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, MV24

Charging is quick and vehicle started right up - No hesitation. Wolfbox is powerful and compact. Great product.

I absolutely love this jump starter. I’ve actually purchased it twice, and it has not disappointed. It’s powerful enough to start my car quickly with no hassle, even when the battery was completely dead. One of my favorite things is how compact and easy it is to keep in my vehicle—it doesn’t take up much space at all. The built-in display is clear, and I like being able to see exactly how much charge it has left. The added bonus of the fast charging feature is super convenient too.It gives me peace of mind knowing I don’t have to rely on someone else or wait for roadside assistance if my battery dies. Definitely a must-have to keep in your car. Highly recommend!

WOLFBOX 4000A is absolutely the best jump starter you can buy for the price you will pay. It is solid, dependable, and holds a charge for months. There are many good jump starters on the market today and competition for sales is heating up. However, if you want to charge your jump starter, put it in your vehicle and be confident that it will work properly in an emergency situation, buy a WOLFBOX. You will initially spend a few dollars more, but the confidence in the product and "peace of mind" is worth it. I own two WOLFBOX jump starters; the 4000A and the 4000A with air compressor. WOLFBOX Customer serve is the best, by far. They stand firmly behind their products and are genuinely concerned about product quality and customer satisfaction! Between Amazon's and WOLFBOX'S excellent Customer Service, you will never regret your purchase!

Item is just as described. I fully charged the unit. Several days later I needed to use the jump box. The instructions were clear and straight forward. I did have to use the boost button. As soon as the boost button was activated, start appeared on the screen. The vehicle started immediately.

Arrived in good shape and on time. Although I haven't had to use it yet, it charged properly out of the box and the light works. The unit arrived with a 78% charge. I bought it primarily for use on my boat. The old jump starter I had (another brand) for the boat long ago gave up the ship. The technology and capability in the Wolfbox is MUCH improved over my old starter.

From the build to the features, the WOLFBOX 4000A Jump Starter hits all the marks! Sturdy build, with a large view screen. It comes with a decent case (My NOCO didn't come with one), a 65W charging block, and a USB-C/C cable. There's a built in light that is...BRIGHT! ) with "Strobe" and "SOS" functions. There are 2 omni-directional charging ports (USB and USB-C). I.E. The ports can be used to charge devices, OR to charge the power unit itself. Another nice thing is that the unit automatically turns on when connected to the battery. Note: When the Wolfbox arrived, it was charged to 80%. I decided to fully charge it for first time use. It charged to 100% in 18 minutes. Some safety features to protect your purchase: Overcurrent,Reverse Polarity, Short Circuit, and Low/High Temp protections onboard. My only ding is I wish the jumper cable was a foot longer. A negligeable issue. Now, where I live, the temps dived to -20, -30 degrees, and it just killed my battery.. Unfortunately, my NOCO just couldn't handle the extreme cold. Which brings me to this: The NOCO is a great jumper, but for these kind of cold climes, it was MY mistake not to get one with more than 1500 amperage! Hence my Wolfbox purchase, which gives me more than enough cranking power(4000A) for my Kia Soul. If you live where it gets extremely cold, get a jumper with as much amperage as you can afford. You won't regret it!

