Portable Jump Starter - 2000A 60W Fast Charging,Car Jump Starter for Up to 8.0L Gas and 7.5L Diesel Engine 12V Car Battery Charger Jump Starter with Smart Clamp Cable, LED Flashlight Jump Box

I have an older Mini cooper that had a new battery installed last year. door left open. battery drained. If i don't use the car regularly, it wont start. This item is a godsend. Pop the hood, connect, and boom every time. I get can up to 8 starts out of a charge. Well worth the money.

We bought a different type of battery starter. This one is easier to use. You know it’s working when the charge level starts going down. The other you had no idea and it ended up not working. Since we’ve gotten this, we have used it three times to start a car without charging it. It’s worth it.

I've been looking for a jumper starter that can charge my Dell Laptop through USB-C, and this might be one of the few I can find under $80. When I bought it, it was already 70% charged. I immediately used it to charge my Dell laptop. Thanks to PD60W, it can charge while I'm using the laptop. I used it to charge the laptop and turned on the LED light at the same time, discharging it to 1% before recharging it. I didn't test the fast charge, but it was fully charged overnight with a 2.1A phone charger.Today I made the same mistake again, removing the keys and sleeping in the car for an hour. As a result, my Sienna's automatic headlights did not turn off, so the battery was drained and couldn't start. That's also the reason I bought this Jumper Starter. It was a perfect opportunity to test this fully charged jumper starter. I connected it to the battery without waiting and went straight to start the engine. It started! When I went back to disconnect the jumper cable, it still had 95% of battery left, and the whole process took less than a minute.So, I'm very satisfied with this jumper starter. I might also buy its other model with a higher capacity, which is 4000A Peak 27000mAh, for my the other car.

Bought this to jump start a large drive lawnmower and it did perfectly well, first crank the mower came back to life. A week later we lost power in the house for two days. I remembered I’d just bought this. We set it up in the kitchen with the light pointing to the ceiling. It lasted HOURS and the large display made it clear exactly how much life was left. We were able to quickly recharge it via a USB port in our car and then used it to recharge our phones while the power outage continued. Great case, perfect tool for the job we bought it for and then discovered it had multiple other uses for which it also was perfect. Very happy with the purchase!

It looks that some specifications are exaggerated, certainly not 2000A as there is a 70A protection relay in the connector. I guess that it is ~200A or lower. The batteries inside are 4.3Ah, so best (rare!) LiPo batteries in class can be discharged at 60C, or 240A. Higher currents will permanently damage the battery. The fully charged voltage is 16.4V meaning that it contains 4 LiPo cells in series. In general, it is not desirable to have many cells in series without discharge BMS, 3 cells would probably be more reliable. It does not supply jumpstart voltage when there is no main battery in the car, or it is fully discharged. It requires at least "some" charge in the main battery to crank. I was thinking of using it as a backup power for a computer using a 12V car adapter. There are terminals directly from battery, one will need a special adapter + protector to do so.It charges from USB-C connector (5V 2A) and USB QC3.0, but when a more powerful flexible supply (eg. Dell PC USB-C power supply) it charges it turbo mode. However, with one of Anker 65W USB-C intelligent supplies it does not charge at all.I measured battery capacity when discharging it to 11.2V (this gives 2.8V terminal voltage per cell) at 4A load current. It delivers 4300mAh capacity, or 62.5 Wh from its 4 cells. The advertised 12800mAh is "equivalent" of 5V battery, and is reasonable. The description of USB port capabilities is accurate.The capacity gage is very inaccurate, it basically displays "something" like 1%, 30%, 50% and 100% when discharging. In charge mode it is also not too representative.Overall, it is decent handy power bank if advertised accordingly and accurately. It would be nice if its USB-C output could power notebook computer directly.

I got this a couple months ago because it was on a black Friday sale for super cheap. Figured it'd be a good item to keep in my car in case my battery dies...Little did I know that my state was gonna get hit with the worst ice storm the town has ever seen, which killed our electrical grid. I have been sitting in candle light in my freezing apartment for almost a week while the town melts and hopefully gets electric services back. The only reason I can leave this review is because I bought this wonderful jump starter/charging block. Otherwise my phone would have been long dead by now.Its super easy to use and even has a QC (quick charge) port. I will definitely be buying another one of these after this disaster is all said and done, it has been my lifeline to the outside world

Competitive price

Compact and easy to use. Great for the price.