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All replacements

Find replacement for Qcells Q.TRON XL-G2.3/BFG 620

620 W TOPCon solar panel with 156 cells. Voc 56.67 V · Isc 13.76 A · TcVoc -0.24%/°C.

Select the panel you want to replace

Show only panels with matching cell technology

Compatible Replacements

68 panels found · 4271 panels excluded

Qcells Q.TRON XL-G2.3/BFG 615

615 W

TOPCon
91Good match
ParameterOriginalReplacementDeviation
Voc56.67 V56.39 V0.5%
Vmpp47.5 V47.3 V0.4%
Isc13.76 A13.71 A0.4%
Impp13.05 A13 A0.4%
TcVoc-0.24 %/°C-0.24 %/°C±0.000 %/°C
TcPmax-0.3 %/°C-0.3 %/°C±0.000 %/°C
Qcells Q.TRON XL-G2.3/BFG 625

625 W

TOPCon
91Good match
ParameterOriginalReplacementDeviation
Voc56.67 V56.95 V0.5%
Vmpp47.5 V47.7 V0.4%
Isc13.76 A13.82 A0.4%
Impp13.05 A13.1 A0.4%
TcVoc-0.24 %/°C-0.24 %/°C±0.000 %/°C
TcPmax-0.3 %/°C-0.3 %/°C±0.000 %/°C
Tongwei TWMND-78HD625

625 W

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

625 W

TOPCon
90Good match
ParameterOriginalReplacementDeviation
Voc56.67 V56.8 V0.2%
Vmpp47.5 V47.71 V0.4%
Isc13.76 A13.74 A0.1%
Impp13.05 A13.1 A0.4%
TcVoc-0.24 %/°C-0.25 %/°C±0.010 %/°C
TcPmax-0.3 %/°C-0.3 %/°C±0.000 %/°C
Waaree Energies BiN-17-620

620 W

TOPCon
88Good match
ParameterOriginalReplacementDeviation
Voc56.67 V56.71 V0.1%
Vmpp47.5 V47.44 V0.1%
Isc13.76 A13.83 A0.5%
Impp13.05 A13.07 A0.2%
TcVoc-0.24 %/°C-0.26 %/°C±0.020 %/°C
TcPmax-0.3 %/°C-0.3 %/°C±0.000 %/°C
JinkoSolar JKM625N-78HL4-BDV

625 W

TOPCon
85Good match
ParameterOriginalReplacementDeviation
Voc56.67 V56.95 V0.5%
Vmpp47.5 V47.54 V0.1%
Isc13.76 A13.8 A0.3%
Impp13.05 A13.15 A0.8%
TcVoc-0.24 %/°C-0.25 %/°C±0.010 %/°C
TcPmax-0.3 %/°C-0.29 %/°C±0.010 %/°C
Waaree Energies BiN-17-615

615 W

TOPCon
85Good match
ParameterOriginalReplacementDeviation
Voc56.67 V56.55 V0.2%
Vmpp47.5 V47.27 V0.5%
Isc13.76 A13.78 A0.1%
Impp13.05 A13.01 A0.3%
TcVoc-0.24 %/°C-0.26 %/°C±0.020 %/°C
TcPmax-0.3 %/°C-0.3 %/°C±0.000 %/°C
Seraphim SRP-635-BTZ-BG

635 W

TOPCon
83Good match
ParameterOriginalReplacementDeviation
Voc56.67 V56.64 V0.1%
Vmpp47.5 V47.31 V0.4%
Isc13.76 A14.13 A2.7%
Impp13.05 A13.43 A2.9%
TcVoc-0.24 %/°C-0.25 %/°C±0.010 %/°C
TcPmax-0.3 %/°C-0.29 %/°C±0.010 %/°C
Tongwei TWMND-78HD630

630 W

TOPCon
83Good match
ParameterOriginalReplacementDeviation
Voc56.67 V57 V0.6%
Vmpp47.5 V47.88 V0.8%
Isc13.76 A13.78 A0.1%
Impp13.05 A13.16 A0.8%
TcVoc-0.24 %/°C-0.24 %/°C±0.000 %/°C
TcPmax-0.3 %/°C-0.28 %/°C±0.020 %/°C
Perlight Solar PLM-630DH8N-156

630 W

TOPCon
83Good match
ParameterOriginalReplacementDeviation
Voc56.67 V57 V0.6%
Vmpp47.5 V47.88 V0.8%
Isc13.76 A13.78 A0.1%
Impp13.05 A13.16 A0.8%
TcVoc-0.24 %/°C-0.25 %/°C±0.010 %/°C
TcPmax-0.3 %/°C-0.3 %/°C±0.000 %/°C
Ulica Solar UL-625M-156ADGN

625 W

TOPCon
83Good match
ParameterOriginalReplacementDeviation
Voc56.67 V56.95 V0.5%
Vmpp47.5 V47.8 V0.6%
Isc13.76 A13.8 A0.3%
Impp13.05 A13.08 A0.2%
TcVoc-0.24 %/°C-0.25 %/°C±0.010 %/°C
TcPmax-0.3 %/°C-0.29 %/°C±0.010 %/°C
Qcells Q.TRON XL-G2.3/BFG 610

610 W

TOPCon
82Good match
ParameterOriginalReplacementDeviation
Voc56.67 V56.11 V1.0%
Vmpp47.5 V47.1 V0.8%
Isc13.76 A13.65 A0.8%
Impp13.05 A12.95 A0.8%
TcVoc-0.24 %/°C-0.24 %/°C±0.000 %/°C
TcPmax-0.3 %/°C-0.3 %/°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

56.67 V

Vmpp

47.5 V

Isc

13.76 A

Impp

13.05 A

TcVoc

-0.24 %/°C

TcPmax

-0.3 %/°C

Pmax

620 W

Cells

156

Bifaciality

80%

Length

2462 mm

Width

1134 mm

Thickness

35 mm

Weight

35.4 kg

The Qcells Q.TRON XL-G2.3/BFG 620 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
Q.TRON XL-G2.3/BFG 610610 W56.11 V13.65 A
Q.TRON XL-G2.3/BFG 615615 W56.39 V13.71 A
Q.TRON XL-G2.3/BFG 625625 W56.95 V13.82 A
Q.TRON XL-G2.3/BFG 630630 W57.23 V13.88 A
Q.TRON XL-G2.3/BFG 635635 W57.51 V13.93 A

Frequently Asked Questions

What specs must match when replacing the Qcells Q.TRON XL-G2.3/BFG 620?

The most critical specs to match are: cell count (must be exactly 156), Voc close to 56.67 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 Qcells Q.TRON XL-G2.3/BFG 620?

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 Qcells Q.TRON XL-G2.3/BFG 620.