Sony PCG-GRX690P Primary User Manual page 22

VAIO Computer Quick Start
1 Insert the battery into the battery bay. If you want to charge more than one
battery, insert the second battery into the computer. See "To insert a second
battery" for more information.
2 Connect the AC adapter to the computer. The computer automatically
charges the battery as long as the computer is using AC power.
The battery indicator blinks while the battery charges. The battery indicator stops
blinking when the battery is fully charged.
✍
When using two batteries, the battery you insert first charges first. The second battery
you insert begins charging when the first battery is 85 percent full.
Battery Indicators
Battery indicator
status
On
Single blink
Double blink
Off
22
Description
The computer is using battery power.
The battery is running out of power.
The battery is charging.
The computer is using AC power.
B a t t e r y i n d i c a t o r s