MegaVolt24, 4000A. This thing works and was easy to use. The length of the jumper wires are pretty short, so depending on where the connections to the positive / negative terminals are under your hood, you may need extension jumper cables (proceed at own risk). Day 1: due to single digit Fahrenheit weather, the 12V battery of my 2020 Rav4 gas/hybrid (2.5L, V4 engine) dropped low enough to prevent the engine from starting and the dash from turning on. I wasn't able to use another car to jump it, so I ordered this portable charger. I figured $120 was way cheaper than AAA or a tow - plus I can use this again and again. Day 2: the battery was so dead I couldn't even unlock the car with the key fob. Not great. Day 3: this device arrived, pre-charged to 72% (the manual says >50% is needed for a jump) but using the included wall plug & USB-C cable, it charged it up to 100% within 30-45 minutes or so. I probed my car battery and it was dead dead, at 3V and change. I connected the MegaVolt24 to the terminals, it started beeping and indicated "Low Battery" on the display. Based on that, the manual told me I needed to hit the "boost" button on the charger for 2s, then start the car. And bingo, it got the engine going! I drove the car a little but had to jump it again after parking and the total charge of the MegaVolt24 went from 100% to 90% after two jumps. I'll likely need to replace the battery but this portable jump charger is super handy. Though I'd recommend against leaving it in the car throughout winters & summers as the internal Lithium Ion batteries should stay between -4F and 140F, but will hold their capacity longer if kept around room temperature.

Unequivocally, my rating is FIVE STARS! I consider the Wolfbox a perfect product for its purpose! I am 80 years and 8 days of age and I had gone outside to run some errands and discovered that the battery in my 2005 Cadillac was totally dead - no interior lights or sounds. That evening I got online to Amazon and spent time studying all of the lithium battery powered mobile jump starters listed there. I finally made my decision to purchase the Wolfbox. No help or advice from anyone in the middle of the night. I first made sure that I had "Free Return" just in case that my choice might turn out to be a bad one. Then I placed my order at midnight. Prime delivered the Wolfbox the next day after lunch. I checked the items in the box, read the instruction booklet and proceeded to charge the Wolfbox up to 100%. Then I went outside, opened the hood of my car and attached the Wolfbox to the car according to the Cadillac operating manual. I followed the easily understood directions from Wolfbox and I got my car's motor started in about ten minutes while standing under the blazing Texas Sunshine in over 100 degrees heat. I disconnected the Wolfbox, hopped in my car and drove away to run my errands with all electrical equipment functioning and the air conditioning cooling me. Wolfbox is so great that I want to star in a TV commercial for the Super Bowl for maximum global coverage that should go viral for Wolfbox's contribution to the empowerment of Women's independence - even in their most senior years! I have always said that Triple AAA is is really Great and is a single girl's Best Friend - but you do have to wait around on their schedule! But with Wolfbox, my new BFF, I had an instant jump that kept me on my schedule with No Muss, No Fuss and No Bother! I am so satisfied with Wolfbox that I will be posting my experience on my Facebook Page! Thank you Wolfbox for a wonderful product that is so well protected in its own case and sold at an affordable price. Wolfbox did for sure design a very useful product that checked all of my boxes for purchase. I am a disabled senior citizen female who is now a Very Happy Camper! Thank you Wolfbox! Thank you Amazon! I wish I had had someone to video me jump starting my car but you will just have to take my word for it!

Good starter at the price point . Give’s peace of mind knowing even with a dead flat you can start your car.

Totalmente efectivo y práctico.

Great, until now. Didn't have the chance to try yet. Small size, powerful, and charges fast

Zeer positieve ervaring met de verkoper. Kort na mijn aankoop bleek dat de Wolfbox 4000A jump starter was afgeprijsd. Na contact met de klantenservice is het prijsverschil netjes en snel terugbetaald, zonder discussie. De communicatie was duidelijk en professioneel. Dat noem ik correcte en betrouwbare service. Het product zelf maakt een degelijke en robuuste indruk en voelt kwalitatief aan. Ik heb de jump starter nog niet daadwerkelijk op een auto hoeven testen, maar op basis van de afwerking, specificaties en de vele positieve YouTube-reviews van andere gebruikers heb ik er alle vertrouwen in dat het apparaat doet wat het belooft. Alles bij elkaar ben ik zeer tevreden over de afhandeling, de service en de manier waarop met mijn verzoek is omgegaan. Dat geeft vertrouwen en maakt dat ik deze verkoper zonder twijfel kan aanbevelen.

Que funciona de maravilla y puedes arrancar un vehículo sin batería varias veces sin problema