YESPERCar Battery Jump Starter 2500A, 240Wh(66666mAh) Battery Charger Power Bank Jump Pack(8.0L Gas/5.5L Diesel), 12V Safe Jumper Box Portable with 3.2in LCD Display & PD100W

This thing is a beast! I have used it to jump start my car, my 5.3L suburban, my 6.0L 2500 HD silverado and even a dump truck for a friend of mine. We even used it to jump start a road paver! Also works great to charge your cell phone. The only complaint I have is the charging cord seems a little cheap and gets pretty hot. I have actually burned myself on the tip of it when I pulled it out of the cigarette lighter so just be careful. Other than that, this thing works amazing and holds a charge for a long time if it's not being used.

I've taken this all over the world for deployments and camping and I was able to charge my laptop, watch and phone at the same time in some very practical countries we th excellent capacity. The flashlight was nice during camping or blackouts. The only word of caution is the weight considering the capacity. I was ok with the couple pounds of power bank for knowing I could still power up my electronics regardless of location or activitied I was doing.

1st one worked great, was exactly what I wanted. It jumped started my v8 truck no problem. It recharges fast with my 100w usb charger. Ran my led table lamp for 5 hours. Recharged it ran and ran lights another two hours and I shut it off. Has nice sized jumper cable but are little short. The 12v car adapter charges fast. What's not to like was I going to recomend to family and friends.That is until the next morning I was going to do some more testing. Tried to turn it on nothing happened.Thought maybe I left it on and the battery ran dead, so tried to recharge it, would not charge the item is a brick, won't power on at all.Thought I would give it another try, recieved replacement today it was 75% charged so I went to charge it to 100% as recommended charged for less then 1 minute and bricked.Called amazon and they wanted me to go through manufacturer to trouble shoot. They sent me a link but the only thing it does is ask if you would like to see other products and for any problems they send you back to Amazon for replacement.

Unlike many other power stations, this unit outputs 100W of actual power over USB-C, which is great for the price. It also has 300Wh (confirmed by my testing) of energy storage, with a calculated efficiency ratio of ~85% via USB-C (I got 252-255Wh outputted on two separate tests).Very cool and unique design and doesn't look like the typical Chinese junk you'd find in a power pack or some other power stations. Not only is it a power station, but it has a vehicle jumping capability that most other power stations do not have, although you do need to purchase the jumper cables separately (any EC5 jumper cables on Amazon should work fine).Lastly, I had a small issue with mine where it would turn off when the wattage was above 200ma (the cutoff that it should auto power down) and more like 3-5 watts. They promptly replaced it after a couple of questions. I don't think my unit was entirely faulty because it just shut off prematurely when having a low power draw (even on the low power draw mode) and worked great for just about all of my devices. The replacement works just fine. Would definitely recommend!

Edit: 6 months on and it's still working great. It's a tank so doesn't always make it into my bag. But I enjoy it and it's great. Powers my laptop for hours on end.Original review: I got this guy, tested it out and then later took it with me on a 5 day backpacking trip. Now I'll say up front this is probably too heavy for serious backpacking, but I was doing more of a leisure trip in the woods.This guy powered my phone, my satellite communicator (Zoleo), my headphones, and most impressively: 10 hours of projector (Anker Capsule 2). Just amazing. It still had about 20% in the tank after that trip.One thing I've really enjoyed is that it tells me the battery draw in watts on the main display. This means I can get a very clear idea how much power I'm putting out and how much life the battery probably has remaining. It's been pretty awesome.All in all this is the perfect middle ground between an anker battery and one of those power stations. Still small enough for a backpack but large enough to be a deep well of power.

Initially it charged up to 100% but then I tried to use my CPAP and within 5 minutes it dropped down to 91% when I plugged it in it only charged to 94%. So then I went on a little quick drive I plugged in my cell phone charged my cell phone all the way up battery went down to 79%. I plugged it back into the charger and now it only goes up to 84% charge it won't take anymore I need this for a road trip tomorrow I'm going camping so hopefully this works but this one may have to go back.