Low 12V battery voltage causing issues? (Update: Yes)

[Snakebitten]

You could always just put the battery on a smart charger and once the charging cycle completes, (overnight?) confirm that the symptoms have gone away?

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[Spiffy]

Dang I just wrote a duplicate to these issues because I couldn't find this post.
Anyway I did put a charger on it all night. You said to remove and charge. Is there a difference between charging in or out?