Griffin Technology Powerjolt Dual Universal (Black)

Powerjolt dual universal pwr 2 usb blk car charger.

Owner Reviews, Ratings, Comments and Criticism
Just got this charger from Walmart. Seems to be working pretty good. The "manual" that comes with the car charger says that it can supply 500ma per usb port at 5.2V. I was a little concerned about this with my Motorola Droid, since the wall charger that comes with the phone says it can do 850ma. But, I put the charger through a bit of a stress test with the Droid for around 20 minutes by turning the screen brightness all the way up, turning on turn-by-turn navigation with satellite view, turning on wifi and bluetooth, and streaming high quality music over the Pandora app at full volume. The battery didn't go down at all. I started out fully charged. Not sure how it would perform over a longer trip, but for now it seems good. I am wondering if 500ma per side means 1000ma if you only have one thing plugged in. UPDATE: I was able to charge the Droid from 60% to 100% in about 50 minutes while doing this kind of stress test scenario. One strange thing though... when I first plugged the phone in, nothing was happening. Then, I unplugged the usb from the charger and changed ports. It started actually charging. Then, I switched back and it started charging again. Then, I unplugged from the phone and replugged and nothing happened. So from that it would seem that you have to connect the phone first and then the cable to the charger. No problem for me. But then later I wanted to test it again so I unplugged from the phone and replugged. It started charging. So, I have had both results. I am pretty sure that this is something to do with the phone rather than the charger. I was using the USB cable supplied with the phone.