425 W TOPCon solar panel with 108 cells. Voc 38.1 V · Isc 14.05 A · TcVoc -0.23%/°C.
Select the panel you want to replace
Panel not in the catalogue?
123 of the 4,444 panels in the catalogue can replace Hanersun HN18N-54H425W. Before you buy, check your pick in the string calculator with your inverter.
CloseNoticeableLarge differenceTap or click a difference to see what it means for your string.
Small differences within tolerance — safe once verified in the calculator with your inverter.
Match 82–89 % · 6 models
Noticeable differences — the string voltage and current need a careful check.
Match 60–79 % · 48 models
Large differences — a real risk of a mismatched string; prefer a closer panel.
Match 27–59 % · 69 models
String Compatibility Calculator
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Panel Matcher
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How the Algorithm Works
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Voc
38.1 V
Vmpp
32.1 V
Isc
14.05 A
Impp
13.24 A
TcVoc
-0.23 %/°C
TcPmax
-0.28 %/°C
Pmax
425 W
Cells
108
Length
1722 mm
Width
1134 mm
Thickness
30 mm
Weight
20.2 kg
The Hanersun HN18N-54H425W is a 425 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 |
|---|---|---|---|
| HN18N-54H420W | 420 W | 37.9 V | 13.98 A |
| HN18N-54H430W | 430 W | 38.3 V | 14.12 A |
| HN18N-54H435W | 435 W | 38.5 V | 14.19 A |
| HN18N-54H440W | 440 W | 38.7 V | 14.26 A |
| HN18N-54H445W | 445 W | 38.9 V | 14.33 A |
The most critical specs to match are: cell count (must be exactly 108), Voc close to 38.1 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.
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 Hanersun HN18N-54H425W.