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Our lead acid batteries have finally bit the dust so we're upgrading to LFP. Here's a description of the system design. It doesn't follow all the ABYC recommendations or all the best practices from this thread, but it seems like the right compromise of safety, cost, and convenience for our boat...

I'll be installing LiFePO4 this summer to replace our tired out lead acid house batteries. The Fortune and Winston cells look nice because their packaging is a bit more rugged and seems like they might hold up better with the constant motion of a sailboat. Reading through the forum here...