worked perfectly. Something has drained my battery several times and I haven’t had opportunity to take the vehicle to the dealership. Whatever the problem is, it has only been happening intermittently. That being said this battery jumper gives me peace of mind for now and any future battery problems. Anyone could read the directions and be able to use it to jumpstart a car. Great item to carry in your car. Can’t speak to this item’s longevity but it seems to be well made. I carry it in a lower storage compartment in back of my suv. It’s a little larger than some I have seen so if you may want to measure if planning to carry in your dash/glove compartment.

I have a 2004 Saturn Ion that I don't drive often and have a continuous issue with the battery draining just enough that it won't turn over the engine. Been using a 4 amp Battery Tender, but was looking for something more convenient. I first bought another brand of jump starter, but it couldn't start a little 2.4L engine. Gave Wolfbox a go and glad I did. I had charged the jump starter over the previous weekend, so it was ready to be tested. Charges quick, has some weight to it and doesn't feel cheap. Went out this morning, car didn't start. Followed the directions, got in, turned the key in the ignition, and the engine turned over and fired right up! Awesome tool! And it only used 2 percent of the charge.

I could not be happier with my purchase! I lost my job and let my car sit idle for weeks. When I needed to run errands that I had saved to do all at once, my car didn’t start. I knew my lack of maintenance was the reason my battery had died. Regardless, I had to remedy the situation. I wasn’t sure whether to get a charger or a jump-starter. I decided on the jump-starter because I live in the desert and I didn’t want to be stranded somewhere being I couldn’t trust my battery to be reliable anymore. I charged it fully before using it. I admit I was a bit skeptical but it worked like a charm. I got all my errands done without needing it again. After a couple of days, my battery had lost all the charge it got from my day out. My battery was bad and needed replacement. I wasn’t ready to outlay the money for a replacement and I had a couple more errands that needed handling ASAP. I grabbed my Wolfbox, checked the percentage which was at 97% after a single use and went out to 3 different places. Each time I stopped, I needed the Wolfbox to start my car again. It was so easy to use and carry around. It is compact, light and hassle-free. After using it 4 times after the first, the charging capacity was still at 71%! The clincher for me was that it came with a hard-shell case to keep everything together neatly and organized. Using it didn’t cause any sort of commotion when I was using it out and about. In fact, one lady passing by commented how great it was to have one because it’d saved her when she was having electrical issues until it got figured out. It is basically fool-proof, although I recommend reading the instructions anyway. It looks very sleek and modern. Best of all, after leaving it in my hot car for a few days, the charging percentage was still at 71% which was a concern of mine and prevented my purchase sooner. This is a must-have for every single car. Peace of mind is priceless and this was really reasonably priced for the product. LOVE IT!!

Works good, start dead battery on dune buggy (4 cyl) when I remove it the car stop (but the wolfbox decreases in % slowly) To recharge a phone it’s slow ( 10% in 20 min) at least it’s possible. For now it’s a good product.

Arrived 78% Charged. I have it charging now for roughly 8 minutes has gone from 78 to 84%. The LED Display and Flashlight function properly. The Socket for Clamp Cable is a tight fit. Clamps have a very good grip on the battery posts. Easy to use. I realize some people do not know how to open/release the hood/lid of their car. They need to learn how, otherwise the Jump Starter is useless until someone knowledgeable can help them. The Wolfbox MV24 4000A is convenient to store inside the vehicle. It may fit underneath the seat of Pickup trucks, large SUVs, and Vans. It does not fit underneath my 2023 Toyota Camry XSE V6 seat or my 2022 Honda Civic Touring seat unless you leave the case open/unzipped. For the price of $110, it beats waiting around for AAA or other Roadside service to get your vehicle started, and you don't have to search around to ask someone for jumper cables and have their vehicle get you started.

