Dear All,
I have an off-grid system with the following setup. EasySolar 24/1600/40 with BMV-712 and CERBO Gx all this connected to a battery with 465 Ah capacity. All software's are up to date.
I have a very annoying behavior (I guess is from the BMV) of the estimated time to go and the SoC. In the BMV the capacity is set correct to 465Ah and the synchronization was done correctly when the battery was fully charged in absorption mode).(GX takes the V/A readings from the BMV)
The actual state -> consumed so far -225Ah (out of 465) but the SoC it still shows me 74% (of course the battery voltage tells me that is unrealistic and not so long ago I lost the communications when it was at 50%) !
I have an average consumption of around 40-47W constantly and in two days 48 hours, yields 2.16kWh energy. The battery capacity (theoretical) is 11kW, so that should be ~20% consumed energy. However the graph shows me a drop of only -11% (from 85% down to 74%). No solar charging at all yesterday and today!
Where this unrealistic "optimism" comes from?
Thank you, Endre