In the USB 1.0 and 2.0 specs, a standard downstream port is capable of delivering up to 500mA (0.5A); in USB 3.0, it moves up to 900mA (0.9A). The charging downstream and dedicated charging ports provide up to 1500mA (1.5A). - ExtremeTechIf you're charging your phone through your computer, you're probably just using a standard or charging downstream port, limited to the slower power ratings of the specification. Switch to a dedicated wall charger and check to make sure it's a high powered charger so that you're not simply drawing a charge at a lower power rating. If you insist on charging through your computer (as you sync, for example), you might also be throttling your charging speed if you're connecting your phone via a USB hub. Many USB hubs aren't rated for very many amps per USB port, so check the power rating or switch to a direct connection.
We upgraded our chargers around the home and the difference in speed is astounding. It's well worth the nominal upgrade.
MORE USB AND PHONE CHARGING ON APARTMENT THERAPY
• How to Never Find Yourself With A Drained Cell Phone
• Charging In The Dark: Right Side Up For Cell Chargers
• How To: Upgrade a Wall Outlet to USB Functionality
• RCA's "Best of Innovation" USB Wall Plate Charger
• Outlet Management: 3 Space Saving Socket Chargers
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