Join Date: Jan 2017
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Re: Realistic expectations for my house batteries
As soon as the LFP bank is Full, then the panel output is just as "wasted".
Don't worry about avoiding that "waste" for now, a minor issue, and inherent in proper sizing for variable weather conditions.
The key differences are the higher CAR and no need to get to Full.
So yes, you could in theory just expand the bank until every watt hour of solar output is captured.
But that would be silly if far larger than your usage requires.
Yes, how much solar you can fit and still have a beautiful well-sailing boat is usually your limiting factor.
Best to have a supplementary ICE source. LFP lets you "capture" all of **that** output to reduce run time drastically compared to lead.
Which means an owner that prefers fewer panels has greater flexibility.
So, size the bank for your usage requirements, use solar to reduce ICE runtime, yes LFP is a great improvement but not required, nor are its advantages directly tied to solar specifically
Last edited by john61ct; 04-11-2019 at 09:29 AM.