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--- opinion:frater_secessus:chariging_lithium_to_soc [2022/05/23 13:22]
frater_secessus [charging approaches]
+++ opinion:frater_secessus:chariging_lithium_to_soc [2022/05/23 13:23]
frater_secessus removed
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-It is an issue if you need to pull 30A out of the  50A bank overnight:  leaving ≥20% SoC by morning means you'd have to go into sundown with ≥80% SoC.  Not so much wiggle room there.  In that scenario I might charge-and-stop to ~14v (or whatever consistently yields 100% SoC with your system), minimal/no absorption duration, then play with lower floats like ~13.35v to see where SoC settles.
+It //is// an issue if you need to pull 30A out of the  50A bank overnight:  leaving ≥20% SoC by morning means you'd have to go into sundown with ≥80% SoC.  Not so much wiggle room there.  In that scenario I might charge-and-stop to ~14v (or whatever consistently yields 100% SoC with your system), minimal/no absorption duration, then play with lower floats like ~13.35v to see where SoC settles.
 A more precise way to do it would be to use a controller that talks to a shunt and could hold the bank at a given SoC based on coulomb-counting.  Should be doable with pi or arduino, or maybe some of the more network-centric gear like Victron already has that functionality.  I imagine in a few years the feature will be commonplace.

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