Dell Inspiron 15 (M5010, Early 2010) - Manual (Page 32)

30
Using Your Inspiron Laptop
Status Lights and Indicators
Battery Status Light
Indicator light status Computer state(s) Battery charge level
AC adapter solid white on/standby/off/
hibernate
<= 98%
off on/standby/off/
hibernate
> 98%
Battery solid amber on/standby <= 10%
off on/standby/off/
hibernate
off/hibernate
>10%
<= 10%
NOTE: The battery is charging when the computer is powered using the AC adapter.