Find replacement for Hanersun HN18N-54H420W

420 W TOPCon solar panel with 108 cells. Voc 37.9 V · Isc 13.98 A · TcVoc -0.23%/°C.

Original Panel

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Same technology onlyShow only panels with matching cell technology

Compatible Replacements

72 panels found · 3628 panels excluded

Hanersun HN18N-54H425W

425 W

TOPCon

89Good match

Parameter	Original	Replacement	Deviation
Voc	37.9 V	38.1 V	0.5%
Vmpp	31.9 V	32.1 V	0.6%
Isc	13.98 A	14.05 A	0.5%
Impp	13.17 A	13.24 A	0.5%
TcVoc	-0.23 %/°C	-0.23 %/°C	±0.000 %/°C
TcPmax	-0.28 %/°C	-0.28 %/°C	±0.000 %/°C

Jolywood JW-HT108N-420

420 W

TOPCon

85Good match

Parameter	Original	Replacement	Deviation
Voc	37.9 V	37.9 V	0.0%
Vmpp	31.9 V	31.9 V	0.0%
Isc	13.98 A	13.98 A	0.0%
Impp	13.17 A	13.17 A	0.0%
TcVoc	-0.23 %/°C	-0.25 %/°C	±0.020 %/°C
TcPmax	-0.28 %/°C	-0.3 %/°C	±0.020 %/°C

Hanersun HN18N-54H430W

430 W

TOPCon

79Acceptable

Parameter	Original	Replacement	Deviation
Voc	37.9 V	38.3 V	1.1%
Vmpp	31.9 V	32.3 V	1.3%
Isc	13.98 A	14.12 A	1.0%
Impp	13.17 A	13.32 A	1.1%
TcVoc	-0.23 %/°C	-0.23 %/°C	±0.000 %/°C
TcPmax	-0.28 %/°C	-0.28 %/°C	±0.000 %/°C

TommaTech TT420-108TNFB10 Dark Series

420 W

TOPCon

79Acceptable

Parameter	Original	Replacement	Deviation
Voc	37.9 V	37.91 V	0.0%
Vmpp	31.9 V	31.94 V	0.1%
Isc	13.98 A	13.95 A	0.2%
Impp	13.17 A	13.15 A	0.2%
TcVoc	-0.23 %/°C	-0.26 %/°C	±0.030 %/°C
TcPmax	-0.28 %/°C	-0.3 %/°C	±0.020 %/°C

Jolywood JW-HT108N-415

415 W

TOPCon

75Acceptable

Parameter	Original	Replacement	Deviation
Voc	37.9 V	37.7 V	0.5%
Vmpp	31.9 V	31.7 V	0.6%
Isc	13.98 A	13.91 A	0.5%
Impp	13.17 A	13.1 A	0.5%
TcVoc	-0.23 %/°C	-0.25 %/°C	±0.020 %/°C
TcPmax	-0.28 %/°C	-0.3 %/°C	±0.020 %/°C

Jolywood JW-HT108N-425

425 W

TOPCon

75Acceptable

Parameter	Original	Replacement	Deviation
Voc	37.9 V	38.1 V	0.5%
Vmpp	31.9 V	32.1 V	0.6%
Isc	13.98 A	14.05 A	0.5%
Impp	13.17 A	13.24 A	0.5%
TcVoc	-0.23 %/°C	-0.25 %/°C	±0.020 %/°C
TcPmax	-0.28 %/°C	-0.3 %/°C	±0.020 %/°C

RECOM RCM-440-7NG

440 W

TOPCon

74Acceptable

Parameter	Original	Replacement	Deviation
Voc	37.9 V	38.3 V	1.1%
Vmpp	31.9 V	31.8 V	0.3%
Isc	13.98 A	14.59 A	4.4%
Impp	13.17 A	13.84 A	5.1%
TcVoc	-0.23 %/°C	-0.23 %/°C	±0.000 %/°C
TcPmax	-0.28 %/°C	-0.28 %/°C	±0.000 %/°C

TommaTech TT420-108TN10

420 W

TOPCon

72Acceptable

Parameter	Original	Replacement	Deviation
Voc	37.9 V	38.11 V	0.6%
Vmpp	31.9 V	31.94 V	0.1%
Isc	13.98 A	13.95 A	0.2%
Impp	13.17 A	13.15 A	0.2%
TcVoc	-0.23 %/°C	-0.26 %/°C	±0.030 %/°C
TcPmax	-0.28 %/°C	-0.3 %/°C	±0.020 %/°C

TommaTech TT420-108TNB10

420 W

TOPCon

72Acceptable

Parameter	Original	Replacement	Deviation
Voc	37.9 V	38.11 V	0.6%
Vmpp	31.9 V	31.94 V	0.1%
Isc	13.98 A	13.95 A	0.2%
Impp	13.17 A	13.15 A	0.2%
TcVoc	-0.23 %/°C	-0.26 %/°C	±0.030 %/°C
TcPmax	-0.28 %/°C	-0.3 %/°C	±0.020 %/°C

TommaTech TT420-108TNB10 G2G

420 W

TOPCon

72Acceptable

Parameter	Original	Replacement	Deviation
Voc	37.9 V	38.11 V	0.6%
Vmpp	31.9 V	31.94 V	0.1%
Isc	13.98 A	13.95 A	0.2%
Impp	13.17 A	13.15 A	0.2%
TcVoc	-0.23 %/°C	-0.26 %/°C	±0.030 %/°C
TcPmax	-0.28 %/°C	-0.3 %/°C	±0.020 %/°C

LogicPower LP-420M

420 W

TOPCon

71Acceptable

Parameter	Original	Replacement	Deviation
Voc	37.9 V	38.11 V	0.6%
Vmpp	31.9 V	31.51 V	1.2%
Isc	13.98 A	14.07 A	0.6%
Impp	13.17 A	13.33 A	1.2%
TcVoc	-0.23 %/°C	-0.25 %/°C	±0.020 %/°C
TcPmax	-0.28 %/°C	-0.3 %/°C	±0.020 %/°C

LONGi LR5-54HPH-425M

425 W

PERC

70Acceptable

Parameter	Original	Replacement	Deviation
Voc	37.9 V	37.9 V	0.0%
Vmpp	31.9 V	31.94 V	0.1%
Isc	13.98 A	14.08 A	0.7%
Impp	13.17 A	13.31 A	1.1%
TcVoc	-0.23 %/°C	-0.265 %/°C	±0.035 %/°C
TcPmax	-0.28 %/°C	-0.34 %/°C	±0.060 %/°C

String Compatibility Calculator

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Panel Matcher

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Original Panel Specs

Voc

37.9 V

Vmpp

31.9 V

Isc

13.98 A

Impp

13.17 A

TcVoc

-0.23 %/°C

TcPmax

-0.28 %/°C

Pmax

420 W

Cells

108

Length

1722 mm

Width

1134 mm

Thickness

30 mm

Weight

20.2 kg

The Hanersun HN18N-54H420W 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

Power	Voc	Isc
425 W	38.1 V	14.05 A
430 W	38.3 V	14.12 A
435 W	38.5 V	14.19 A
440 W	38.7 V	14.26 A
445 W	38.9 V	14.33 A

Frequently Asked Questions

What specs must match when replacing the Hanersun HN18N-54H420W?

The most critical specs to match are: cell count (must be exactly 108), Voc close to 37.9 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.

Can I use a higher wattage replacement for the Hanersun HN18N-54H420W?

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 Hanersun HN18N-54H420W.