Originally Posted by regex
So, a rookie question. Try not to beat me up too much.
Boat: 2009 Beneteau
I have a constant beeping going on when I have my magnum energy charger on float charge. To be specific, the main boat console has an annoying beeping sound when I turn on the charger. I have had the damndest time finding out why. My theory is that the batteries
are full (new boat to me) and this is the overcharge warning signal. Can anyone confirm? Pics attached.
The panel battery monitor
is beeping an alarm
because the battery
voltage is too high (or at least it thinks it is).
My suspicion is that the panel meter is reading one bank, and the inverter/charger is reading another.
So the first thing to do, is get out a DVM (digital voltmeter) and measure the voltage at the actual battery terminals, to determine what each battery is really at.
If you do have a battery at 15 Vdc, and it is not just a temporary equalization
charge, you do have a charging
problem and need to sort it out before the battery is fried.
If you have any additional charging sources, ensure they are off (ie, another shore power
If the voltage slowly decreases to normal fully charged resting (12.8 Vdc) then turn on each charger in turn to see which one is driving up to 15.0 Vdc and focus on that one.
If you only have the one charging system operating, and the panel meter is reading 15 Vdc, but no battery is 15 Vdc by separate DVM measurement, then the problem is in the panel battery monitor