[Update: I have added 1 star, raising the rating from 3 to 4, because almost immediately after this posted, the company reached out and refunded my purchase, proactively, without even hearing back from me. That is five-star+ customer service as no onr has ever done that for me. That said, the product still needs an adaptor with a spaded prong, a smaller clamp uption to fit tight terminal spaces in cars like a Checy Sonic, and a quick start guide. But great customer service and a product that worls well if you get past the learning curve and/or improvements needed is worth a 4th star. The rest of this review is unedited (the original 3 star review). Also, with that refunf, I should probably qualify this edit is now as a 'compensated' review, though it was a surprise that came after the original purchase and review and did not influence me except by showing some respect for my experience and comments. That differentiates this company from most.] I had a portable jump starter on my wish list as a 'prepper' for quite awhile. Given the countless times I have needed and used a portable air compressor to air up low or flat tires (for myself and others), I knew it was only matter of time before I'd wish I had more than cables in the car. Sure enough, had to cancel a date recently when I went to the garage to head out and my car was completely dead, no lights or dash or dings/alerts. Ugh. Car was facing into the garage, so a jump from a neighbor's car was not really likely, but my daughter's Cadillac was parked next to mine. I had the keys since she was out of town, but guess what? It was dead, too (had lights and dash, but the ampmeter showed it under 9 amps and it would not turnover, because she's been gone long enough and I'd failed to start it/run it). After calling some neighbors to see if they had a portable jumper or even a trickle charger (nope), I logged into the jungle here to see if my Wirecutter recommendation, the one I'd delayed buying because it was rarely on sale, costly, and did not seem to be fulfilled by either Amazon or the manufacturer (even though it references a Weego store onsite), was on sale etc. Nope. So I started searching the listings and found the Wolfbox 4000 on a good sale, read a LOT of reviews and watched videos, enough that even allowing for some possible 'astro-turfing', I liked what I saw and read from those who liked it more than what I read from those who did not. By the time I ordered it, it was 2 AM, but the cart still said it would be here by morning. When I awoke at 8 AM, it was on my doorstep. Opened it and went to charge it right away, planning to jump the car at lunch. This was where I ran into my first 'snag'... though well packaged and presented, it lacked a 'quick-start' guide, and the manual did NOT explain how to turn it on. Huh? OK, you'd think that is easy, it has a power button and a 'boost' button, that's it. I pressed each, and both, and nothing happenned. So, I thought, crap, is it DOA? Found nothing in the manual I'd overlooked. So, figured it must need a charge to come on. Made sure I had a live outlet (not tripped) in the kitchen and plugged it in to charge. Still no lights or power, so, frustrated, I walked away thinking maybe it needs awhile. Came back two hours later, pressed the power button, nada. So, now I'm ticked. I log back in here thinking, if I cant find a review or video that tells me what I missed, I'm going to have to return it. I started watching demos again and nothing jumps out, until I come across one grainy, shaky quick vid with no audio at all, and I notice the guy does what I did: he presses the button, and nothing happens, but THEN, he presses the button and HOLDS IT DOWN FOR 2 SECONDS: it powers up! OMG. How hard would it have been for Wolfbox to indicate on a quickstart piece of paper that you have to HOLD THE BUTTON DOWN FOR 2 SECONDS to turn it on? I try it, and it comes on at 78% charged. Now, I suspect it may have arrived with that charge, because now that I have watched it charge to 100%, I think it would have fully charged in the time I had it plugged in if it could charge while powered off. Snag #1 solved, after a delay of several hours required to figure this out on my own when I should not have had to. Snag #2: I also blame this on lack of a quick-start slip. My kitchen has outlets with ground fault breakers that do NOT have red/green indicators, and they trip a lot, but I cant tell unless something doesn't work when I plug it in. I had moved this unit out of the kitchen when trying to figure out the power up mystery, so when I plugged it back in to charge, was a bit surprised there was no 'charging' indicator that was obvious. Nothing changed on the display. I walked away and like 30 minutes later checked, still at 78%. Hmm. Reset the breaker, checked again, still no change, waited, no increase. Ugh. But when trying some different outlets again, the way the 65W charger is put together reminded me of a USB charger I got cheap once, which clearly was not made in the USA. It also had the 'swivel prongs' this had and the prongs were straight (no bigger 'spaded' prong for the one side like most US made prongs, which effectively 'snaps' the plug into your outlet when you get it pushed in and keeps it from falling out). So, I first make sure the prongs are fully swiveled out (there is a bit of play possible and figured maybe that can break the circuit). I watched when I inserted it what I think of as 'normally' (with the bulf of the adaptere hanging below the prongs, prongs at the top). As with my other cheap charger, I could see that the weight of the adapter was causing it to come away from the outlet slightly. This happens with bulky adapters that have no wide spaded prong to snap them in and hold them. I had to turn the adapter upside down, with prongs at the bottom, so the weight of the adapter above the prongs pushed them INTO the outlet insted of pulling them AWAY from it when hanging below, and push to make sure it was firmly in place to begin with. THIS completed the circuit, and immediately I saw the green 'IN' light and a 'fast charging' indicator both come on. Within minutes, the percentage rose from 78 to 79, and it was fully charged not too long after. SNAG 2 solved, after another unnecessary delay. Snags 1 & 2 were 'sunk costs' for me, I paid the price of a learning curve I should not have had to, but lessons learned, those issues were now avoidable going forward. The product loses 1 star from me for that and the associated bad initial customer experience and bad first impressions. Put a quick start guide in (with bigger print than the 4 font in your instruction manual) guys that covers these issues. And/or make an adapter with a spaded prong to hold itself firmly into the wall to complete the circuit. Snag 3: Now I am ready to try to jump the completely dead car. Having watched some videos from people who actually used the product and jumped fully dead batteries, I knew the 'boost' would likely be needed to bypass the units limiters and let a full charge into my battery. But first I needed to get it hooked up. I had noticed that the jumper cables connector was a VERY tight fit (as other reviewers have noted), so even though it seemed like it would not fit, I persisted carefully and got it in. This was not the snag, but I mention it, as later, when I took it out, it was also VERY difficult to get unconnected, bad enough that I believe the connection could sustain damage over time unless a light lubricant is used (I have not tried that yet, but am debating what the best alternative there may be). So, I do consder that a slight engineering flaw, but, better too tight than too loose (like with the wall adapter). So I go to clip my battery posts. The cables ARE very short, as complained about by some other reviewers, but if you want compact portability, that just has to be like that, from my perspective, so I didn't mind it. But my 2013 Chevy Sonic LTZ's battery has a design where the posts are recessed to be level with the battery caps next to them. As a result, the car's cables can't even use those fat terminals, they have to use the thin clamping circles to even have room to connect. These big fat alligator clamps in the Wolfbox just did NOT want to fit on my posts in the small amount of space allowed. Now I knew there had to be some angle, some way, so I did not give up, but, especially on the post closest to the front window, which had the least room of the two, it took over a dozen tries to find a 'spot' and an angle that I could get the connector fastened where it would grip and not pop itself off. In that effort, the clamps sort of wore out my old, weak hands (I'm 59 with diabetic neuropathy, shaky hands with little strength or feeling in them). I was not pleased. Nor was I sure that the tenuous grip I had found would hold for long or as the car was trying to turn over. But once I got the second clamp to also 'grab' finally, the indicators clearly showed I had a connection. No lights inside my car came on (I had the door open) and no door ajar alarm, so I knew it would not start without the boost. So, I pressed the boost button. Of course, nothing happened until I tried a second time and HELD IT DOWN (figured by that time, but just testing) which after pressing it a couple seconds, the circuit was made, my interior lights came on and the door ajar alarm was dinging. Got in, boom, it turned right over and started. SNAG #3 resolved, but I am taking a star off for the clamps being too large to get onto the posts of my car battery reliably/easily and too hard to squeeze to get them open. I noticed with the Weego trickle charger, that came with three different connection options: 1 smaller/narrower clamps (which would have obviously opened a lot easier and fit), terminal connectors, and a third option that I am not even sure what it was. In retrospect, that is both very smart and also probably a reason their products cost a bit more; a trade-off is they do not have a carrying case at all (Wolfpack has to fit their accesories in their case). Maybe Wolfpack could make different ordering options where the clamp sizes/types vary and/or a package with all the options (for people using who want to be able to service all types of batteries). I did have to jump the same car two more times before I got the battery back to full life by driving it (I had drained it by leaving some parking lights on, I believe), and my daughters Caddy. and it got the jobs done. Using boost drained it about 8 % each time for my Sonic. It only dropped a couple ticks starting the Northstar 8 cyclinder in the Caddy (and boost was not needed). I did not have to recharge the unit between any of those three jumps. The case is really nice and I am glad to have it in the car. Had my user experience been smoothed by a proper quick-start guide they'd likely have gotten 4 stars from me. The two engineering flaws (the unspaded adapter prong and the alligator clips excessive width and excesssive strength) need overcome for the fifth. But if you are willing to buy it knowingly, I do think this is a good enough unit, especially for the price, to recommend it. The only part I can't review is reliability over a long time. If I have any new issues with it over time, I will edit the review accordingly. One of the next reviewers to come along would serve their viewers well to point out the lessons here, too. Final evaluation, three stars for average overall. Now that I know I will need a trickle charger for when my daughter's car will sit for so long, I'll likely give the WeeGo a try after this experience with a lack of connector variety.

