A11 Portable Automotive Jump Starter 4000A 12V Lithium Car Battery Booster Jump Starter Pack with LCD Display, USB Quick Charge, for Up to 10.0L Gasoline and 7.0L Diesel Engines (Blue)

Look, this is not a made-in-the-US name brand precision-crafted piece of equipment, but what it lacks in "quality" it more than makes up for in utility and price. I have ordered three of these now, one for each car in the household. They've gotten us out of tight spots and can jump multiple times before needing to recharge. They're lipo, so they don't hold a charge forever like a lead acid or nicad battery would, but it's also got all the power you could ever need and charges by USB, which is super convenient. No bulky power adapter to keep track of. I love these!

Works great! A little slow to charge, but it cranked my car over (completely dead battery) for probably twenty seconds and lost 14% of the charge. Should get at least a half dozen jumps out of a single charge. The reusable bag seems sturdy enough and the air pump works great!

The holding case is only included in the 2000 and up models, not the 1500 so if that was something you wanted, don’t be misled like I was. I saw pics of the case but didn’t realize that it’s only for the mid and high tier, not the least expensive version. Makes sense and it’s my fault I didn’t catch it. Just wanted to let others know up front. As far as the unit itself it came charged, display is easy to read, and is nice that it doubles as a charger for other things like phone, switch, vape batts, etc. and not just vehicles. As far as how long it lasts, how many charges of what, or car starts I can’t say. Just got it today but I’ll edit this review when I know more about how it performs. I’ll be keeping it in a lipo safe bag while being stored in my car for safety. But with literal negative degree temps coming right around the corner, it’s really nice to not have to worry about a dead car when it’s the most cold outside. This should keep me up and running in no time. I docked one star for the flashlight feature. See the video for its crappy nature. The solid light is ok at best. It’ll work in a pinch but the strobe is sporadic and random but it is technically flashing but not a strobe flash. And the “sos” is marginally worse in its random flashing. It’s not SOS or Morse code *anything* just janky random flashing. Will it get attention on a dark road at night? Sure. Will it express “emergency”? Not really. Seems to be a good value for the price but time will tell.

My husband loves ❤️ this . Its so light, and every since I gave it to him. I cant remember the count on How many people has called him to jump them off. So I got another one.

I disagree with some who say that this product doesn't work on a completely dead battery. I purchased this in early 2021 and It has worked every single time I've had to use it on both of my cars. I have used it to jump start other folks vehicles as well and it works great. I have two cars one of them I use as my primary work vehicle and my 2nd vehicle mostly for leisure. I sometimes alternate between the two for work, but if I let either one set for an extended period without starting them the battery gets really low or dies completely. I pull this out hook it up and they start a majority of the time from the first jump start. There's been only a hand full of times where it would take a second jump. Bottom line it has proven it's self over and over I no longer need to ask for a jump start from total strangers. I bought this same one for my daughter to have in her car. My neighbors have bought this as well after witnessing me use mine. After making the purchase and having to use it on their vehicles they always thank me for recommending it to them and tell me just how much they love it, and how they no longer have to ask strangers or wait on a tow truck if no one is around to help them with a jump especially at night. I can't speak for those who may give this jump starter a negative review but It is a great buy at this price.

Excelente alternativa y medida de seguridad cuando la batería falla pero aún tiene vida útil. Lo he usado muchísimo este tiempo y también ha sido útil para otros a mi alrededor.

The product doesn't hold a charge anymore

When I was thinking about things tath would get you out in a jam. So I bought one. It even fit right under passenger seat. Boy was I in luck. I left the key on went in for supper came out. It wouldn't start. You know what up. I pull it out fired it right up.