Does anyone else struggle to charge their phones from their computers? My wall charger that came with the phone seems to be the only way to get my phone fully charged. I assume the difference is that USB provides .5 amps, but the OEM wall charger does 1 amp. I want that same charging speed in my car. None of the chargers in the sticky mention 1 amp capacity. Am I missing something here, or does everyone just use .5A chargers? btw, I have a 3000mah battery, so it of course takes twice as long to charge as stock. The 1A power of the wall charger is a necessity for me.