garmstro55
Senior Member
For the first time in 2 years we wintered our MS400 on the hard in the marina parking lot. Went I went to the marina in February to check on things it seems both 8D batteries went flat, both below 5 volts. I had turned off both battery switches before I left in the fall. It was shrink-wrapped and there was no water in the bilge (so the pump couldn't have been running) and I just can't figure out what drained the batteries. I did winter on the hard in 2020-21 with no issues. Both batteries are less than 2 years old. Any ideas what I should look for?
Note: Flooded cell batteries in NE Maryland.
Note: Flooded cell batteries in NE Maryland.
Last edited: