Just wanted to leave my first impressions from this brand new emergency jumpstarter and battery bank by AVAPOW.It arrived fully charged and ready to be used right out of the box !Ordered it on Sunday night, by Tuesday morning it was already delivered without Prime.This thing is massive compared to my previous unit because it's twice the rated Amps.As you can see from the photos, it arrived in a well designed box, fully charged and ready to use.It comes with all the necessary accessories: USB C for charging the power bank [USB C in] and for charging USB C phones and other devices [USB C out and USB A out], 12V cigarette lighter adapter to power other devices such as camping and car inflating air pumps and other equipment that uses that traditional 12V car port, car battery charging cables which is the main interface to get your vehicle started [red and black prongs], product manual and warranty card.I'm no strange to these jump starters. I've been using an older, smaller unit from a competitor with about 2 years of use (two full winters) and I can tell you, that other unit saved my life at least 4 times these past very frigid winters. Especially this very last winter. Unfortunately, that older jump starter is having a hard time holding its charge so I started doing my research at Amazon for a worthy replacement.I came across this AVAPOW 4000A 27800mAh jump starter power bank and decided to give it a try and I'm not disappointed. Its build quality is great and I strongly believe this product will indeed be a worthy sucessor for my trusty older jump starters from 2 years ago.If you look at the photos, you'll notice that the instructions on how to jumpstart your vehicle are very detailed in the back of the adapter with the red and black prongs. Don't be intimidated by instructions or colored cables. This thing is completely fool proof and very easy to use.The "Special Note" behind the box doesn't make much sense though. Please disregard. I'll notify the manufacturer so they can fix that box.So far, I haven't had the need to use this product yet as it's still summer, but rest assured, comes winter I'll definitely be using and I know I'll be able to rely on this nicely designed and build product.I highly recommend this battery jumpstarter and power bank. You won't regret it.I'll update this review with actual usage and my impressions after using it for the first time. I'll try to make a video as well on how to use this, but like I said, there's no way to get it wrong. Just plug the prongs to your car, plug the black adapter into the battery brick, turn on the power button on the power brick and starts your vehicle. It's that simple!Update:A couple of weeks ago I got a chance to jumpstart a friend's sedan at the airport. It had been parked for about 4 days and since it's an older car with a 6 year battery, the cold cranking amps just ain't there anymore.You have to plug the black adapter into the battery brick BEFORE you connect the red and black prongs into your car's dead battery. That's VERY important.After you connect the black adapter, you push the power button on battery brick and plug it into your battery positive and ground ends.Just start normally your car that the jumpstarter will do its magic. It's that easy.I highly recommend you this jumpstarter.