I was a bit skeptical (to say the least) when I was contacted by LuguLake to test and review this battery charger. I've charged my iPad and cell phone many times using batteries like this, but jump starting a car? Running my computer? After several e-mails concerning what it did (and how it did it), I agreed to accept a complimentary sample to consider for a review.I don't think there is anything else out on the market today that does all of the things that this little battery (about the half size of a paperback book) does. Here are some of the features that really impressed me:1) The sheer variety of the tips. You can charge anything, from cell phones to computers - just attach one of the tips and hook it up. This will likely be the most used function from my perspective, it states it will run a computer up to 3 hours. Since computers vary in power consumption, I would carry it as a back up, but would test it before I considered how long it would charge my personal computer.2) It has ALMOST every type of tip to charge mobile phones and devices. Well, except for the iPhone and iPad. If you are planning to use it to charge one of those, you will need to keep this specific cord in this kit.3) It has connectors to jump start your car. You connect the red clamp to the positive and the black clamp to the negative (I know this is standard, but I wish they had put a small mark on the clamp, I have added a label in case I can't read the instructions if I ever need to use it). Then you plug it into the battery and turn it on, you can then start your car. Once it is started you simply remove the cables.Will it work? That was the topic of several e-mails back and forth with LuguLake. They actually recommended that I disconnect my battery and use this to start the car to confirm it. In fact, they were very confident that it would work that way, since reviewers in other countries have done the test to prove it works. They actually ASKED me to try it so that I could confirm that it would work. They were confident enough of their product, that it impressed me. However, testing it this way was a bit out of my area of expertise, and I chose not to do so.Along this same line, you might wonder about the batteries that use the power plug in your car as an alternative. These are actually small trickle chargers that take about 20 minutes to charge your battery enough for it to start on its own. LuguLake has decided to make theirs in a way that will actually jump start the car, so you can get on your way immediately. It is supposed to support three jump starts on your car, but hopefully you will need only one.4) You can charge the battery either using the included charger for the car OR using your home power. Mine arrived fully charged. You need to "top it off" about once a month to make sure you have power when you need it, or make sure it is charged anytime you have used it. The car charger makes this easy if you are keeping it in your car.5) It has an emergency light, with two kinds of flashers. In order to turn it on, you hold the power button down for approximately 5 seconds. You can then cycle through the different modes.6) All of this comes in a nice black case about the size of a large hardcover book.I have been able to test all of the features except for the jump start feature - and actually hope I never need to test it under live conditions, and am happy to be able to recommend it to you based upon my experiences.NOTE- I originally wrote a review in May. However, over time I have noticed that this seems to drain faster than my other back up batteries. As a result, I have lowered this by one star to four stars.