It worked the 2 times I needed it, but with a major flaw. You get one chance to get your car to kick over and that's all you get until you charge the unit again. It went from 100% charge to 1% charge jumping a battery that was depleted to 9v - not completely dead by any means. Yes, it provided the power to start a 3L 6cyl SUV engine, but then it was depleted to 1% and needing to recharge. What good is that, if you don't get your car to start right away? It's not good AND when the listing reads "up to 40 starts on a single charge". I mean c'mon. Yeah, it's not a lie that 1 start is within the range of "up to 40 starts".but it's about 39 starts away from the truth. The seller offers an incentive of a free gift if you post a positive review, I have to assume that has something to do with some of the favorable reviews I read, as you don't know what it lacks until you actually need to use it. I am not impressed, I think there are better options available than this particular brand of jump starter.
CARKU Pro-10 black/red
91 Review
Efficient Charging With LST 7 Stages 5A Battery Charger - 3.3A 12V For Ultimate Performance
35 Review
Case Compatible With Halo Bolt Portable Car Battery Jump Starter 58830/44400/57720 MWh Charger. Power Bank Holder For Halo Power Station 100/For AC Outlet.(Not Fits For Halo Bolt Air, Box Only)
24 Review
Keep Your Battery Fully Charged With A Smart 12V Charger/Maintainer Featuring Winter Mode
28 Review
Tool set Ombra OMT82S12, 82 pcs, brown
22 Review
Xiaomi Mijia Ratchet Screwdriver 16 in 1 Screwdriver with Interchangeable Bits, 10 pcs, Black
22 Review
Rechargeable screwdriver OA-3,6F (433.0.2.00), 3.6 V, 1.3 Ah Li-ion, blister
46 Review
Bit and socket set Stels Tool set, 1/2", 1/4", CrV, plastic case 94 pcs, Stels, 94 pcs, black
46 Review