Public Discussion Forum

Good morning all,

New to the Selene family here but have been aboard our Selene 53 for over a year now and couldn’t be more in love with her.

Currently out on the hook for a Thanksgiving raft up and working my way through some power issue. Through some ongoing troubleshooting i believe our parallel Outback inverters are starting to show some signs of end of life (dropping bank voltage dramatically overnight without any obvious heavy loads). Since these are likely original to the boat I was looking at replacing them with a Victron setup. Either a single Quattro 12/5000 (and some associated rewiring) or direct replacement with x2 MultiPlus-II 12/3000.

Curious if anyone has made this change or something similar and has any tips/pitfalls to avoid.

Interesting you have the 24v set up. I’m assuming some models were built on a 24V system while others on 12V?

ours is most certainly 12V

Thanks Mark I’ll take a read!

We’ve had this problem as long as we’ve had the boat and I first suspected the batteries (even tho they were replaced in 2021). I independently tested each battery and only found 1 that failed; which I’ve since removed from the bank.

I’ve zeroed in on the inverters since I’ve noticed that if cut them off at the isolation switch, I see a noticeable jump in voltage on the bank. Reading (ex: 12.1V with them on, 12.44V once they’re isolated). We’ve got one more night on the hook before returning to start the work week so today I’ve got the inverters completely off to see how the bank performs without them to hopefully rule the batteries out.

well Mark…. You’re not wrong! With the inverters off last night we saw clearly there are issues with the bank itself that need replacing. Believe I’m jist going to take the opportunity to upgrade the whole system to support the Victron monitoring.

After some research it seems like a lot of the 53s, especially the early 2000 models were 12V boats. While we’re not gearing up for big cruising in our immediate future I’m thinking I’ll hold off on the full update to a 24V Lithium upgrade and settle for something more of a bridging solution for the more moderate trips and anchorage that our in our future until retirement.

Initial thoughts are x8 Victron AGM 12V 240AH direct replacements along with a Multiplus-II 2x120 and cerbo. Still toying around with the inverter size, don’t want to short change us; but in SoCal waters, we’ve got the benefit of not needing to run the aircon or heat at the dock, let alone on the hook.

I’m sure I’ll be spending some time reading about your upgrade next. Unfortunately at 37, lugging around 3000lbs of batteries is in my future!

First of all, I hope this finds Mark recovering nicely and enjoying all the wonders of modern medicine!

fully committing to my upgrade project I was looking at cable runs and was curious what the group has come across

looking behind the port side electrial panel in the Pilothouse I can see a few cable runs built into the boat and seemly perfect for where I’ll need the connections from the inverters in the commissary and the shunt in the engine room to come from. Photo attached for reference.

Ive explored the run along the port side from the commissary to the galley. But nothing forward of the galley and into the pilothouse. I’m assuming maybe behind the cabinets in the master? If anyone has any experience on where these runs come out at, it could sure save me a lot of tearing compartments apart.

cheers!

Rick