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Independent solar system means the power only comes from solar panels.
In the daytime with sunlight, the solar panels will power the loads and charge the battery;
when the sunlight is inadequate or on cloudy days, the battery will power the loads together with the solar panels;
In the night, the battery will power the loads independently until the next sunny day comes.
If the battery bank cannot stand to the next sunny day, the system will cut off the power
when the battery reaches its maximum discharging capacity.
When the load power is confirmed, the number and probability of consecutive
cloudy and rainy days for local region should be taken into consideration to determine
battery maximum powering time and how long it needs to fully charge the battery,
then, finalize the configuration based on these conditions.