When the load exceeds what the panel can harvest the battery makes up the difference.
Connecting solar panel directly to load.
The rule of thumb when connecting solar panels directly to a battery is never connect more than c 10 watts where c is the capacity of your battery.
A complete note on solar panel installation with calculation examples the dc load light fan etc is directly connected to the charge controller and can be fed up by two power sources.
A charge controller is basically an appliance that regulates or stabilizes the voltage produced by the solar panel the direction of current and prevents overcharging.
The load terminals on most charge controllers has both.
Dc fuse box attached to the load terminals of a charge controller.
Limited current amps rating lvd low voltage disconnect and it s connected to the battery via a mosfet fuse.
The liquid in the battery made bubbling sounds and boiled freely the hood was open and no danger of a spark.
Connecting solar panels to charge controller.
Exceeded for minutes to hours i used to connect a 60w solar panel to my car battery every few months and let it charge to equalize it i don t recall the peak voltage but it went over 15 5 for hours.
This is necessary because the current produced by the sun my vary depending on the intensity of the sunshine.
They can be wired in parallel.
On the other hand if our two solar panels have both different wattage and different voltage then parallel connection is not possible since the panel with the lowest voltage would behave like a load and would begin to absorb current instead of producing it with the.
As long as the solar pv panel can supply the load the battery will not be depleted.
Wiring the battery to the charge controller.
This is why you can t connect your solar panel directly to your battery.
If we have two solar panels with the same voltage but different wattage there is no problem.