I usually charge it for about three days, and the charging time is about two or three hours. I sometimes forget to charge because of too many things, leading to charge and spend some time, originally plugged in is also possible, before I have a few times is charged to use, but feel connected to the line drag to drag the interface is not very good, no longer so used, so to develop a good habit, every three days after learning to charge.
The charging time is about 2 to 4 hours