Originally Posted by Corrigano
My wife and I are relatively new to sailing, but have decided to retire early, sell up, buy a new Seawind
1260 Catamaran (available next year) and live on board.
We are considering various upgrade options, one of which is Lithium batteries. YouTube is currently our primary source of information and each of the main channels/sailors we follow recommend the upgrade. The specific source of easily understood information was from Gone With The Wynns and at first glance it looks as though we need something very similar to their set up. That is 4 x Relion 300 AH batteries for the house bank and 2 x 100 AH batteries for the two engines. Unfortunately the manufacturer upgrade costs the same or more for half of the power.
We will either launch from the Vietnam/Thailand area or cost permitting ship it to another location.
Can anyone help with the following questions please?
1. What should we expect to pay for this system, understanding that we may need a couple of additional items.
2. Does that price
including fitting from a professional reliable company?
3. Do those companies operate within easy travelling distance of the launch area, or would we need to ship the Catamaran for supply and/or fitting?
Apologies if these are really simple/silly questions and please forgive our naivety. Any and all help would be greaty appreciated!
There will be various prices to do the same job.
But before this you need to evaluate your use case.
Beware of fan boy or sponsor
sources whose info may be severely biased.
Decision making factors:
1. Sensitivity to voltage sag?
2.Sensitivity to battery
3. Sensitivity to initial cost?
4. Sensitivity to ICE powered charging
5. How frequently will you be away from shower
power and for how long?
6. How long will you own the boat?
All of these things and more should be evaluated, before making the decision to go LiFePO4
If you have definitely decided, the cost will depend on who does it, with what products, based on what design?
The products and design can be all over the map.
As for who does it, it would likely play out:
1. Manufacturer - most expensive. But the manufacturer has a lot invested to keep you happy if something goes wrong.
2. Skilled professional. Slightly less expensive, but the good ones are also invested in keeping you very happy.
3. Boat bum for hire. Run away.
. This is tricky and requires an honest self assessment. Are you highly knowledgeable of all marine electrical
standards and sound practice, as well as LiFePO4
specific requirements? If not, you will have a lot of learning
and skills development ( not just book reading or YouTube watching) to do, to complete the job safely and effectively.
That you appear to be contemplating use LFP for start batteries, indicates you are no where near there.
Lastly, if you don’t have the manufacturer install the electrical
system, how do you plan to get it to where it will be done?