Can any one recommend a good brand? I know that after market apple accessories are a hit or miss.

I bought one from istudio called doyoto (spelling?) that came with usb cable for 1090 thb, plugged the cable into my computer and it worked for the first 5 mins, then a popup appeared saying the usb port was overloaded. Tired in the on another computer and in car with same result stopped charging after 5 mins, took it back and tried new one with same results as well.

Ended up exchanging it for an official apple usb power adapter which I didn't need, but was the only thing they allowed me to get as it was the same price.

Belkin.