Sony PCG-GRV550 - Manual (Page 20)

VAIO Computer Quick Start
20
Charging a battery
You will need to charge the battery if battery power drops below 10 percent or
you have not used the battery for a considerable amount of time. The lithium-ion
battery supplied with your computer may be recharged at any time, whether you
wait until the battery is completely or partially discharged. Charging a partially
discharged battery does not affect battery life. If you charge the battery and find
that battery power is still low, the battery may be reaching the end of its life, and
you may need to replace it.
To charge a battery
You can charge the battery when the computer is on or off. However, the battery
will charge faster when the computer is off. Charging the battery takes several
hours. See your VAIO® Computer Specifications on the “Welcome” page for the
approximate time needed to charge your battery.
Battery icon Battery status
Charging
Fully charged
Discharging
No battery
✍
The battery supplied with your computer is not charged at the time of purchase.
✍
Charge the battery at temperatures between 50°F and 80°F (10°C to 30°C). Lower
temperatures require more time to charge.