Find replacement for LONGi LGi7-54CHVD-420M

420 W HPBC solar panel with 108 cells. Voc 40.08 V · Isc 12.84 A · TcVoc -0.2%/°C.

Original Panel

Select the panel you want to replace

Same technology onlyShow only panels with matching cell technology

Compatible Replacements

16 panels found · 3694 panels excluded

LONGi LGi7-54CHVD-435M

435 W

HPBC

90Good match

Parameter	Original	Replacement	Deviation
Voc	40.08 V	40.1 V	0.0%
Vmpp	34.47 V	34.49 V	0.1%
Isc	12.84 A	13.29 A	3.5%
Impp	12.18 A	12.61 A	3.5%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LGi7-54CHVD-415M

415 W

HPBC

84Good match

Parameter	Original	Replacement	Deviation
Voc	40.08 V	39.72 V	0.9%
Vmpp	34.47 V	34.16 V	0.9%
Isc	12.84 A	12.8 A	0.3%
Impp	12.18 A	12.15 A	0.2%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LGi7-54CHVD-425M

425 W

HPBC

84Good match

Parameter	Original	Replacement	Deviation
Voc	40.08 V	40.44 V	0.9%
Vmpp	34.47 V	34.78 V	0.9%
Isc	12.84 A	12.88 A	0.3%
Impp	12.18 A	12.22 A	0.3%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LGi7-54CHVD-430M

430 W

HPBC

77Acceptable

Parameter	Original	Replacement	Deviation
Voc	40.08 V	39.74 V	0.8%
Vmpp	34.47 V	34.18 V	0.8%
Isc	12.84 A	13.26 A	3.3%
Impp	12.18 A	12.58 A	3.3%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LGi7-54CHVD-440M

440 W

HPBC

74Acceptable

Parameter	Original	Replacement	Deviation
Voc	40.08 V	40.46 V	0.9%
Vmpp	34.47 V	34.8 V	1.0%
Isc	12.84 A	13.33 A	3.8%
Impp	12.18 A	12.64 A	3.8%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Phono Solar PS435M8GFH-18/VSH

435 W

TOPCon

63Acceptable

Parameter	Original	Replacement	Deviation
Voc	40.08 V	40.06 V	0.0%
Vmpp	34.47 V	33.75 V	2.1%
Isc	12.84 A	13.35 A	4.0%
Impp	12.18 A	12.89 A	5.8%
TcVoc	-0.2 %/°C	-0.24 %/°C	±0.040 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Phono Solar PS440M8GFH-18/VSH

440 W

TOPCon

58Marginal

Parameter	Original	Replacement	Deviation
Voc	40.08 V	40.33 V	0.6%
Vmpp	34.47 V	34.01 V	1.3%
Isc	12.84 A	13.4 A	4.4%
Impp	12.18 A	12.94 A	6.2%
TcVoc	-0.2 %/°C	-0.24 %/°C	±0.040 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

München Solar MSMD430M10-HJT108DS

430 W

HJT

55Marginal

Parameter	Original	Replacement	Deviation
Voc	40.08 V	40.3 V	0.5%
Vmpp	34.47 V	33.49 V	2.8%
Isc	12.84 A	13.3 A	3.6%
Impp	12.18 A	12.84 A	5.4%
TcVoc	-0.2 %/°C	-0.24 %/°C	±0.040 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

München Solar MSMD435M10-HJT108DS

435 W

HJT

49Marginal

Parameter	Original	Replacement	Deviation
Voc	40.08 V	40.56 V	1.2%
Vmpp	34.47 V	33.75 V	2.1%
Isc	12.84 A	13.35 A	4.0%
Impp	12.18 A	12.89 A	5.8%
TcVoc	-0.2 %/°C	-0.24 %/°C	±0.040 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

München Solar MSMD440M10-HJT108DS

440 W

HJT

43Marginal

Parameter	Original	Replacement	Deviation
Voc	40.08 V	40.83 V	1.9%
Vmpp	34.47 V	34.01 V	1.3%
Isc	12.84 A	13.4 A	4.4%
Impp	12.18 A	12.94 A	6.2%
TcVoc	-0.2 %/°C	-0.24 %/°C	±0.040 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Horay Solar HS440TC-MHO-D

