I've recently improved my PV installation by installing a Luna2000 10kwh battery storage system.
I set SOC discharge limit to 20%. I think it's quite conservative in order to maintain LiFePO4 batteries healthy for longer. I have plenty experience with consumer drones and usually we land at 20% in order to not damage battery.
However, I'm not sure if this 20% limit is too much conservative and I can go deeper (let's day, 15 or 10%) without hurting battery package.
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