Mugen keep producing gadgets that I need but never knew I wanted in the first place. The item in question is a USB voltage and current meter that measures the electricity flowing in a USB connection by connecting inbetween the charging USB port and the charger cable. This could be very handy if you are having charging problems and want to check the volts and amps.
The USB Charger Doctor costs only US$9.99 and is scheduled to ship in mid-December. It’s on my Christmas list!