Thread: lithium ?
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Old 10-19-2019, 11:47 AM   #14
twistedtree's Avatar
City: Gloucester, MA
Country: USA
Join Date: Jan 2013
Posts: 4,968
Originally Posted by Donsan View Post
TT, how many amp hours of LFP batteries do you plan to carry for your house bank on your new boat?

Something in the 1400ah @ 24V range. It's probably serious overkill, but without a solid understanding of the electric loads, I'd rather err on the side of too much rather than too little. And that's nameplate rating, so figure 80-90% of that is usable.

Part of the uncertainty is because I haven't finalized what batteries I'm going to use, and they come if different quanta of capacity. Plus I'm leaning towards a redundant setup with two banks, so the capacity steps are pairs of batteries.. Several vendors sell ~300Ah batteries, so a bank of 4 would be 1200 ah, and 6 would jump up to 1800ah.
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