The first charge given to the unit using the USB connection cable takes longer than noted in the manual?
We recommend that the first charge given is done from the USB charge cable connected to a PC or lap top. The reason for this is that the first charge will take the longest (between 4 – 6hours). Like most new devices using a lithium ion battery, the first charge will always take longer than subsequent charges. Please keep the charger connected to the USB until the central LED (B) turns from red to green.