man0war69

thank you for your reply. Changeover switch from inverter to eskom for the geyser invert is a great idea which i have not included. I do have a changeover switch on the growatt parallel inverter setup. Also have a timer on the geyser currently as which i'll set to only charge the geyser batteries during optimum sun times. Yes i realize that with the additional load of the geyser inverter drawing indirectly from the panles i may need to add some more panels on. I have added another lithium 150ah battery to my growatts so now have 3 x 150ah batteries to leave some wiggle room. They get fully charged by around 10:30 AM on a nice sunny day and around 12:00 on a cloudy day. Adding the extra load of chrging the additional batteries for the geyser may require additional pannels. I will try out with a simple 15amp charge first and see how that does to charge up my geyser batteries and increase charge current as required. I am planning on adding another 6 panels (3 x 550w to each of the two strings) before winter comes around. Problem i forsee with winter is less and weaker sun hours per day and more power used.

Hi there. I currently have my geyser running off Eskom and the rest of my house running off two growatt 5kva parrallel connected invertrs with 2 strings of 5x550w pannels. Each string goes to one of the two growatts. I just installed 2x7.68kwh lithium batteries and now have my old OPzS battery bank free. I have a spare 5kva Axpert Hybrid inverter, and of course now have a 48v 10kwh lead acid battery bank free to use. I wnt to connect my geyser (1.5kwh element) directly to my Axpert inverter powered by the lead acid batteries. Then use the Growatt parallel inverters as my "utility" input and set my charge times from utility on the axpert to only charge during certain hours of the day so that i can indirectly use the pannels connected to my growatts to charge my lead acid batteries during the day when there is suficient sunlight. Thtis way i do not need to buy any pannels to directly connect to my axpert for geyser and use the existing panels kind of in a dual sence. Attached is a diagram of what i want to do. Please give me your opinions on whether this will work or not.