b. Charging
Please charge the battery by the accompanied USB charing cable when the Red LED
blinks slowly. Plug the standard USB connector to an USB port of PC or notebook
and plug the Mini-B USB connector to the 5V DC-IN port of the keyboard.
In battery charge mode, the Red LED will blink fastly.
It will take around 4 hours to get the battery fully charged.
When the battery was fully charged, the Red LED will light up constantly.
The Red LED will go out in 2 minutes after the charging cable was unplugged.