I know this thread goes somewhere other then OT, but it's universal thing. Anyway, I just received my EZOPower 15W/3.1A (MAX) Dual USB Wall Charger. Now of course, I have other USB chargers by Samsung, 1A & 2A. If I charge my phone, SII (1200mAh battery) w/ the 3.1A charger, would the battery completely charged under 1 hour? Or it doesn't matter, it will just it sweet time charging? Also does the USB chargers ramp it to w/e the max Amp once it plug in? Or does it usually do slow charge at first then building up to max Amp? Does the wattage really matter? I was thinking to get the Anker 20w/4A Dual USB Wall charger. But it was backorder. Thanks guys.