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

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 onlyMy 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!

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!

Such a life saver! Easy to store in my car and works quickly to Jumpstart a battery. I like that you can use it multiple times without having to recharge it.

Had no problems starting things

This was purchased for my son and he absolutely loves it! Has saved him multiple times and he has even helped his friends out. Battery holds for quite awhile as well

Safer way to jump a vehicle both for you and your vehicle. Easy to use, easy charging, great built in flashlight. Charge lasted me about 6 months between uses.

This is a must own item. Well made and holds a charge in storage for a long time. Perfect for emergencies