Daniemj

I was considering the Pylontech batteries but have read somewhere on this forum that is seems that the infinisolar read a different voltage from the batteries that the BMS itself has and that it could create some problems. I also saw that the maximum amount of Pylontech batteries that could be connected together is 5. That will limit me in future if I want to expand on adding another inverter and more panels. one string of panels are on the west facing roof. The other on the North facing roof. The inverter limits the pv power output to 5000W, but in winter months or during cloudy days, it help having more panels since it provide 5000W for a longer period during any given day. I am aware that I will need more inverters if I want to deliver more solar power, but at this stage I want batteries that are capable of supplying a high current (5000W) if needed in order to charge an electric car, washing machines etc. I produce more power during the day that I can use daytime and I want a battery storage capable of giving me more flexibility in how and when I use it.

I would like to find out what will be the best batteries to go with the Infinisolar 5KW plus inverter. At this stage I do not have batteries, and I want to start with a minimum usable battery capacity of about 3-4kwh per day. I want batteries that could be up scaled to minimum 15kwh but maybe even 20+kwh per day in future. I have 28 x 265 W solar panels at the moment, but could always add another 5kw inverter in parallel (and panels) when needed. I do not want to start with batteries that would limit me on total capacity if I do expand further. I would prefer lithion ion batteries. I am assisting my parents (that live next to me) with electricity and I am also considering an electric car in the future. I do not want to go off the grid, but I do want to produce and store enough solar energy in future to sustain 2 houses and an electric car. At the moment I produce just enough energy in winter for my own consumption and in summer almost enough for both houses. (producing between 850-900kwh in winter months and between 1100-1200kwh in summer months). I am running the inverter in Grid-tie but once I have the minimum amount of batteries I can set it up in Grid -tie with back up and connect my generator to the inverter. When I do have enough batteries I want to start using that power at night time and during daytime the solar can charge my batteries and supply the load with Grid to back up any shortages. Any advice?