Hi all,
I recently had a off-grid solution installed at my home.
14.3kWh (280A@0.71C rating = 200A) 52v Lifepo4 battery
10KVA Multiplus ii
23 x 410W panels
I know that lithium batteries prefer being in the 30 - 80% SoC range. However cell balancing occurs when the battery is charged.
I’m trying to have the optimal settings for longest battery lifespan.
At first I tried to limit the DVCC “max charge voltage” at a lower setting to limit the SoC, but upon reading articles on the forum (thanks @nickdb) I realised that this setting is not created to limit SoC (the risk of cell imbalance outweighs).
I live in Cape Town so currently my battery is fully charged by 8h30am (my SoC at sunrise is ±50%).
I’ve set my max charge rate to 20A. This allows my battery to charge over the course of the day and reach 100% in the afternoon, so that it spends little time at 100% full SOC (which from what I’ve read isn’t ideal for Lifepo4 batteries).
Question: Is there any reason why such a low charge current might be bad for the battery?
Thanks in advance,
Tittebie