AVAPOW Car Jump Starter, 4000A Peak Battery (for All Gas or Up to 10L Diesel), Portable Booster Power Pack, 12V Auto Jump Box with LED Light, USB Quick Charge 3.0

I have an old Generac generator that we use when we have power failures or other things happen and try to remember to start it every month or two to keep the gas clean and make sure everything is going well. The last few times, it is really slow to start and pulling the thing to start is a nightmare since it is so big! Instead of replacing the battery pack, I decided to spring for this for just a little more. The generator has the connections to jump start right near the push button, so it is a breeze to hook up and it cranks way better than the battery pack that I bought a couple of years ago ever did! I am looking forward to having this to be able to jump all of my devices that have starters as well as for backup power in case we need it. It seems to have great safety features, after cranking for a while (since I turned the choke the wrong way) it shut off the start ability for just a second. I let off the button on the generator and the pack reset itself and was ready to crank again in about a second and a half. I love that it has a case that is big enough to keep all the parts in, I have a habit of collecting random cords in boxes, so my life is miserable when I need to find stuff sometimes. I hope it holds up to use and storage, just remember to charge it as soon as you get it, it showed four out of four bars, but when I plugged it it, it charged for a couple of hours while blinking the last light. I hesitated to buy this, thinking I wasn't sure of the technology or if it would have the power of a regular generator battery but it has won me over in a big way! Edit: I was using it to charge something a few weeks ago and it completely locked up. I let it sit for a few hours and it still didn't work on either the USB ports or the battery terminals. The terminals would start but would click and act like there was a short circuit within a few seconds, only allowing use for a very short time. I contacted the seller, they got right back to me, but I had left for a trip. When I got back home, I tried it and it worked perfectly. Apparently, it needed a bit more time to reset! I appreciate the quick response from the seller and I have now used it to charge a camera, a phone (multiple times) and jumpstart a truck without any hiccups at all. I still think it is a great product - just the right size and weight to be in my truck all the time. I don't have any hesitation recommending this for anyone since I know the seller backs it up with fast support response and stands behind their products.

Very good quality product. Works as expected, and customer service responded quickly and professionally.

If you have ever had the need to jump start your car, the anxiety of hooking someone else's car to mine, always made me nervous. I never knew if the person was hooking it up correctly. And if not, what happens if their car messes with my cars electrical system - it could fry the components. And conversely, what happens if when you start your car, YOUR car sends a surge through theirs - now you just thanked a helping angel with future car issues. This power bank and jump starter, solves all of those issues. After having it in my car for less than a week, I used it to jumpstart my car, my tractor, I charged my phone from zero, and then a friend needed a jump the next day. One charge handled all of these uses. I fully charged it the following day- but I am not sure it would have needed it. This power bank will start basically any car or truck with its amperage and standby power. I am very happy with this purchase. Pros: 1. Outstanding power. 2. Ease of use 3. Includes a cigarette lighter receptacle - (making it possible to inflate tires, or power a radio, or anything else that might utilize a cigarette lighter plug/cord.) you don't have to plug it into your car - always a plus. I can't tell you how many times an air pump would end up blowing a fuse. 4. Really nice carrying case. (easily stored in trunk) Cons: 1. Doesn't come with a USB3 power brick (it does come with a USB2 to USB3 cord). I have a ton of USB3 power bricks, so it's no big deal for me, but if you don't, you might want to pick one up. I don't think using a computer USB3 would be a good idea - it would probably work just fine - but for me - nervous. 2. Doesn't come with a wall plug. This would be a nice addition. 3. My neighbor keeps asking to borrow it. Overall: I really had a hard time coming up with the cons on this purchase. I will update the review if any issues show up later down the line. I am hoping for this device to remain fully functional for the next 10 years. Optimistic? We'll see.

