I have set my battery to maintain 45% charge in ESS
At the morning, when solar kicks in, all solar goes to the battery charging instead to the house grid consumption even the battery is at 45% or 46%. Then, when the battery pass 47% or so, the multiplus II starts converting to the grid. This create an not so optimized cycle so when the house needs more power and drain battery back to 45%, the multiplus II stop inverting and all the solar goes to the battery, creating another mini cycle of charging from 45% to 47% or so. This mini cycles repeated a lot around all solar day in winter with low sunlight.
Is any way that the multiplus II continue inverting from the MPPT and only charge batteries when there is a solar surplus and all the house consumption is feeded by the solar mppt?
Can you share some information about your configuration? (Which meter, how much units, core configuration, etc..)
ESS is supposed to always do “consumption first” and only charge the battery with what’s left after consumption. And it usually does that, unless instructed different.
yes the system do this very good, it works perfect since day 1, just if I put a % of battery, for example a 38%, the system priorize the bat charging first thing in the morning and then when the bat is up 1 or 2 % then start to consume from the battery and if the sun is low the bat go down to 38% and the cycle repeats. This just happens if I put the minimun % , if I quit the % the system works very good and the system do consumption first.
The meter is a carlo gavazzi monophase and the multiplus II 3000VA, it works really good since day one, just this minor thing, I think is because the system wants to be sure that the bat is at the % so it charge a bit, but the result of this is a lot of microcycles when the sunlight is low
