I bought this to use as a UPS for a Raspberry Pi. All Pi's are powered by USB. This USB charger has a pass through circuit so that it can send power to the Pi while still charging its battery. I experienced a power outage to the circuit the Pi was on and the battery worked perfectly as a UPS. My Pi didn't crash and I didn't have to worry about corrupting the SD because of the power cycle. Even nicer, this battery has two identical USB out ports so it could protect two Pi's at the same time. So far, I'm happy with the way that this battery performs.

This portable charger has been great. I have an older iPhone that the battery dies very frequently. This charger has done a great job of charging my phone right up. I have used it a lot and it has not died. It is important to keep it charged after you use it a few times.

Bought this item because i needed something to charge my phone on the go when i'm not in my car. I love this great little battery pack because it not only charges fast, it also holds about 2-3 charges depending on how low my phone battery % is. Wonderful product, charges fast, and also charges more than 1 device at a time! Great gift for others or yourself if you're a heavy tech user. Would recommend to my friends! No complaint!

Did not work with my phone as advertised.

Used it during our international trip to Australia and it was a life saver!!! It charged all our devices (phones & tablets) in no time and still retained lots of power. It did not take too long to charge the power bank to full. Within my family we had 5 different power banks and mine charged in lighting speed, I ended up having to buy more because my family was soooo impressed the the speed.

Works great just a lil on the heavy side!

Great charger. I can charge my iPhone a few times before needing to recharge the battery pack.

Awesome product charged my phone for days

Very good value

The price was good. It works great.