Find replacement for LONGi LR5-54HTDB-420M

420 W panel, 108 cells

Original Panel905

Select the panel you want to replace

String Compatibility Calculator

Verify the replacement panel works with your inverter

Panel Matcher

Find all compatible panels for a specific inverter

Panel Replacement Guide

Learn how to safely replace panels in an existing string

Original Panel Specs

Voc

39.45 V

Vmpp

33.07 V

Isc

13.54 A

Impp

12.71 A

TcVoc

-0.23 %/°C

TcPmax

-0.29 %/°C

Pmax

420 W

Cells

108

The LONGi LR5-54HTDB-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.