Hi guys.
I have two (well I sold one) of these and I joined this forum just to tell everyone that the ORIGINAL USB cable does NOT charge the device properly.
As soon as I connected another USB charge cable (an old Nokia cable), with ORIGINAL adapter, it charged properly!
The orange light comes on with the ORIGINAL cable, but it doesn't really charge: When turned on, the charge light comes on, but Windows doesn't recognise it as charging for long. With a "better" cable (and ORIGINAL adapter) Windows shows it charging until charged.
I hope this helps.