Mixing different brand 100W 12V panels in series
- Thread starter PaulLad
- Start date
Ampster
Renewable Energy Hobbyist
That is not a lot of Wattage anyway.
Here is the math on how it works - this is true for all series/parallel strings (even matching ones).
In series volts add - use the smallest amps.
In parallel amps add - use the smallest volts.
Use Vmp and Imp for these calculations.
These are my assumptions of the panels: (I used math to figure out the Vmp - how close was I?):
Panel1 Voc 22.6 Vmp 18.62 Imp 5.37
Panel2 Voc 23.1 Vmp. 18.48 Imp 5.41
Volts add 18.62+18.48=37.1
Use lowest amps - 5.37
Volts * Amps = Watts
37.1 * 5.37 = 199 watts
Those two panels are so close your penalty for putting them in series is only 1watt.
In series volts add - use the smallest amps.
In parallel amps add - use the smallest volts.
Use Vmp and Imp for these calculations.
These are my assumptions of the panels: (I used math to figure out the Vmp - how close was I?):
Panel1 Voc 22.6 Vmp 18.62 Imp 5.37
Panel2 Voc 23.1 Vmp. 18.48 Imp 5.41
Volts add 18.62+18.48=37.1
Use lowest amps - 5.37
Volts * Amps = Watts
37.1 * 5.37 = 199 watts
Those two panels are so close your penalty for putting them in series is only 1watt.
BryceFreeman
Ecoworthy Distributor
I often read online that it's not recommended to connect different brand panels together...but I think Rocketman's post is very reliable.
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