In Reply to: battery education in need posted by Don B. on February 20, 2017 at 12:52:25:
You have received some good advice however I am still confused on at least one point.
What were you using to show the 25% charge? I do recall some batteries which had a charge indicator built into them but have not seen one in many years.
I would suggest you disconnect the battery for charging and testing. That will allow you to get an accurate conclusion on the batteries condition.