TYLT Smartphone External Battery Pack: Slim Boost Universal Smart Phone Charger - Portable Rechargeable Cell Phone Power Bank with Micro USB Cable Connector and Micro-USB Cord for Charging - Black

This product is good because it’s compact; however, the charge is slow and doesn’t get a full charge of a dead phone. It’s a quick rescue when you been to be immediately rescued. I bought two of them so far.

Slim and light but doesn't last very long. Use as an emergency source of power.

I love the size even though I thought it was going to be a little flatter.

I love the size. Super easy to take on the go but it dies way to fast. My phone was at 19% and the charger died when my phone hit 39%. Not worth the money.

Nice portable device to get your phone a little more juice in a pinch. Used it a few times to charge my iPhone. Charged around 50% before dying. It also charges your phone pretty fast. If you die at the end of the day and find yourself without a charger this can help you get through the rest of the day.Only thing is I wish this was a little thinner to keep in my wallet. I tried for a few week however my wallet became to thick and started to hurt my leg after having it in there for a few days.

I was skeptical but am pleasantly surprised at how well it works for my needs. It is thin and strong enough that I carry it in my wallet in a credit card slot, hasn't broken or cracked so far. It is fairly low capacity but can completely charge my vape, flashlight, and a small cell phone. It won't completely charge a full size cell phone but would charge it some. Love the built-in micro USB cable, don't have to carry one. Recommended.

Does not fit I-phone 6S

You need to make sure to click the button to get it to charge. I slipped it into a passport holder, so that I could charge my phone instead of hunting down an outlet in the airport. It was a lifesaver so many times when I was on my trip. I'm going to buy another one as a backup, and maybe get one for my sister's birthday.