Good morning dear users, I would like to ask you a doubt. Currently I would like to expand my existing system with an off-grid system, making targeted interventions in several steps. I currently have a 3.2 kW photovoltaic system, to which I would like to add a first self-built storage tank. For this reason I purchased 16 Eve lf105 cells, a 150A 16S Daly home appliance BMS, and a 5A active Daly balancer. In this way I should have a nominal 5375Wh storage unit, to which subsequently if everything works as I expect, I would subsequently add another one. Now I need to replace my inverter with a hybrid one and my choice fell on a Victron energy Multrigrid II gx 5000. In fact, I thought that in the event of expansion of the photovoltaic modules, I could add another one in parallel, in this so if there were to be a fault with one of the two grills, I would always have one working in any case.
The first question I ask you for help with is whether you think the sizing is correct; reading the datasheets, I see that the inverter supports 4kW, therefore within the 3.2kW of the photovoltaic panels, and then supports 48V storage, in line with the 16S that I am building.
As a second doubt, I don't understand whether the inverter needs one or more Victron energy SmartSolar MPPT modules, also because the meaning of this tool escapes me, as well as the correct size.
Thank you infinitely for the support
The first question I ask you for help with is whether you think the sizing is correct; reading the datasheets, I see that the inverter supports 4kW, therefore within the 3.2kW of the photovoltaic panels, and then supports 48V storage, in line with the 16S that I am building.
As a second doubt, I don't understand whether the inverter needs one or more Victron energy SmartSolar MPPT modules, also because the meaning of this tool escapes me, as well as the correct size.
Thank you infinitely for the support