What I didn’t understand is the calculation the size of the solar panel needed for like 200Ah
Hello, thanks for your question. The size of the solar panel capacity needed to recharge a 200Ah will also depend on the electrical load on the system and how long you use the load.
I will advice you to take our full course on Inverter and battery installation training. The specific lesson is here: https://stoplearn.com/courses/power-energy/inverter-and-deep-cycle-battery-installation-training/lessons/inverter-load-and-power-estimation-calculation/
if you think we did not understand your question, feel free to reply this.