Solar Stack
Solar Stack
How it worksGuidesAdd Equipment
Sign in
Solar Stack

Free solar panel & inverter compatibility checker. Verify your PV string configuration is safe before installation.

Tools

  • Calculator
  • Panel Matcher
  • Inverter Finder
  • Inverter Compare
  • Panel Replacement
  • Cable sizing

Resources

  • Guides
  • How it works
  • Standards & Compliance
  • Data API
  • Replacement methodology
  • Add Equipment
  • Feedback

Legal

  • About
  • Privacy Policy
  • Terms of Service
  • Cookie Policy

© 2026 Solar Stack

All replacements

Find replacement for LONGi LR7-72HTDR-620M

620 W HPBC solar panel with 144 cells. Voc 53.11 V · Isc 14.82 A · TcVoc -0.23%/°C.

Select the panel you want to replace

Show only panels with matching cell technology

Compatible Replacements

79 panels found · 4260 panels excluded

LONGi LR7-72HTDR-615M

615 W

HPBC
94Good match
ParameterOriginalReplacementDeviation
Voc53.11 V52.96 V0.3%
Vmpp44.78 V44.63 V0.3%
Isc14.82 A14.75 A0.5%
Impp13.85 A13.78 A0.5%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.28 %/°C±0.000 %/°C
LONGi LR7-72HTDR-625M

625 W

HPBC
94Good match
ParameterOriginalReplacementDeviation
Voc53.11 V53.26 V0.3%
Vmpp44.78 V44.93 V0.3%
Isc14.82 A14.9 A0.5%
Impp13.85 A13.92 A0.5%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.28 %/°C±0.000 %/°C
LONGi LR7-72HGD-625M

625 W

HPBC
89Good match
ParameterOriginalReplacementDeviation
Voc53.11 V52.88 V0.4%
Vmpp44.78 V44.44 V0.8%
Isc14.82 A14.93 A0.7%
Impp13.85 A14.07 A1.6%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.28 %/°C±0.000 %/°C
LONGi LR7-72HTDR-610M

610 W

HPBC
88Good match
ParameterOriginalReplacementDeviation
Voc53.11 V52.81 V0.6%
Vmpp44.78 V44.48 V0.7%
Isc14.82 A14.69 A0.9%
Impp13.85 A13.72 A0.9%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.28 %/°C±0.000 %/°C
Horay Solar HS620TC-MHB-D

620 W

TOPCon
87Good match
ParameterOriginalReplacementDeviation
Voc53.11 V52.6 V1.0%
Vmpp44.78 V44.8 V0.0%
Isc14.82 A14.78 A0.3%
Impp13.85 A13.84 A0.1%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.28 %/°C±0.000 %/°C
LONGi LR7-72HGD-620M

620 W

HPBC
86Good match
ParameterOriginalReplacementDeviation
Voc53.11 V52.77 V0.6%
Vmpp44.78 V44.33 V1.0%
Isc14.82 A14.85 A0.2%
Impp13.85 A13.99 A1.0%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.28 %/°C±0.000 %/°C
Horay Solar HS610TC-MHA-D

610 W

TOPCon
86Good match
ParameterOriginalReplacementDeviation
Voc53.11 V52.92 V0.4%
Vmpp44.78 V44.16 V1.4%
Isc14.82 A14.59 A1.6%
Impp13.85 A13.81 A0.3%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.28 %/°C±0.000 %/°C
LONGi LR7-72HGD-615M

615 W

HPBC
82Good match
ParameterOriginalReplacementDeviation
Voc53.11 V52.55 V1.1%
Vmpp44.78 V44.44 V0.8%
Isc14.82 A14.73 A0.6%
Impp13.85 A13.84 A0.1%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.28 %/°C±0.000 %/°C
LONGi LR7-72HTDR-605M

605 W

HPBC
81Good match
ParameterOriginalReplacementDeviation
Voc53.11 V52.66 V0.8%
Vmpp44.78 V44.33 V1.0%
Isc14.82 A14.62 A1.3%
Impp13.85 A13.65 A1.4%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.28 %/°C±0.000 %/°C
Horay Solar HS615TC-MHB-D

615 W

TOPCon
80Good match
ParameterOriginalReplacementDeviation
Voc53.11 V52.4 V1.3%
Vmpp44.78 V44.6 V0.4%
Isc14.82 A14.72 A0.7%
Impp13.85 A13.79 A0.4%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.28 %/°C±0.000 %/°C
Yingli Solar YL600CF72 e/2

600 W

TOPCon
78Acceptable
ParameterOriginalReplacementDeviation
Voc53.11 V53.28 V0.3%
Vmpp44.78 V44.75 V0.1%
Isc14.82 A14.2 A4.2%
Impp13.85 A13.41 A3.2%
TcVoc-0.23 %/°C-0.24 %/°C±0.010 %/°C
TcPmax-0.28 %/°C-0.29 %/°C±0.010 %/°C
LONGi LR7-72HGD-610M

610 W

HPBC
77Acceptable
ParameterOriginalReplacementDeviation
Voc53.11 V52.44 V1.3%
Vmpp44.78 V44.34 V1.0%
Isc14.82 A14.65 A1.1%
Impp13.85 A13.76 A0.6%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.28 %/°C±0.000 %/°C

String Compatibility Calculator

Verify the replacement panel works with your inverter

Panel Matcher

Find all compatible panels for a specific inverter

Already have panels?

Find an inverter that fits your panel array with the right MPPT range and DC/AC ratio.

How the Algorithm Works

Learn how panels are scored and matched

Original Panel Specs

Voc

53.11 V

Vmpp

44.78 V

Isc

14.82 A

Impp

13.85 A

TcVoc

-0.23 %/°C

TcPmax

-0.28 %/°C

Pmax

620 W

Cells

144

Bifaciality

60%

Length

2382 mm

Width

1134 mm

Thickness

30 mm

Weight

33.5 kg

The LONGi LR7-72HTDR-620M is a 620 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.

Other models in this series

ModelPowerVocIsc
LR7-72HTDR-600M600 W52.51 V14.55 A
LR7-72HTDR-605M605 W52.66 V14.62 A
LR7-72HTDR-610M610 W52.81 V14.69 A
LR7-72HTDR-615M615 W52.96 V14.75 A
LR7-72HTDR-625M625 W53.26 V14.9 A

Frequently Asked Questions

What specs must match when replacing the LONGi LR7-72HTDR-620M?

The most critical specs to match are: cell count (must be exactly 144), Voc close to 53.11 V (within ±5%), and temperature coefficient TcVoc close to -0.23%/°C. If Voc differs significantly, the string voltage at extreme temperatures may shift outside the inverter's MPPT range. The replacement finder above pre-screens all candidates by these criteria.

Can I use a higher wattage replacement for the LONGi LR7-72HTDR-620M?

A higher wattage panel usually has a higher Vmpp or Isc, which can affect string voltage and current. Small increases (up to 10–15%) are typically safe if the other electrical specs align. The replacement finder shows a compatibility score — 'Exact match' means the specs align closely. Always verify the replacement in the String Compatibility Calculator with your inverter before installation.

What happens if the replacement panel has different voltage specs?

If the replacement has a significantly different Voc or Vmpp, the string voltage may shift outside the inverter's MPPT range, reducing energy production or causing faults. This effect is amplified at temperature extremes: at low temperatures, voltage rises by the TcVoc coefficient. The replacement finder automatically accounts for this — it scores candidates by how closely the electrical specs match the original LONGi LR7-72HTDR-620M.