The blinking amber light means the battery is not receiving a charge and is at less then 10%. Try a reset on the system first. Disconnect the battery and unplug the adapter. Now press and hold the power button for 30 seconds. Then reconnect everything and try again. Also restart the system and at the Dell splash screen start tapping F12. Run system diagnostics and pay special attention to battery health and the adapter results. You can also at the Dell splash screen start tapping F2 and check the adapter and battery in the BIOS in addition to diagnostics.
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