Second UPDATE; I never had to use the "force start" function because my battery never got low enough. According to the manufacturer the NEW FORCE START FUNCTION is used when the battery voltage is less than 2.0vdc. I.e. Very Dead... UPDATE; The manufacturer reached out to me after my original Report below. They supplied me a free updated version to test. I tested it on my V-6 Toyota Rav4. The A58 jump starter came with 4 blue lights lite - so I tested it as received. (It was probably not fully charged.) It worked perfectly on 3 levels of car battery discharge that would not start my Toyota unassisted. It worked flawlessly even with a fully discharged battery (5.3volts) that would not even turn on my ignition lights! I actually started my V-6 five different times on the original as received charge and the last test was with only 2 bars charge level. I hook up the improved A58 and after a few seconds my battery voltage was high enough to light up the ignition lights and then start the car. I never had to use the red "force start" button on the side of the cable control unit. My Toyota would not let the battery discharge enough to even require me to use the red force start button. Even with a battery so low that it would not turn on any ignition lights with the switch on and would not even make an attempt to turn over unassisted, the A58 started the engine within a few seconds simply by connecting the A58. So I cannot comment on the force start function. You could also run your laptop or other high amperage 12vdc device for hours using the included 10 amp (120watt) cigarette-lighter style outlet. Very handy in a power outage if you buy a 100watt- 12vdc to 120vac inverter (under $20) to match. Comes with Type C charge cable -you supply the USB 5.0v power outlet from car or your own wall charger brick. The battery alligator clips spread 24” apart which means they will work on most boat battery set ups too. PROS: Long battery clip Leads =24” spread, Sturdy large alligator clips, Rugged battery enclosure, QC 3.0 USB + 2.0USB power supply ports both which worked. Basic LED flashlight with strobe & SOS functions. Status indicator lights on Cable unit tell you if its ready to jump start. Nice Hard Storage Case included . Plenty of capacity for even a large V-8. Bargain priced at $90. CONS: none that I see. This is a keeper! ORIGINAL & OUTDATED REVIEW: The complaint others have noted that it does not or may not work was true for me. THE PROBLEM MAYBE THE BLUE CHARGE LEVEL INDICATOR LIGHTS. When I received the AVAPOW Car Jump Starter, 4000A Peak 27800mAh Battery, it showed 4 bar lights out of 4 lighted. I thought this meant a full charge and i tried to start my toyota 3.5L V-6 gas engine with a dead battery (9.6volts). First I wanted to see how long the green "ready to start light" would stay on. The green ready to start light came on, and stayed on for about 45 seconds. Much longer than the 2-3 seconds that others had noted. So I thought great- and so I tried to start my engine. I disconnected the charger from the battery to reset the control, and got the green light again. When I tried to start the engine the charger indicator immediately went to red and did not even try to start the engine! Tried this a couple of more times. NO LUCK. The blue indicator bars on the charger still still showed 4 out of 4 bars. Then I decided to charge the went to charger from my USB wall charger. My wall charger supplied about 2 amps at a nominal 5 volts for about 45 minutes. The jump starter immediately started my medium sized gas engine. The jumber started still showed full charge. What this meant to me is that YOU CAN NOT COUNT ON THE JUMP STARTER'S CHARGLE LEVEL INDICATOR LIGHTS TO SHOW YOU THE START OF CHARGE OR READYNESS TO USE. Which makes this a non-keeper for me. One minior night-pick is that advertisement says two USB output ports are 3.0 rated. In fact only one of the two is 3.0 rated and has the corresponding blue color insulator. I Loved the extra large capacity of this unit but need to know if it is ready to use! Having indicator lights saying all is good with charge level when it is not is worse than no charge level indicator at all. I suspect that most of the user problems stem from a bad charge level indicator!

