I'd like to recommend you a smart&swift iPad PC USB charger. It can help you solve the charging problem that the iPad 3 needs a high-voltage USB charging. It's the right device for charging your iPad 3. I bought a RAVPower RP-UA01charger for my iPad 3 at Amazon a week ago. It allows me to charge through my laptop usb port, usb car charger, or an underpowered usb wall charger. It's really convenient.