>Hi,
>
>We had a power outage today. Maybe it is a coincidental, maybe not, but now when I turn on my notebook, and hover the mouse over the battery, it says "8% available. plugged in, not charging."
>I checked that the power cable is connected.
>I clicked on the battery icon and it shows that the battery health is Excellent.
>I turned the notebook on and off a couple of times.
>I took the battery out and put it in.
>None of the above resolves the issue. If I remember correctly, before this outage, the battery was about 70% charged.
>
>What else can I try?

This article seems pretty comprehensive: https://www.groovypost.com/howto/troubleshoot-battery-not-charging-issues-windows-10/

If it's from a manufacturer such as Dell and you have something like Dell ProSupport you can contact them for assistance. If you don't have warranty support you can often start a thread on the maker's support forum.