Find replacement for DMEGC DM665G12RT-B66HSW

665 W TOPCon solar panel with 132 cells. Voc 50.12 V · Isc 16.77 A · TcVoc -0.25%/°C.

Original Panel

Select the panel you want to replace

Same technology onlyShow only panels with matching cell technology

Compatible Replacements

54 panels found · 4285 panels excluded

DMEGC DM660G12RT-B66HSW

660 W

TOPCon

94Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	49.99 V	0.3%
Vmpp	41.98 V	41.84 V	0.3%
Isc	16.77 A	16.7 A	0.4%
Impp	15.86 A	15.79 A	0.4%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Suntech STP645S-H66-Nsh+

645 W

TOPCon

90Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.1 V	0.0%
Vmpp	41.98 V	41.64 V	0.8%
Isc	16.77 A	16.37 A	2.4%
Impp	15.86 A	15.49 A	2.3%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

JinkoSolar JKM645N-66HL4M-BDX

645 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.08 V	0.1%
Vmpp	41.98 V	41.44 V	1.3%
Isc	16.77 A	16.38 A	2.3%
Impp	15.86 A	15.57 A	1.8%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

JinkoSolar JKM645N-66HL4M-BDV-Z4

645 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.08 V	0.1%
Vmpp	41.98 V	41.44 V	1.3%
Isc	16.77 A	16.38 A	2.3%
Impp	15.86 A	15.57 A	1.8%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Suntech STP650S-H66-Nsh+

650 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.3 V	0.4%
Vmpp	41.98 V	41.8 V	0.4%
Isc	16.77 A	16.43 A	2.0%
Impp	15.86 A	15.55 A	2.0%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

JinkoSolar JKM645N-66HL4M-BDV

645 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.08 V	0.1%
Vmpp	41.98 V	41.44 V	1.3%
Isc	16.77 A	16.38 A	2.3%
Impp	15.86 A	15.57 A	1.8%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DMEGC DM655G12RT-B66HSW

655 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	49.86 V	0.5%
Vmpp	41.98 V	41.7 V	0.7%
Isc	16.77 A	16.63 A	0.8%
Impp	15.86 A	15.72 A	0.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Astronergy CHSM66RNDGF-BH650

650 W

TOPCon

87Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	49.87 V	0.5%
Vmpp	41.98 V	42.24 V	0.6%
Isc	16.77 A	16.58 A	1.1%
Impp	15.86 A	15.39 A	3.0%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

JinkoSolar JKM650N-66HL4M-BDV-Z4

650 W

TOPCon

87Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.28 V	0.3%
Vmpp	41.98 V	41.58 V	1.0%
Isc	16.77 A	16.44 A	2.0%
Impp	15.86 A	15.64 A	1.4%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

JinkoSolar JKM650N-66HL4M-BDV

650 W

TOPCon

87Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.28 V	0.3%
Vmpp	41.98 V	41.57 V	1.0%
Isc	16.77 A	16.44 A	2.0%
Impp	15.86 A	15.64 A	1.4%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

JinkoSolar JKM650N-66HL4M-BDX

650 W

TOPCon

87Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.28 V	0.3%
Vmpp	41.98 V	41.57 V	1.0%
Isc	16.77 A	16.44 A	2.0%
Impp	15.86 A	15.64 A	1.4%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Tongwei TWMNH-66HD655

655 W

TOPCon

86Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.15 V	0.1%
Vmpp	41.98 V	41.78 V	0.5%
Isc	16.77 A	16.52 A	1.5%
Impp	15.86 A	15.68 A	1.1%
TcVoc	-0.25 %/°C	-0.24 %/°C	±0.010 %/°C
TcPmax	-0.29 %/°C	-0.28 %/°C	±0.010 %/°C

String Compatibility Calculator

Verify the replacement panel works with your inverter

Panel Matcher

Find all compatible panels for a specific inverter

Already have panels?

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

How the Algorithm Works

Learn how panels are scored and matched

Original Panel Specs

Voc

50.12 V

Vmpp

41.98 V

Isc

16.77 A

Impp

15.86 A

TcVoc

-0.25 %/°C

TcPmax

-0.29 %/°C

Pmax

665 W

Cells

132

Bifaciality

80%

Length

2382 mm

Width

1134 mm

Thickness

30 mm

Weight

32 kg

The DMEGC DM665G12RT-B66HSW is a 665 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
DM640G12RT-B66HSW	640 W	49.47 V	16.42 A
DM645G12RT-B66HSW	645 W	49.6 V	16.49 A
DM650G12RT-B66HSW	650 W	49.73 V	16.56 A
DM655G12RT-B66HSW	655 W	49.86 V	16.63 A
DM660G12RT-B66HSW	660 W	49.99 V	16.7 A

Frequently Asked Questions

What specs must match when replacing the DMEGC DM665G12RT-B66HSW?