440 W

TOPCon

28Marginal

Parameter	Original	Replacement	Deviation
Voc	40.08 V	39.7 V	0.9%
Vmpp	34.47 V	33.24 V	3.6%
Isc	12.84 A	14.3 A	11.4%
Impp	12.18 A	13.24 A	8.7%
TcVoc	-0.2 %/°C	-0.23 %/°C	±0.030 %/°C
TcPmax	-0.26 %/°C	-0.28 %/°C	±0.020 %/°C

Horay Solar HS440TC-MHA-D

440 W

TOPCon

24Marginal

Parameter	Original	Replacement	Deviation
Voc	40.08 V	39.57 V	1.3%
Vmpp	34.47 V	32.99 V	4.3%
Isc	12.84 A	13.8 A	7.5%
Impp	12.18 A	13.34 A	9.5%
TcVoc	-0.2 %/°C	-0.23 %/°C	±0.030 %/°C
TcPmax	-0.26 %/°C	-0.28 %/°C	±0.020 %/°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

40.08 V

Vmpp

34.47 V

Isc

12.84 A

Impp

12.18 A

TcVoc

-0.2 %/°C

TcPmax

-0.26 %/°C

Pmax

420 W

Cells

108

Bifaciality

70%

Length

1800 mm

Width

1134 mm

Thickness

30 mm

Weight

23.5 kg

The LONGi LGi7-54CHVD-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.

Other models in this series

Model	Power	Voc	Isc
LGi7-54CHVD-315M	315 W	39.59 V	9.75 A
LGi7-54CHVD-320M	320 W	39.95 V	9.82 A
LGi7-54CHVD-325M	325 W	40.31 V	9.88 A
LGi7-54CHVD-365M	365 W	39.66 V	11.28 A
LGi7-54CHVD-370M	370 W	40.02 V	11.33 A
LGi7-54CHVD-375M	375 W	40.38 V	11.38 A
LGi7-54CHVD-415M	415 W	39.72 V	12.8 A
LGi7-54CHVD-425M	425 W	40.44 V	12.88 A
LGi7-54CHVD-430M	430 W	39.74 V	13.26 A
LGi7-54CHVD-435M	435 W	40.1 V	13.29 A
LGi7-54CHVD-440M	440 W	40.46 V	13.33 A

Frequently Asked Questions

What specs must match when replacing the LONGi LGi7-54CHVD-420M?

The most critical specs to match are: cell count (must be exactly 108), Voc close to 40.08 V (within ±5%), and temperature coefficient TcVoc close to -0.2%/°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 LGi7-54CHVD-420M?

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 LGi7-54CHVD-420M.

All replacements

Find replacement for LONGi LGi7-54CHVD-420M

420 W HPBC solar panel with 108 cells. Voc 40.08 V · Isc 12.84 A · TcVoc -0.2%/°C.

Original Panel

Select the panel you want to replace

Same technology onlyShow only panels with matching cell technology

Compatible Replacements

16 panels found · 3694 panels excluded

LONGi LGi7-54CHVD-435M

435 W

HPBC

90Good match

Parameter	Original	Replacement	Deviation
Voc	40.08 V	40.1 V	0.0%
Vmpp	34.47 V	34.49 V	0.1%
Isc	12.84 A	13.29 A	3.5%
Impp	12.18 A	12.61 A	3.5%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LGi7-54CHVD-415M

415 W

HPBC

84Good match

Parameter	Original	Replacement	Deviation
Voc	40.08 V	39.72 V	0.9%
Vmpp	34.47 V	34.16 V	0.9%
Isc	12.84 A	12.8 A	0.3%
Impp	12.18 A	12.15 A	0.2%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LGi7-54CHVD-425M

425 W

HPBC

84Good match

Parameter	Original	Replacement	Deviation
Voc	40.08 V	40.44 V	0.9%
Vmpp	34.47 V	34.78 V	0.9%
Isc	12.84 A	12.88 A	0.3%
Impp	12.18 A	12.22 A	0.3%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LGi7-54CHVD-430M

430 W

HPBC

77Acceptable

Parameter	Original	Replacement	Deviation
Voc	40.08 V	39.74 V	0.8%
Vmpp	34.47 V	34.18 V	0.8%
Isc	12.84 A	13.26 A	3.3%
Impp	12.18 A	12.58 A	3.3%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LGi7-54CHVD-440M

440 W

HPBC

74Acceptable

Parameter	Original	Replacement	Deviation
Voc	40.08 V	40.46 V	0.9%
Vmpp	34.47 V	34.8 V	1.0%
Isc	12.84 A	13.33 A	3.8%
Impp	12.18 A	12.64 A	3.8%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Phono Solar PS435M8GFH-18/VSH

