User guide
ViewSonic VNB131 8
1.4 Notebook usage
Battery usage
ViewBook Pro has two sources of power supply – the battery and the power adapter.
Before turning on your ViewBook Pro, please install the battery or connect the power
adapter.
Installing the battery
1. Turn ViewBook Pro up side down and place it on a at surface;
2. Gently push the battery lock into unlocked position;
3. Slide the battery into its slot. When doing so make sure the battery goes exactly
along its slides. The battery should be able to get on its place smoothly, don’t force
it into its position if you have difculties installing it, or you may damage your View-
Book Pro or the battery.
4. Having pushed the battery to the end you will hear a click sound. Then push the
battery lockers into the locked position.
When using your ViewBook Pro for the rst time, we suggest connecting the power adapter
and allowing for the battery to charge for at least 8 hours. Please note that the battery will
reach its best condition only after several charge/discharge cycles.
The battery charging normally starts once the battery charge drops below 98%. First the
master battery is charged. Once it is full, the secondary (optional) battery is charged. The
discharge process is opposite – the secondary battery is used rst and once it is empty the
master battery takes over.