So they usually put a diode between the panel and the battery.
Mixing different voltage solar panels.
Mixing different solar panels in parallel maximum voltage on a string of modules must always be lower than maximum input dc voltage of the inverter.
Typically the mixing of solar modules from different manufacturers and of dissimilar voltages wattages and amperages is not recommended.
The only way to wire in additional panels and guarantee that the voltage of all strings would remain equal is to add the exact same.
However if you take certain factors into careful consideration you can easily achieve this goal.
Combining pv panels in series requires you to use panels with the same very close currents.
When connecting different solar modules it s not the different wattage it s actually the current for series connection and voltage for parallel connection that could drag down the.
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.
Also read why solar power panels are necessary for you.
If the panels are the same voltage and they both contain a diode to prevent reverse current then yes you can.
Panel voltage is additive when panels are wired in series.
Mixing solar panels of various voltage or wattage or produced by different manufacturers is a frequently asked question by most diyers.