Electronic problem

[Frank D]

We have a Lagoon 450, building year 2013 and very happy with it. We are encountering some electronic issues. When we are sailing (not using motor or generator) and we use our electric winches, our windmeters stop functioning because of a drop in power because the winches consume a lot of power. There is nothing wrong with our gel batteries and it always happens also when the batteries are fully loaded. We have met another Lagoon owner with the same problem and they solved it by putting extra or heavier electrical wires that feed the instruments. Is there anyone experiencing the same issue and who can confirm this ??

[2hullvenus]

Not specific to a Lagoon, but it sounds like the wiring to either the winches, the instruments or both, is insufficient and needs to go up in size.

Odds are it's the winch wiring they cut xorners on and the instruments are the most sensitive item affected by the voltage drop.

[rabbi]

Since it worked ok before this sounds like corrosion. Check all wire connectors from battery to the whinch as well as to the point where the instrument bus is powered.

Alternatively the batteries may be toast and can't handle the massive loads anymore.

To limit you hjnting efforts:
Have you checked the voltage at the battery when the whinch is running under load?
Have you checked the voltage on the instrument bus?

At least my raymarine instrument has the possibility to view the voltage on the bus.


Or buy a boat where one can raise the main by hand

[2Hulls]

I think 2hullvenus is on the right track based on what you have described.

Originally Posted by Frank D

There is nothing wrong with our gel batteries and it always happens also when the batteries are fully loaded.

Fully loaded? Or do you mean fully charged?

Dave