Dell E7240 owner manual

Alternately	An unauthenticated or unsupported non-Dell AC adapter is attached to your
blinking amber	laptop.
light and white
light
Alternately	Temporary battery failure with AC adapter present.
blinking amber
light with
steady white
light
Constantly	Fatal battery failure with AC adapter present.
blinking amber
light
Light off	Battery in full charge mode with AC adapter present.
White light on	Battery in charge mode with AC adapter present.