S ZEVZO ET03 Car Jump Starter 4000A Jump Starter Battery Pack for Up to 8.0L Gas and 7.0L Diesel Engines, 74Wh Portable 12V Jump Box with USB Ports, LCD Display, Storage Case, and LED Light

I knew the jump starter was better than some of the others because it was over 90% charged when I received it after sitting in a warehouse for some time. I charged it fully and then packed it away for use later. After 5 months I needed to use it and found it to still be at 100% charge. I used it on a car that a faulty alternator had drained the battery so much to where 2 other jump starters failed to crank the car. The Zevzo cranked the car immediately upon turning the ignition. I have since used it several times and it has worked every time. It is built sturdy and comes in a very nice carryin

I just opened the package and the unit was at 70% charge right out of the box. Even though the sticker says to charge it before use, I wanted to see if it could handle an immediate test. My car battery was completely drained—absolutely dead, with not even a single light turning on.The exact moment I connected this jump starter, my car lights turned on instantly. The engine started right up without a single hesitation. It didn't even care that it was jumping a V6 from total zero while only starting at a 70% charge.I couldn't be happier with this purchase. This product easily deserves five stars

This jump start battery really holds a charge well and has worked where other jump starters failed. It recently started three vehicles within 24 hrs.

Great product easy to use right out of the case plug cords into box connected it to battery hopped and did not wait anytime hooked it up jumped right in truck started up better than it had in a long time very powerful and it is a big block V8 so if you need something cheap but will definitely get the job done and with the type C charger port you can charge it while you're on the go must have

Great product. As normal batteries don’t fail when you have $200 to sitting around. I bought this to get me through to next payday without constantly asking for jumps. Works as expected, simple to use. On a Honda each jump will cost you about 10% of the units battery, so you can realistically get 10 jumps max on a full charge. That being said I recommend recharging after every jump if possible. Certainly it could probably go 5 jumps easily without getting dangerously low. It recharges easily and quickly using USB-C, just plug it in at home or work. You can also use it as a usb power bank but i

I have not used it yet, but the product feels well built, the flashlight and strobe settings work well. The directions were well explained and having a storage case that actually holds all the components is great. I'm sure the jump pack will be fine, looking forward to use it on a car in my driveway that will need to be started.

I left a portable fridge plugged into my car trunk outlet overnight and it drained the battery. So I tried another jump starter I had bought previously, but after several tries it didn't work. So I purchased the S Zevzo ET03, charged it for a couple of hours until it reached 100%, and when I connected it to my car, it started right up as if the battery was fully charged. I recommend it to anyone who wants to be prepared for any emergency

Came 80% charged, jumped my car and charged my car battery with no issues, worked perfectly. Bottom USB is for fast chargers, first day this product was more than proved it was worth the $50 I paid. Absolutely recommend.