Select the panel you want to replace
Voc
39.03 V
Vmpp
32.76 V
Isc
13.85 A
Impp
12.83 A
TcVoc
-0.23 %/°C
TcPmax
-0.29 %/°C
Pmax
420 W
Cells
108
The LONGi LR5-54HTB-420M is a 420 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.