Asus AiGuru S2 - Manual (Page 18)

1-4 Chapter 1: Basic information
1.2 Battery information
A rechargeable battery powers the AiGuru S2 Wireless Skype Phone. Make sure that
the battery is fully charged to prevent interrupted communications due to power loss.
Fully charge the lithium ion battery before first use and whenever it is
depleted to prolong battery life.
Icon Indication
Battery is 55% to 100% full.
Battery is 25% to 55% full.
Battery is 10% to 25% full.
Turning red. Battery has no power.
Charging is required.
1.2.2 Removing and installing the battery
The rechargeable battery comes installed in the AiGuru S2. In the future, you may
need to replace the current battery. Follow the instructions in this section to remove
and install the battery if needed.
Before removing or installing the battery, make sure the phone is
turned off and not connected to a USB cable.
1.2.1 Battery power levels
The battery icon on the LCD screen helps you keep track of the remaining battery
power so you will know when you need to charge the battery. Note the battery icon
indicating the battery power levels.