Combining Solar Panels Of Different Wattage

Though mixing different solar panels is not recommended it s not forbidden and things would be ok as long as each panel s electrical parameters voltage wattage amps are carefully considered.

Combining solar panels of different wattage.

So they usually put a diode between the panel and the battery. If you have no choice to do so use a separate but identical solar controller to fit onto each panel and then parallel the outputs of the solar controllers to the battery bank. This diode does lose about 5 percent of the power 5 volt drop so more with a 6 volt system less in a 24 volt 5 6 about 15 percent 5 24 about 2 percent. My question has to do with mixing those panels.

If they are sma. 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 relative consequences. No its not a wise idea as there are to many losses. If we have two solar panels with the same voltage but different wattage there is no problem.

Completely discharging it over time. I ll have 2 used panels with about 103 watts each 2 newer panels at 90 watts each one used 60 watt panel and maybe adding two of the 125 watt panels.