I'm posting this as a way of getting updates on the state of LiFePo4 batteries on sailboats as of 2022, because I'm considering them for my house bank refresh.
I have searched for previous threads, but none are really up to date, as far as I can tell, and several just wander off into other areas.
Let's call them LFP for short.
So, here are my important questions:
Thanks!
I have searched for previous threads, but none are really up to date, as far as I can tell, and several just wander off into other areas.
Let's call them LFP for short.
So, here are my important questions:
- Are the Chinese(?) Amazon and eBay LFP any good? I now see a 100Ah 12V Group 27 or 31 with BMS for $300. Compare this to an equivalent Lithionics at $1700!
- Can I just drop them in and reprogram my Freedom 20/Link 2000R? In particular, I think I can program it to not float after acceptance; I can also reprogram the max charging current up, since I'm limiting it for my FLA bank, and my serpentine belt upgrade and PowerMax 125A alternator can provide plenty of current.
- How can I limit charging to 80% for storage purposes, i.e., for end-of-weekend charges?
- or should I design and build my own bleeder to bring them down to 80% for storage?
- related to that, can I implement some kind of switch to tell it to charge to 100%, for when I'm heading out to an anchorage?
- How to integrate solar?
Thanks!