I have 4x Pylontech US3000s.
My Min SOC is (in general) set to 20%.
I have a few questions around best practice with these batteries:
- Is 20% ok for a minimum?
- In general, what happens on a daily basis is:
- The batteries deplete to 20% overnight, then the grid takes over
- Around 7am, the panels start generating, and the batteries charge to ~30% before they are even considered by the system to be used.
- Something heavy will kick in around 9am (maybe a geyser, maybe oven, washing machine, etc). It will require more than the panels are currently generating, so the batteries will be called upon, and they’ll drop to about 25%.
- Then, they’ll generally charge to 100%, maybe dropping to 90% once or twice during the day to augment the panels for a particularly heavy load.
So, the question is: Is that usage pattern ok, or will it kill the batteries?
It’s really convenient, since I don’t have to think about anything (except loadshedding, where I increase the Min SOC), but you read about “number of cycles in a battery’s lifetime”, and wonder if this pattern disproportionately increases the cycles that have been used?