I just purchased a one owner 1989 M20K. Low time, always hangared, mint condition. It just came out of annual, with a new battery. It sat for 2 1/2 months before I had a chance to fly it. Upon first preflight, battery only had 22 volts. Engine cranked once, but would not start. Previous owner always used a battery minder, as he did not fly much. Owner says that the battery drain is normal. My CFI says it should hold out for a few months, at least.
Are any of you aware of a constant drain on the battery, and if so, what is the source and what is the fix?
Thanks, this is my first post, and I look forward to the feedback.
