420 W HPBC solar panel with 144 cells. Voc 52.79 V · Isc 9.75 A · TcVoc -0.2%/°C.
Select the panel you want to replace
6 panels found · 3694 panels excluded
425 W
HPBC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 52.79 V | 52.99 V | 0.4% |
| Vmpp | 45.71 V | 46.1 V | 0.9% |
| Isc | 9.75 A | 9.8 A | 0.5% |
| Impp | 9.19 A | 9.23 A | 0.4% |
| TcVoc | -0.2 %/°C | -0.2 %/°C | ±0.000 %/°C |
| TcPmax | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
430 W
HPBC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 52.79 V | 53.19 V | 0.8% |
| Vmpp | 45.71 V | 46.59 V | 1.9% |
| Isc | 9.75 A | 9.85 A | 1.0% |
| Impp | 9.19 A | 9.28 A | 1.0% |
| TcVoc | -0.2 %/°C | -0.2 %/°C | ±0.000 %/°C |
| TcPmax | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
440 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 52.79 V | 52.2 V | 1.1% |
| Vmpp | 45.71 V | 44 V | 3.7% |
| Isc | 9.75 A | 10.67 A | 9.4% |
| Impp | 9.19 A | 10.01 A | 8.9% |
| TcVoc | -0.2 %/°C | -0.24 %/°C | ±0.040 %/°C |
| TcPmax | -0.26 %/°C | -0.29 %/°C | ±0.030 %/°C |
440 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 52.79 V | 52.2 V | 1.1% |
| Vmpp | 45.71 V | 44 V | 3.7% |
| Isc | 9.75 A | 10.67 A | 9.4% |
| Impp | 9.19 A | 10.01 A | 8.9% |
| TcVoc | -0.2 %/°C | -0.24 %/°C | ±0.040 %/°C |
| TcPmax | -0.26 %/°C | -0.29 %/°C | ±0.030 %/°C |
435 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 52.79 V | 51.8 V | 1.9% |
| Vmpp | 45.71 V | 43.6 V | 4.6% |
| Isc | 9.75 A | 10.64 A | 9.1% |
| Impp | 9.19 A | 9.99 A | 8.7% |
| TcVoc | -0.2 %/°C | -0.24 %/°C | ±0.040 %/°C |
| TcPmax | -0.26 %/°C | -0.29 %/°C | ±0.030 %/°C |
430 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 52.79 V | 51.4 V | 2.6% |
| Vmpp | 45.71 V | 43.2 V | 5.5% |
| Isc | 9.75 A | 10.59 A | 8.6% |
| Impp | 9.19 A | 9.96 A | 8.4% |
| TcVoc | -0.2 %/°C | -0.24 %/°C | ±0.040 %/°C |
| TcPmax | -0.26 %/°C | -0.29 %/°C | ±0.030 %/°C |
String Compatibility Calculator
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Panel Matcher
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Voc
52.79 V
Vmpp
45.71 V
Isc
9.75 A
Impp
9.19 A
TcVoc
-0.2 %/°C
TcPmax
-0.26 %/°C
Pmax
420 W
Cells
144
Length
2382 mm
Width
1134 mm
Thickness
30 mm
Weight
33.5 kg
The LONGi LGi7-72CHVD-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.
| Model | Power | Voc | Isc |
|---|---|---|---|
| 425 W | 52.99 V | 9.8 A | |
| 430 W | 53.19 V | 9.85 A | |
| 480 W | 52.68 V | 11.23 A | |
| 485 W | 52.88 V | 11.28 A | |
| 490 W | 53.08 V | 11.33 A | |
| 490 W | 53.11 V | 11.38 A | |
| 495 W | 53.31 V | 11.43 A | |
| 500 W | 53.51 V | 11.48 A | |
| 550 W | 52.96 V | 12.8 A | |
The most critical specs to match are: cell count (must be exactly 144), Voc close to 52.79 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.
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.
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 LGi7-72CHVD-420M.
| LGi7-72CHVD-555M |
| 555 W |
| 53.16 V |
| 12.85 A |
| LGi7-72CHVD-560M | 560 W | 53.36 V | 12.9 A |
| LGi7-72CHVD-570M | 570 W | 52.99 V | 13.26 A |
| LGi7-72CHVD-575M | 575 W | 53.19 V | 13.31 A |
| LGi7-72CHVD-580M | 580 W | 53.39 V | 13.39 A |