DESS: charging goes through 15 minute cycles

[UpCycleElectric (Jan)]

@ron_h

Have same problem SOC target is incorrect.
Battery size 96kWh and charge limit is 8000W to have a decent efficiency.

There is a technical limitation in play that the DESS execution control process, not sure whether located on the Cerbo GX (VenusOS) or on the VE-Bus device (ESS assistant) has a maximum resolution (precision) of one full (1.0%) percent SoC. See second part of this post:

Node-RED DESS implementation issues with 15 minute pricing

The solution is to port the ‘ScheduledSoC’ function to the VRM DESS scheduler (as an input to the scheduler, exactly as was functional in Node-RED DESS). That way we can finally sunset Node-RED DESS altogether. Alternatively and more elegant even, is to enable the ‘Scheduled charge levels’ under the ESS settings not to be silently ignorred with VRM DESS enabled. I bet you a good whisky that the latter suggestion will once and for all allow well defined easy to grasp (as in high level of abstract…