Flux Portable Charger 4,000 mAh, Ultra slim External Battery Pack with built in Cords for iPhone 7, iPhone 6s, iPhone 6, Galaxy s7, Galaxy s7 Edge, (Premium Aluminum Power Bank)

Perfect. It is small enough to carry in your pocket and the self-contained cables make it easy to use and even more convenient. It is perfect to keep your cell phone working. Obviously, from its size and power, it is not meant for many charges. You can buy bigger chargers for that.I have bought three of them now and everyone who receives one, loves it. This is the perfect Christmas gift.

Really nice product if you want a super small charger. Charges quickly and has built in apple and android chargers. I wish the USB plug for charging the device was built in too, but of course that would come at a cost of size so I accept the trade-off.it's plasticky but strong. It's still pretty slick looking and I appreciate the light weight. I would definitely buy again. You won't even notice it in your pocket.

I bought the Flux Portable Charger near end of December 2016 for a 2 week trip. It was really light, gave me a full charge on my mobile, and I was pretty happy. I used it regularly during the trip. Afterwards, I always had it in my briefcase as a backup but only used it about once a week. Then it started to fail. I had to kind of hold it against my mobile while charging or else the connection would be lost. And then it became useless: the charging flicked on and off every couple of seconds regardless of how I held it. I rarely write reviews, good or bad. I loved the Flux when I got it. The design was really appealing, the weight/profile was great, and the charging speed and capacity were excellent. But the device lasted less than six months with relatively minimal use, under very controlled conditions (no moisture, no dust/dirt, no rough handling). I was extremely disappointed.

Charged the Flux, then tested it...charging two iPhones back-to-back. It took over two hours to charge the really low battery, but it did bring it back to full charge, then charged a phone with 1/2 charge. There was still battery life left in the Flux to charge again. There is an on/off button and I didn't realize I had turned it off when I was charging the second phone, so I couldn't figure out why it wouldn't charge. It took awhile to figure out. The directions are minimal--really minimal!

So helpful... Now my iPhone can charge on the go.

When it works, it works great, but unfortunately it is unreliable. Even when I know it is fully charged, it only works sporadically. I'd say it has only properly worked 3 out of 10 times I've used it. However, I bought one for my boyfriend 6 months ago and his always works so maybe mine is just a dud.

This thing dies so quickly. Lasted one trip and then didn’t work again :(

I like the flux charge you very much. It's very powerful for its size and the convenience of the building chords is great.