Griffin Technology Powerjolt Dual Universal (Black)

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...Read more

We have several Palm Pre's to charge while driving and have attempted to use different car chargers. This charger stands out as perhaps the best of the lot. It is very small, provides plenty of power, and doesn't get hot. If you want a well made, small, easy to use charger that will handle charging two smart phones at the same time ... this would be a great choice.

I bought this charger to use in my vehicle to charge, iPhone, Samsung Magnet, Motorola S9 headphones, and Motorola Razr. It works for every one of them. The two usb ports allow me to use the data cable that came with the phones or buy ones to go with the phones. Also the ability to charge 2 devices at once is a great thing. The unit I bought from amazon is actually my second one for another vehicle (return customers to me are a great indication of a good product). This unit is very small and can easily be tucked away somewhere in the car when not in use.