Latitude E5420 dead, shows battery, white & Orange flashing battery light

My E5420 battery appears to be dead: if I unplug the AC adapter, it is turned off.

The battery passes Diagnostics. Diagnosis shows the battery is responsible for 74%, but wrong upward. The battery is 77%.

When the power adapter is plugged in, the battery light flashes amber four times, then a white, again and again.

So bad, just battery has not locked in place correctly. I took out and put back and it seems fine.

Tags: Dell Laptop

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