Select the panel you want to replace
Voc
40.69 V
Vmpp
33.88 V
Isc
12.21 A
Impp
11.52 A
TcVoc
-0.25 %/°C
TcPmax
-0.34 %/°C
Pmax
390 W
Cells
120
The Risen RSM40-8-390M is a 390 W solar panel. Finding a compatible replacement requires matching the original electrical characteristics — particularly Voc, Vmpp, Isc, and temperature coefficients — to ensure safe operation within the same string.
Use the form above to find panels that match these specifications. Then verify the replacement in the String Compatibility Calculator with your inverter.