Find replacement for aleo solar S84T420

420 W TOPCon solar panel with 108 cells. Voc 39.19 V · Isc 13.19 A · TcVoc -0.24%/°C.

Original Panel

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Same technology onlyShow only panels with matching cell technology

Compatible Replacements

93 panels found · 3418 panels excluded

aleo solar L84S420

420 W

TOPCon

100Exact match

Parameter	Original	Replacement	Deviation
Voc	39.19 V	39.19 V	0.0%
Vmpp	33.52 V	33.52 V	0.0%
Isc	13.19 A	13.19 A	0.0%
Impp	12.53 A	12.53 A	0.0%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.31 %/°C	-0.31 %/°C	±0.000 %/°C

aleo solar L84S425

425 W

TOPCon

90Good match

Parameter	Original	Replacement	Deviation
Voc	39.19 V	39.38 V	0.5%
Vmpp	33.52 V	33.71 V	0.6%
Isc	13.19 A	13.27 A	0.6%
Impp	12.53 A	12.61 A	0.6%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.31 %/°C	-0.31 %/°C	±0.000 %/°C

aleo solar S84T425

425 W

TOPCon

90Good match

Parameter	Original	Replacement	Deviation
Voc	39.19 V	39.38 V	0.5%
Vmpp	33.52 V	33.71 V	0.6%
Isc	13.19 A	13.27 A	0.6%
Impp	12.53 A	12.61 A	0.6%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.31 %/°C	-0.31 %/°C	±0.000 %/°C

aleo solar L64S430

430 W

TOPCon

86Good match

Parameter	Original	Replacement	Deviation
Voc	39.19 V	39.22 V	0.1%
Vmpp	33.52 V	33.2 V	1.0%
Isc	13.19 A	13.63 A	3.3%
Impp	12.53 A	12.95 A	3.4%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.31 %/°C	-0.31 %/°C	±0.000 %/°C

aleo solar L64S435

435 W

TOPCon

81Good match

Parameter	Original	Replacement	Deviation
Voc	39.19 V	39.41 V	0.6%
Vmpp	33.52 V	33.38 V	0.4%
Isc	13.19 A	13.71 A	3.9%
Impp	12.53 A	13.03 A	4.0%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.31 %/°C	-0.31 %/°C	±0.000 %/°C

aleo solar L84S430

430 W

TOPCon

80Good match

Parameter	Original	Replacement	Deviation
Voc	39.19 V	39.57 V	1.0%
Vmpp	33.52 V	33.89 V	1.1%
Isc	13.19 A	13.35 A	1.2%
Impp	12.53 A	12.69 A	1.3%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.31 %/°C	-0.31 %/°C	±0.000 %/°C

aleo solar S84T430

430 W

TOPCon

80Good match

Parameter	Original	Replacement	Deviation
Voc	39.19 V	39.57 V	1.0%
Vmpp	33.52 V	33.89 V	1.1%
Isc	13.19 A	13.35 A	1.2%
Impp	12.53 A	12.69 A	1.3%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.31 %/°C	-0.31 %/°C	±0.000 %/°C

aleo solar L64S440

440 W

TOPCon

75Acceptable

Parameter	Original	Replacement	Deviation
Voc	39.19 V	39.6 V	1.0%
Vmpp	33.52 V	33.56 V	0.1%
Isc	13.19 A	13.79 A	4.5%
Impp	12.53 A	13.11 A	4.6%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.31 %/°C	-0.31 %/°C	±0.000 %/°C

Qcells Q.TRON BLK M-G2+ 430

430 W

TOPCon

73Acceptable

Parameter	Original	Replacement	Deviation
Voc	39.19 V	39.32 V	0.3%
Vmpp	33.52 V	32.94 V	1.7%
Isc	13.19 A	13.74 A	4.2%
Impp	12.53 A	13.05 A	4.2%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.31 %/°C	-0.29 %/°C	±0.020 %/°C

Qcells Q.TRON BLK M-G2+ 425

425 W

TOPCon

71Acceptable

Parameter	Original	Replacement	Deviation
Voc	39.19 V	39.03 V	0.4%
Vmpp	33.52 V	32.74 V	2.3%
Isc	13.19 A	13.66 A	3.6%
Impp	12.53 A	12.98 A	3.6%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.31 %/°C	-0.29 %/°C	±0.020 %/°C

LONGi LR5-54HTDB-425M

425 W

HPBC

71Acceptable

Parameter	Original	Replacement	Deviation
Voc	39.19 V	39.45 V	0.7%
Vmpp	33.52 V	33.27 V	0.7%
Isc	13.19 A	13.61 A	3.2%
Impp	12.53 A	12.78 A	2.0%
TcVoc	-0.24 %/°C	-0.23 %/°C	±0.010 %/°C
TcPmax	-0.31 %/°C	-0.29 %/°C	±0.020 %/°C

LONGi LR5-54HTDB-420M

420 W

HPBC

70Acceptable

Parameter	Original	Replacement	Deviation
Voc	39.19 V	39.45 V	0.7%
Vmpp	33.52 V	33.07 V	1.3%
Isc	13.19 A	13.54 A	2.7%
Impp	12.53 A	12.71 A	1.4%
TcVoc	-0.24 %/°C	-0.23 %/°C	±0.010 %/°C
TcPmax	-0.31 %/°C	-0.29 %/°C	±0.020 %/°C

String Compatibility Calculator

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Panel Matcher

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How the Algorithm Works

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Original Panel Specs

Voc

39.19 V

Vmpp

33.52 V

Isc

13.19 A

Impp

12.53 A

TcVoc

-0.24 %/°C

TcPmax

-0.31 %/°C

Pmax

420 W

Cells

108

Length

1795 mm

Width

1169 mm

Thickness

17 mm

Weight

22 kg

The aleo solar S84T420 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
	425 W	39.38 V	13.27 A
	430 W	39.57 V	13.35 A

Frequently Asked Questions

What specs must match when replacing the aleo solar S84T420?

The most critical specs to match are: cell count (must be exactly 108), Voc close to 39.19 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 aleo solar S84T420?

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 aleo solar S84T420.