Hello, just had Gen 2 3.6kw inverter installed with 9.6kwh battery. Its working great, portal is far better than I anticipated but I have a question around the operating range. I note that minimum is 4% and maximum is 96%. The battery was marketed as having 100% DoD so can someone enlighten me as to whether this can be changed or, as I suspect, its a battery management thing that cannot. Thanks, Chris
Welcome Chris, If I remember correctly, your battery is actually bigger than the indicated capacity. GE then limit it to both protect the battery, and allow a bit extra for age-related drops in capacity, over time. The 4% is then locked as your minimum (it's probably actually about 14%, in reality), so there are a few percent left to power the inverter, in the event of no solar or grid power.
So you may see it going below 4%, which is safe, but when you get down to c.0% (probably 10% in reality) a safety grid charge will automatically kick in, bringing it back up a bit.
snecklifter Have a look at the Givenergy Knowledge Base.
snecklifter The maximum is 100%. The 96% you are seeing is the usable (100% minus the 4% reserve). If you change the reserve to 20% you will see the 96% usable change to 80%.
And if you're worried about the operating range, you really don't want to read the soc bug thread.
snecklifter Yep, that's another GE con. - I believe this is what you call false advertising. Their website still claims that you get 100% discharge on 9.6kWh battery.
Ok thanks, no way to alter that then. Yes, I agree, misleading at best!
I've always understood that 100% to 4% should represent the full capacity of your battery i.e. 8.2kWh in my case. Happy to be corrected or confirmed.