My son’s car battery was dead so we gave this a shot. It wouldn’t start up right away so we used the boost feature and it turned over in a few seconds. Totally worth it! The light works very well too. Bought another one for myself. Great safety features, charges extremely fast, only thing is odd and gets in the way are the cables. It’s designed where the positive (red) cable has to cross over or under the black (negative) cable. The battery for my car has positive on left and negative on right so this crosses them up a little.

I bought this Wolfbox 2000A jump starter here recently looking for a compact starter to store in the vehicle. This one was reasonably priced and I wanted to get Wolfbox since I already own one of their air dusters that was featured on ProjectFarm on Youtube. That was a high quality product, and this jump starter seems to be as well. It comes with everything needed (jumper cables + starter + usb C cord for charging) but also includes a carrying case/pouch. The case keeps everything tidy when stored, much better than using the original box like I did with my old starter. While it doesn't come equipped with a tire inflator (I already have one of those), the size is nice and compact, fitting easily in the vehicle. The 2000A rating is more than enough for my vehicle, and I appreciate the boost mode. The display is big and clear, which I am starting to appreciate more these days. I am happy to report that it does support fast-charging my phone, so it could come in handy in a pinch. I also like the bright LED light that features strobe/flashing modes as well as the seemingly-waterproof design. I say seemingly because I can't find what IP rating this 2000A unit is rated for, but the way it's built with no-leak buttons and rubber port covers makes me think it should handle an unexpected dunk in water. All around, it's a nice package. I like Wolfbox's quality and this starter seems to follow that trend. The features it offers and included carrying case are nice to have in this price range. I will report back if I have a need to jump start my vehicle, but nice to have peace of mind.