I like having these small jumper units around in my cars in case of emergencies and find I tend to use them more for others than myself. Like others I own this comes with a convenient carrying case that stores all the accessories and battery in a nice protective case. What makes this a bit more special is that you can easily recharge your phone on this jumper, just by laying your phone on top of it. To be honest, I've probably used this feature far more than I have used it to jump start a car. Once fully charged it seems like I could just keep recharging my phone, over and over, without have to recharge the battery itself...it holds that much power and the battery itself, once charged seems to stay charged without any attention for over 6 months at a clip. I check it once in a while (it's easy to check the charge level) and it never seems to degrade no matter how long it's been sitting. There are lots of these units, made by different companies, available, so it makes sense to buy one with the features that work for you. I've had no issues trying to jump various cars with this unit and the ability to recharge my phone has come in handy quite a few times.

My daughter called during a really cold winter day and said she was at the store parking lot with a dead battery. In the past we would have had to maneuver our car close to hers so the jumper cables could hopefully reach and then try to remember that attachment sequence. But now I had my AVAPOW. We just popped the hood, attached the AVAPOW and started the engine. I wasn’t surprised at how well it worked. The AVAPOW feels solid and well-constructed, and it works even in sub-zero temperatures. We were so impressed that we’ve since purchased two more AVAPOW jump starters so everyone in our family has one in their car. None of us will go through another winter without an AVAPOW in the car.

I recently attempted to use the Avapow 4000A starter on a very dead 16 Camry with a 4-month-old battery. The Avapow was purchased in 08/23 and had been unused until this attempt. I made sure the Avapow was fully charged, hooked it up to the Camry battery and noticed the Avapow LED going from green to blue (standby). I then disconnected/reconnected the starter and had the same result. I let it charge for a couple of minutes, then give it a 3rd attempt. I pushed (or so I thought) the red Booster button and went into the car to give it a try. That resulted in the usual rapid clicking sound of a probable battery issue. I went to the front of the car and saw the blue LED again. I then checked the battery voltage, and it displayed 7.x volts — or a very dead battery. I then called AAA, who came out and tested the battery to confirm the dead status. The AAA person used his big portable starter and got the car started after 2 attempts. His testing did confirm the battery was dead and needed to be replaced, which is what happened. I was still curious about the blue LED on the Avapow, so I wrote the company. They quickly responded and asked me to describe my situation and asked if it was possible to give the starter another try. This was not possible as by now, the car had a new battery. I would have liked to test it again, as it is certainly possible I did not use the Booster button properly. Perhaps the Camry battery was beyond recovery and this particular model of the Avapow was just not strong enough. Who knows. Anyhow, a few days later, I received an email from Customer Support informing me that they would be sending out a replacement ASAP. That caught me by surprise as I did not request one. As of an hour ago, I have a brand-new jump starter sitting next to me. It will soon be fully charged and ready for whatever happens next. I can't say enough about the outstanding customer service I received. I can't get over Avapow CS replacing my device without question. Well done and thank you.

Like you, I was skeptical about this jump box having good reviews, yet being low priced. I have had it for approx 4 months and a good amount of use to leave feedback worth reading. I work with automobiles daily in a setting that requires me to jump an avg of 15 - 20 vehicles a day. For the past couple years my Noco Pro X has been a workhorse that I could depend on all day. After years of abuse, the Noco started showing its age and was unable to last a full day. It was time for me to find a new jump box to supplement my workhorse when it needed charging. Researching all the options ended up with me purchasing this AVAPOW 4000A. The first thing questionable upon opening the box was its small size. The information provided on the listing closely matched my Noco, but the size and weight showed otherwise. Next questionable feature was how thin the jump cables are compared to the Noco. If you ever had issues jumping a car with thin cables, try thicker cables. So...although the stats look similar to a higher priced Noco, they are not. This unit does not put out 1/2 the power or for the length of time. I could keep my workhorse in immediate 12v mode for as long as I need (longest timed was 30min), while this Avapow is limited to 15secs. Probing a vehicles fuses for testing or powering up odometers is a challenge when given only My AVAPOW stopped working. Contacted Customer Service via amazon. After a few emails, my new unit arrived within a week. 5 stars based on their service and commitment to their products. Buy from them with confidence! Update The weak point is the cables and the circuit board connecting the charger. I purchased a 3rd party connector with a higher rated amperage and the avapow has been a workhorse.