435 W

TOPCon

63Acceptable

Parameter	Original	Replacement	Deviation
Voc	40.08 V	40.06 V	0.0%
Vmpp	34.47 V	33.75 V	2.1%
Isc	12.84 A	13.35 A	4.0%
Impp	12.18 A	12.89 A	5.8%
TcVoc	-0.2 %/°C	-0.24 %/°C	±0.040 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Phono Solar PS440M8GFH-18/VSH

440 W

TOPCon

58Marginal

Parameter	Original	Replacement	Deviation
Voc	40.08 V	40.33 V	0.6%
Vmpp	34.47 V	34.01 V	1.3%
Isc	12.84 A	13.4 A	4.4%
Impp	12.18 A	12.94 A	6.2%
TcVoc	-0.2 %/°C	-0.24 %/°C	±0.040 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

München Solar MSMD430M10-HJT108DS

430 W

HJT

55Marginal

Parameter	Original	Replacement	Deviation
Voc	40.08 V	40.3 V	0.5%
Vmpp	34.47 V	33.49 V	2.8%
Isc	12.84 A	13.3 A	3.6%
Impp	12.18 A	12.84 A	5.4%
TcVoc	-0.2 %/°C	-0.24 %/°C	±0.040 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

München Solar MSMD435M10-HJT108DS

435 W

HJT

49Marginal

Parameter	Original	Replacement	Deviation
Voc	40.08 V	40.56 V	1.2%
Vmpp	34.47 V	33.75 V	2.1%
Isc	12.84 A	13.35 A	4.0%
Impp	12.18 A	12.89 A	5.8%
TcVoc	-0.2 %/°C	-0.24 %/°C	±0.040 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

München Solar MSMD440M10-HJT108DS

440 W

HJT

43Marginal

Parameter	Original	Replacement	Deviation
Voc	40.08 V	40.83 V	1.9%
Vmpp	34.47 V	34.01 V	1.3%
Isc	12.84 A	13.4 A	4.4%
Impp	12.18 A	12.94 A	6.2%
TcVoc	-0.2 %/°C	-0.24 %/°C	±0.040 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Horay Solar HS440TC-MHO-D

440 W

TOPCon

28Marginal

Parameter	Original	Replacement	Deviation
Voc	40.08 V	39.7 V	0.9%
Vmpp	34.47 V	33.24 V	3.6%
Isc	12.84 A	14.3 A	11.4%
Impp	12.18 A	13.24 A	8.7%
TcVoc	-0.2 %/°C	-0.23 %/°C	±0.030 %/°C
TcPmax	-0.26 %/°C	-0.28 %/°C	±0.020 %/°C

Horay Solar HS440TC-MHA-D

440 W

TOPCon

24Marginal

Parameter	Original	Replacement	Deviation
Voc	40.08 V	39.57 V	1.3%
Vmpp	34.47 V	32.99 V	4.3%
Isc	12.84 A	13.8 A	7.5%
Impp	12.18 A	13.34 A	9.5%
TcVoc	-0.2 %/°C	-0.23 %/°C	±0.030 %/°C
TcPmax	-0.26 %/°C	-0.28 %/°C	±0.020 %/°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

40.08 V

Vmpp

34.47 V

Isc

12.84 A

Impp

12.18 A

TcVoc

-0.2 %/°C

TcPmax

-0.26 %/°C

Pmax

420 W

Cells

108

Bifaciality

70%

Length

1800 mm

Width

1134 mm

Thickness

30 mm

Weight

23.5 kg

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

Model	Power	Voc	Isc
LGi7-54CHVD-315M	315 W	39.59 V	9.75 A
LGi7-54CHVD-320M	320 W	39.95 V	9.82 A
LGi7-54CHVD-325M	325 W	40.31 V	9.88 A
LGi7-54CHVD-365M	365 W	39.66 V	11.28 A
LGi7-54CHVD-370M	370 W	40.02 V	11.33 A
LGi7-54CHVD-375M	375 W	40.38 V	11.38 A
LGi7-54CHVD-415M	415 W	39.72 V	12.8 A
LGi7-54CHVD-425M	425 W	40.44 V	12.88 A
LGi7-54CHVD-430M	430 W	39.74 V	13.26 A
LGi7-54CHVD-435M	435 W	40.1 V	13.29 A
LGi7-54CHVD-440M	440 W	40.46 V	13.33 A