Find replacement for LONGi LR7-72HVDA-640M

640 W HPBC solar panel with 144 cells. Voc 54.02 V · Isc 14.98 A · TcVoc -0.2%/°C.

Original Panel

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Same technology onlyShow only panels with matching cell technology

Compatible Replacements

52 panels found · 3648 panels excluded

LONGi LR7-72HVD-640M

640 W

HPBC

100Exact match

Parameter	Original	Replacement	Deviation
Voc	54.02 V	54.02 V	0.0%
Vmpp	44.67 V	44.67 V	0.0%
Isc	14.98 A	14.98 A	0.0%
Impp	14.33 A	14.33 A	0.0%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LR7-72HVDF-640M

640 W

HPBC

100Exact match

Parameter	Original	Replacement	Deviation
Voc	54.02 V	54.02 V	0.0%
Vmpp	44.67 V	44.67 V	0.0%
Isc	14.98 A	14.98 A	0.0%
Impp	14.33 A	14.33 A	0.0%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

RECOM RCM-640-7DBRCF

640 W

IBC

100Exact match

Parameter	Original	Replacement	Deviation
Voc	54.02 V	54.02 V	0.0%
Vmpp	44.67 V	44.67 V	0.0%
Isc	14.98 A	14.98 A	0.0%
Impp	14.33 A	14.33 A	0.0%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LR7-72HYD-640M

640 W

HPBC

100Exact match

Parameter	Original	Replacement	Deviation
Voc	54.02 V	54.02 V	0.0%
Vmpp	44.67 V	44.67 V	0.0%
Isc	14.98 A	14.98 A	0.0%
Impp	14.33 A	14.33 A	0.0%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LR7-72HVD-635M

635 W

HPBC

95Exact match

Parameter	Original	Replacement	Deviation
Voc	54.02 V	53.92 V	0.2%
Vmpp	44.67 V	44.57 V	0.2%
Isc	14.98 A	14.89 A	0.6%
Impp	14.33 A	14.25 A	0.6%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LR7-72HYD-635M

635 W

HPBC

95Exact match

Parameter	Original	Replacement	Deviation
Voc	54.02 V	53.92 V	0.2%
Vmpp	44.67 V	44.57 V	0.2%
Isc	14.98 A	14.89 A	0.6%
Impp	14.33 A	14.25 A	0.6%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

RECOM RCM-645-7DBRCF

645 W

IBC

95Exact match

Parameter	Original	Replacement	Deviation
Voc	54.02 V	54.12 V	0.2%
Vmpp	44.67 V	44.77 V	0.2%
Isc	14.98 A	15.06 A	0.5%
Impp	14.33 A	14.41 A	0.6%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Bluesun Solar BSM645M10-72HJD

645 W

HPBC

95Exact match

Parameter	Original	Replacement	Deviation
Voc	54.02 V	54.12 V	0.2%
Vmpp	44.67 V	44.77 V	0.2%
Isc	14.98 A	15.06 A	0.5%
Impp	14.33 A	14.41 A	0.6%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LR7-72HVDA-645M

645 W

HPBC

95Exact match

Parameter	Original	Replacement	Deviation
Voc	54.02 V	54.12 V	0.2%
Vmpp	44.67 V	44.77 V	0.2%
Isc	14.98 A	15.06 A	0.5%
Impp	14.33 A	14.41 A	0.6%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LR7-72HYD-645M

645 W

HPBC

95Exact match

Parameter	Original	Replacement	Deviation
Voc	54.02 V	54.12 V	0.2%
Vmpp	44.67 V	44.77 V	0.2%
Isc	14.98 A	15.06 A	0.5%
Impp	14.33 A	14.41 A	0.6%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LR7-72HVD-645M

645 W

HPBC

95Exact match

Parameter	Original	Replacement	Deviation
Voc	54.02 V	54.12 V	0.2%
Vmpp	44.67 V	44.77 V	0.2%
Isc	14.98 A	15.06 A	0.5%
Impp	14.33 A	14.41 A	0.6%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LR7-72HVDF-645M

645 W

HPBC

95Exact match

Parameter	Original	Replacement	Deviation
Voc	54.02 V	54.12 V	0.2%
Vmpp	44.67 V	44.77 V	0.2%
Isc	14.98 A	15.06 A	0.5%
Impp	14.33 A	14.41 A	0.6%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

String Compatibility Calculator

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Panel Matcher

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Find an inverter that fits your panel array with the right MPPT range and DC/AC ratio.

How the Algorithm Works

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Original Panel Specs

Voc

54.02 V

Vmpp

44.67 V

Isc

14.98 A

Impp

14.33 A

TcVoc

-0.2 %/°C

TcPmax

-0.26 %/°C

Pmax

640 W

Cells

144

Bifaciality

70%

Length

2382 mm

Width

1134 mm

Thickness

30 mm

Weight

32.5 kg

The LONGi LR7-72HVDA-640M is a 640 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
645 W	54.12 V	15.06 A
650 W	54.22 V	15.14 A
655 W	54.32 V	15.22 A
660 W	54.42 V	15.3 A
665 W	54.52 V	15.38 A
670 W	54.62 V	15.46 A

Frequently Asked Questions

What specs must match when replacing the LONGi LR7-72HVDA-640M?

The most critical specs to match are: cell count (must be exactly 144), Voc close to 54.02 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 LR7-72HVDA-640M?

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 LR7-72HVDA-640M.