Bought this for my Nexus 5 to use on trips since Maps sucks the battery down without a charger.

I use it for my phone that has a terrible battery life--it charge my phone fast

I use the Waze GPS app and it sucks the battery down very quickly.

DOESN'T CHARGE THE BATTERY IN MATTER OF FACT IT DRAIN THE BATTERY

After a very short time, the S4's battery was dead

Charges the phone up to nearly 100% even with the location setting on high accuracy and using Google Maps as my GPS for the car (which really kills the battery fast).

Works great, charge faster than portable batteries.

It's important to note that this charger shows no sign of "overpowering" the phone, which would present a risk of cooking the battery or burning up the phone's voltage regulator circuitry that governs the charging rate.

My battery would deplete a little faster than other chargers charge.

With this charger plugged into my my phone it loses no battery when being used for navigation and even continues to charge.

I found that with other chargers, my phone would lose considerable battery when being used for navigation, even when it was plugged in.

Charges my phone quick and doesn't overheat the battery.

Perfect for keeping a cell phone charged while on the road and sucking down the battery because of roaming.

This actually drains the battery of my phone when I plug it in

I bought it as a back up to charge a dead battery on the road

I wonder if I'm hurting the battery or anything as the phone sits in my passenger seat while I charge it and make the drive home from work which is about an hour give or take 15 minutes

Everything I've got - including SD cards, batteries, chargers, etc. has been wonderful and worked exactly as it was supposed to, and the prices can't be beat

Worked as it should, no complaints.

and it still works as if got it the first day

Its exactly as described, in a very easy to open box so packaging won't give you plastic cuts.