Find replacement for RECOM RCM-640-8DBRCM

640 W IBC solar panel with 132 cells. Voc 49.34 V · Isc 16.54 A · TcVoc -0.2%/°C.

Original Panel

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Same technology onlyShow only panels with matching cell technology

Compatible Replacements

90 panels found · 3610 panels excluded

RECOM RCM-635-8DBRCM

635 W

IBC

95Exact match

Parameter	Original	Replacement	Deviation
Voc	49.34 V	49.24 V	0.2%
Vmpp	40.63 V	40.53 V	0.2%
Isc	16.54 A	16.45 A	0.5%
Impp	15.76 A	15.67 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-645-8DBRCM

645 W

IBC

95Exact match

Parameter	Original	Replacement	Deviation
Voc	49.34 V	49.44 V	0.2%
Vmpp	40.63 V	40.73 V	0.2%
Isc	16.54 A	16.62 A	0.5%
Impp	15.76 A	15.84 A	0.5%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LR8-66HYD-630M

630 W

HPBC

94Good match

Parameter	Original	Replacement	Deviation
Voc	49.34 V	49.32 V	0.0%
Vmpp	40.63 V	40.58 V	0.1%
Isc	16.54 A	16.22 A	1.9%
Impp	15.76 A	15.53 A	1.5%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LR8-66HYD-635M

635 W

HPBC

94Good match

Parameter	Original	Replacement	Deviation
Voc	49.34 V	49.42 V	0.2%
Vmpp	40.63 V	40.68 V	0.1%
Isc	16.54 A	16.3 A	1.5%
Impp	15.76 A	15.61 A	1.0%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LR8-66HVD-640M

640 W

HPBC

92Good match

Parameter	Original	Replacement	Deviation
Voc	49.34 V	49.52 V	0.4%
Vmpp	40.63 V	40.78 V	0.4%
Isc	16.54 A	16.38 A	1.0%
Impp	15.76 A	15.69 A	0.4%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LR8-66HVDF-640M

640 W

HPBC

92Good match

Parameter	Original	Replacement	Deviation
Voc	49.34 V	49.52 V	0.4%
Vmpp	40.63 V	40.78 V	0.4%
Isc	16.54 A	16.38 A	1.0%
Impp	15.76 A	15.69 A	0.4%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LR8-66HYD-640M

640 W

HPBC

92Good match

Parameter	Original	Replacement	Deviation
Voc	49.34 V	49.52 V	0.4%
Vmpp	40.63 V	40.78 V	0.4%
Isc	16.54 A	16.38 A	1.0%
Impp	15.76 A	15.69 A	0.4%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

RECOM RCM-650-8DBRCM

650 W

IBC

90Good match

Parameter	Original	Replacement	Deviation
Voc	49.34 V	49.54 V	0.4%
Vmpp	40.63 V	40.83 V	0.5%
Isc	16.54 A	16.7 A	1.0%
Impp	15.76 A	15.92 A	1.0%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Luxor Solar LX-645M/182R-132+ GG SW PRIME

645 W

TOPCon

89Good match

Parameter	Original	Replacement	Deviation
Voc	49.34 V	49.52 V	0.4%
Vmpp	40.63 V	40.9 V	0.7%
Isc	16.54 A	16.44 A	0.6%
Impp	15.76 A	15.78 A	0.1%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.27 %/°C	±0.010 %/°C

LONGi LR8-66HVDF-645M

645 W

HPBC

89Good match

Parameter	Original	Replacement	Deviation
Voc	49.34 V	49.62 V	0.6%
Vmpp	40.63 V	40.88 V	0.6%
Isc	16.54 A	16.46 A	0.5%
Impp	15.76 A	15.78 A	0.1%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LR8-66HVD-645M

645 W

HPBC

89Good match

Parameter	Original	Replacement	Deviation
Voc	49.34 V	49.62 V	0.6%
Vmpp	40.63 V	40.88 V	0.6%
Isc	16.54 A	16.46 A	0.5%
Impp	15.76 A	15.78 A	0.1%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

LONGi LR8-66HYD-645M

645 W

HPBC

89Good match

Parameter	Original	Replacement	Deviation
Voc	49.34 V	49.62 V	0.6%
Vmpp	40.63 V	40.88 V	0.6%
Isc	16.54 A	16.46 A	0.5%
Impp	15.76 A	15.78 A	0.1%
TcVoc	-0.2 %/°C	-0.2 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

String Compatibility Calculator

Verify the replacement panel works with your inverter

Panel Matcher

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How the Algorithm Works

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Original Panel Specs

Voc

49.34 V

Vmpp

40.63 V

Isc

16.54 A

Impp

15.76 A

TcVoc

-0.2 %/°C

TcPmax

-0.26 %/°C

Pmax

640 W

Cells

132

Bifaciality

75%

Length

2382 mm

Width

1134 mm

Thickness

30 mm

Weight

33.5 kg

The RECOM RCM-640-8DBRCM 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
635 W	49.24 V	16.45 A
645 W	49.44 V	16.62 A
650 W	49.54 V	16.7 A
655 W	49.64 V	16.78 A
660 W	49.74 V	16.86 A
665 W	49.84 V	16.95 A
670 W	49.94 V	17.03 A

Frequently Asked Questions

What specs must match when replacing the RECOM RCM-640-8DBRCM?

The most critical specs to match are: cell count (must be exactly 132), Voc close to 49.34 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 RECOM RCM-640-8DBRCM?

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 RECOM RCM-640-8DBRCM.