JUMTOP Jump Starter, 22000mah 12V Car Battery Charger Jump Starter Portable Car Booster Pack 3000A 10L Gas and 8L Diesel Engine Lithium Jump Box with Power Bank, LED Light

I purchased the JUMPTOP Model N-13 because my car would not start when it was really cold. I live in Wisconsin, and we get really cold periods in the winter. The day my car wouldn’t start it was -14 F (-25.5 C) outside. I was really happy the unit arrived when it did, because it got colder. I charged up the unit, and the next day it was -24 F (-31 C). The unit worked great. When I hooked it up the car turned over and started right away. Of course, I drive an older car (another reason I bought the unit), so it doesn’t like the cold and wouldn’t stay running. So I waited the 30 seconds, pushed the button again, car started again. Finally, the car stayed running and I disconnected the unit. I had to start the car 6 times before it stayed running, and the JUMPTOP had plenty of power to do that, and then start my parent’s car also. And since it was only down to 3 lights (it gives you an indicator of how much charge there is—there are 4 lights to indicate fully charged) I could have started many more cars.This is a great unit, easily portable, light, and it even looks cool. But starting cars is only part of what it can do. It’s got 2 USB ports to charge phones and other devices. It comes with a cigarette lighter adapter, so you can use it to power anything that you have to put into your lighter to use. The flashlight has different settings and is really bright. This unit is also the newest model, which I chose over the slightly cheaper N-12. It featured more amps (3000 versus 2500) and I thought the extra ones could help when it is extremely cold.Like another reviewer, I did have a problem with the start button. When the unit arrived the start button was all pushed in and hard to activate. The unit worked well (above) but the button concerned me. I contacted the company and they got back to me right away. They were very concerned about the button and told me they would replace it. They sent me a replacement that arrived in two days, and was perfect. This is an honorable company with great customer service and a great product. Will I purchase this product or another from this company again? Absolutely—this product is perfect as a Christmas gift for anyone who travels and/or drives an older car, and it is on my list for several of my relatives.

I buy and sell cars. So, having something to jump cars becomes common with cars that may have sat for a while, or someone left the lights on or the battery dies. I am used to the big lead acid jump boxes, and have seen these Lithium types online for a while but just figured no way that could work being so small, and most of them didnt have the peak amps I was looking for. I finally decided to try this one based first on the amps being 3000 which is the highest ive seen in Lead acid ones or Lithium, and the price was less than that of lead acid ones with less amps. I was doubtful this would cold start a dead battery so I intentionally drained a cars battery by leaving the doors open, lights on, and ac fan running for two hours. The battery was down to 8 volts. It would not turn the engine over or even click. I hooked this jump box up to it and PRESTO it started the car right up! Turned over strong start as if it had a fully charged battery. I am truly impressed with this and I am telling my car lot friends about it. I am going to keep this one in the trunk of my car since its so small. I hope it holds up well and lasts long, it does come with a 12 month warranty which is good hope I dont need to use it. **UPDATE** I bought this in July, it is now December. I have a classic Lincoln that I barely drive, and went to start it yesterday and the battery was dead. Since I had not used this jumpstarter since July, I sort of forgot about it and was ready to haul out a big battery charger and electric cords. Then I remembered I had this, and got it out of the trunk of one of my other cars where it had been sitting since July. I hooked it up to the old V8 Lincoln and it fired the engine right up! I went on my way and stopped at a store, went to start the Lincoln and the battery was still not charged so hooked up the jumpstarter and it fired the Lincoln back up again! This thing is unbelievable what it can do in such a small package, and how long it can sit waiting patiently for you to use it and its ready to go!