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 Tongwei TWMND-78HD625

625 W TOPCon solar panel with 156 cells. Voc 56.8 V · Isc 13.74 A · TcVoc -0.24%/°C.

Select the panel you want to replace

Show only panels with matching cell technology

Compatible Replacements

78 panels found · 4261 panels excluded

Tongwei TWMND-78HD630

630 W

TOPCon
93Good match
ParameterOriginalReplacementDeviation
Voc56.8 V57 V0.4%
Vmpp47.71 V47.88 V0.4%
Isc13.74 A13.78 A0.3%
Impp13.1 A13.16 A0.5%
TcVoc-0.24 %/°C-0.24 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.28 %/°C±0.000 %/°C
Qcells Q.TRON XL-G2.3/BFG 625

625 W

TOPCon
91Good match
ParameterOriginalReplacementDeviation
Voc56.8 V56.95 V0.3%
Vmpp47.71 V47.7 V0.0%
Isc13.74 A13.82 A0.6%
Impp13.1 A13.1 A0.0%
TcVoc-0.24 %/°C-0.24 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.3 %/°C±0.020 %/°C
Qcells Q.TRON XL-G2.3/BFG 620

620 W

TOPCon
90Good match
ParameterOriginalReplacementDeviation
Voc56.8 V56.67 V0.2%
Vmpp47.71 V47.5 V0.4%
Isc13.74 A13.76 A0.1%
Impp13.1 A13.05 A0.4%
TcVoc-0.24 %/°C-0.24 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.3 %/°C±0.020 %/°C
Perlight Solar PLM-625DH8N-156

625 W

TOPCon
90Good match
ParameterOriginalReplacementDeviation
Voc56.8 V56.8 V0.0%
Vmpp47.71 V47.71 V0.0%
Isc13.74 A13.74 A0.0%
Impp13.1 A13.1 A0.0%
TcVoc-0.24 %/°C-0.25 %/°C±0.010 %/°C
TcPmax-0.28 %/°C-0.3 %/°C±0.020 %/°C
Ulica Solar UL-625M-156ADGN

625 W

TOPCon
88Good match
ParameterOriginalReplacementDeviation
Voc56.8 V56.95 V0.3%
Vmpp47.71 V47.8 V0.2%
Isc13.74 A13.8 A0.4%
Impp13.1 A13.08 A0.2%
TcVoc-0.24 %/°C-0.25 %/°C±0.010 %/°C
TcPmax-0.28 %/°C-0.29 %/°C±0.010 %/°C
JinkoSolar JKM625N-78HL4-BDV

625 W

TOPCon
87Good match
ParameterOriginalReplacementDeviation
Voc56.8 V56.95 V0.3%
Vmpp47.71 V47.54 V0.4%
Isc13.74 A13.8 A0.4%
Impp13.1 A13.15 A0.4%
TcVoc-0.24 %/°C-0.25 %/°C±0.010 %/°C
TcPmax-0.28 %/°C-0.29 %/°C±0.010 %/°C
Tongwei TWMND-78HD635

635 W

TOPCon
86Good match
ParameterOriginalReplacementDeviation
Voc56.8 V57.2 V0.7%
Vmpp47.71 V48.05 V0.7%
Isc13.74 A13.82 A0.6%
Impp13.1 A13.22 A0.9%
TcVoc-0.24 %/°C-0.24 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.28 %/°C±0.000 %/°C
JinkoSolar JKM630N-78HL4-BDV

630 W

TOPCon
84Good match
ParameterOriginalReplacementDeviation
Voc56.8 V57.08 V0.5%
Vmpp47.71 V47.7 V0.0%
Isc13.74 A13.86 A0.9%
Impp13.1 A13.21 A0.8%
TcVoc-0.24 %/°C-0.25 %/°C±0.010 %/°C
TcPmax-0.28 %/°C-0.29 %/°C±0.010 %/°C
Perlight Solar PLM-630DH8N-156

630 W

TOPCon
83Good match
ParameterOriginalReplacementDeviation
Voc56.8 V57 V0.4%
Vmpp47.71 V47.88 V0.4%
Isc13.74 A13.78 A0.3%
Impp13.1 A13.16 A0.5%
TcVoc-0.24 %/°C-0.25 %/°C±0.010 %/°C
TcPmax-0.28 %/°C-0.3 %/°C±0.020 %/°C
Qcells Q.TRON XL-G2.3/BFG 630

630 W

TOPCon
82Good match
ParameterOriginalReplacementDeviation
Voc56.8 V57.23 V0.8%
Vmpp47.71 V47.89 V0.4%
Isc13.74 A13.88 A1.0%
Impp13.1 A13.15 A0.4%
TcVoc-0.24 %/°C-0.24 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.3 %/°C±0.020 %/°C
Qcells Q.TRON XL-G2.3/BFG 615

615 W

TOPCon
81Good match
ParameterOriginalReplacementDeviation
Voc56.8 V56.39 V0.7%
Vmpp47.71 V47.3 V0.9%
Isc13.74 A13.71 A0.2%
Impp13.1 A13 A0.8%
TcVoc-0.24 %/°C-0.24 %/°C±0.000 %/°C
TcPmax-0.28 %/°C-0.3 %/°C±0.020 %/°C
Seraphim SRP-640-BTZ-BG

640 W

TOPCon
81Good match
ParameterOriginalReplacementDeviation
Voc56.8 V56.84 V0.1%
Vmpp47.71 V47.49 V0.5%
Isc13.74 A14.19 A3.3%
Impp13.1 A13.48 A2.9%
TcVoc-0.24 %/°C-0.25 %/°C±0.010 %/°C
TcPmax-0.28 %/°C-0.29 %/°C±0.010 %/°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

56.8 V

Vmpp

47.71 V

Isc

13.74 A

Impp

13.1 A

TcVoc

-0.24 %/°C

TcPmax

-0.28 %/°C

Pmax

625 W

Cells

156

Bifaciality

80%

Length

2465 mm

Width

1134 mm

Thickness

30 mm

Weight

33.8 kg

The Tongwei TWMND-78HD625 is a 625 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
TWMND-78HD630630 W57 V13.78 A
TWMND-78HD635635 W57.2 V13.82 A
TWMND-78HD640640 W57.4 V13.86 A
TWMND-78HD645645 W57.6 V14.05 A

Frequently Asked Questions

What specs must match when replacing the Tongwei TWMND-78HD625?

The most critical specs to match are: cell count (must be exactly 156), Voc close to 56.8 V (within ±5%), and temperature coefficient TcVoc close to -0.24%/°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 Tongwei TWMND-78HD625?

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 Tongwei TWMND-78HD625.