Battery draining

[Kase]

I have a 2018 Yamaha 212x. Dual battery with a DSVR system. My house battery loses 1-2 volts a day when on the water. House battery is brand new. Was showing 13.4 volts upon install. After one day of boating it was down to 12. I charged it back to 13. Next day it was down to 11.8 volts. We don’t use our stereo when floating. It seems something is excessively drawing power, or the stator isn’t doing it’s job. Is there a way to test the stators, or test the DSVR output?

 

[tdonoughue]

Sounds like you have a voltage leak. Those are horrible to trace. Basically you need to get an ammeter (one of the functions of any normal multimeter), turn everything off that you can other than the DSVR. Start at the fuses and see which circuits are drawing power, even while off. Then you need to go to each item on that circuit and disconnect it until you find the item that is creating the draw. You can normally expect a little draw from things like the stereo (it will be keeping the memory alive with a slight draw), but it sounds like something is drawing a lot...