What does the Battery Status Lights mean on DELL Latitude E7250 laptop?

This article is about to tell you how to read DELL Latitude E7250 Battery Status Lights:

If the computer is connected to an electrical outlet, the battery light operates as follows:

Alternately blinking amber light and white light
An unauthenticated or unsupported non-Dell AC adapter is attached to your laptop.

Alternately blinking amber light with steady white light
Temporary battery failure with AC adapter present.

Constantly blinking amber light
Fatal battery failure with AC adapter present.

Light off
Battery in full charge mode with AC adapter present.

White light on
Battery in charge mode with AC adapter present.

DELL Latitude E7250 battery

DELL Latitude E7250 7.4V or 7.6V 6700mAh laptop batteries
Voltage: 7.4V or 7.6V
Capacity: 6700mAh (52Wh)
Battery cells: 4-cell
Chemical: Li-ion
Battery Color: Black
Condition: new original battery
Warranty: 9 months