The most critical specs to match are: cell count (must be exactly 132), Voc close to 50.12 V (within ±5%), and temperature coefficient TcVoc close to -0.25%/°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 DMEGC DM665G12RT-B66HSW?

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 DMEGC DM665G12RT-B66HSW.

All replacements

Find replacement for DMEGC DM665G12RT-B66HSW

665 W TOPCon solar panel with 132 cells. Voc 50.12 V · Isc 16.77 A · TcVoc -0.25%/°C.

Original Panel

Select the panel you want to replace

Same technology onlyShow only panels with matching cell technology

Compatible Replacements

54 panels found · 4285 panels excluded

DMEGC DM660G12RT-B66HSW

660 W

TOPCon

94Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	49.99 V	0.3%
Vmpp	41.98 V	41.84 V	0.3%
Isc	16.77 A	16.7 A	0.4%
Impp	15.86 A	15.79 A	0.4%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Suntech STP645S-H66-Nsh+

645 W

TOPCon

90Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.1 V	0.0%
Vmpp	41.98 V	41.64 V	0.8%
Isc	16.77 A	16.37 A	2.4%
Impp	15.86 A	15.49 A	2.3%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

JinkoSolar JKM645N-66HL4M-BDX

645 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.08 V	0.1%
Vmpp	41.98 V	41.44 V	1.3%
Isc	16.77 A	16.38 A	2.3%
Impp	15.86 A	15.57 A	1.8%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

JinkoSolar JKM645N-66HL4M-BDV-Z4

645 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.08 V	0.1%
Vmpp	41.98 V	41.44 V	1.3%
Isc	16.77 A	16.38 A	2.3%
Impp	15.86 A	15.57 A	1.8%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Suntech STP650S-H66-Nsh+

650 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.3 V	0.4%
Vmpp	41.98 V	41.8 V	0.4%
Isc	16.77 A	16.43 A	2.0%
Impp	15.86 A	15.55 A	2.0%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

JinkoSolar JKM645N-66HL4M-BDV

645 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.08 V	0.1%
Vmpp	41.98 V	41.44 V	1.3%
Isc	16.77 A	16.38 A	2.3%
Impp	15.86 A	15.57 A	1.8%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DMEGC DM655G12RT-B66HSW

655 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	49.86 V	0.5%
Vmpp	41.98 V	41.7 V	0.7%
Isc	16.77 A	16.63 A	0.8%
Impp	15.86 A	15.72 A	0.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Astronergy CHSM66RNDGF-BH650

650 W

TOPCon

87Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	49.87 V	0.5%
Vmpp	41.98 V	42.24 V	0.6%
Isc	16.77 A	16.58 A	1.1%
Impp	15.86 A	15.39 A	3.0%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

JinkoSolar JKM650N-66HL4M-BDV-Z4

650 W

TOPCon

87Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.28 V	0.3%
Vmpp	41.98 V	41.58 V	1.0%
Isc	16.77 A	16.44 A	2.0%
Impp	15.86 A	15.64 A	1.4%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

JinkoSolar JKM650N-66HL4M-BDV

650 W

TOPCon

87Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.28 V	0.3%
Vmpp	41.98 V	41.57 V	1.0%
Isc	16.77 A	16.44 A	2.0%
Impp	15.86 A	15.64 A	1.4%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

JinkoSolar JKM650N-66HL4M-BDX

650 W

TOPCon

87Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.28 V	0.3%
Vmpp	41.98 V	41.57 V	1.0%
Isc	16.77 A	16.44 A	2.0%
Impp	15.86 A	15.64 A	1.4%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Tongwei TWMNH-66HD655

655 W

TOPCon

86Good match

Parameter	Original	Replacement	Deviation
Voc	50.12 V	50.15 V	0.1%
Vmpp	41.98 V	41.78 V	0.5%
Isc	16.77 A	16.52 A	1.5%
Impp	15.86 A	15.68 A	1.1%
TcVoc	-0.25 %/°C	-0.24 %/°C	±0.010 %/°C
TcPmax	-0.29 %/°C	-0.28 %/°C	±0.010 %/°C

String Compatibility Calculator

Verify the replacement panel works with your inverter

Panel Matcher

Find all compatible panels for a specific inverter

Already have panels?

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

How the Algorithm Works

Learn how panels are scored and matched

Original Panel Specs

Voc

50.12 V

Vmpp

41.98 V

Isc

16.77 A

Impp

15.86 A

TcVoc

-0.25 %/°C

TcPmax

-0.29 %/°C

Pmax

665 W

Cells

132

Bifaciality

80%

Length

2382 mm

Width

1134 mm

Thickness

30 mm

Weight

32 kg

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
DM640G12RT-B66HSW	640 W	49.47 V	16.42 A
DM645G12RT-B66HSW	645 W	49.6 V	16.49 A
DM650G12RT-B66HSW	650 W	49.73 V	16.56 A
DM655G12RT-B66HSW	655 W	49.86 V	16.63 A
DM660G12RT-B66HSW	660 W	49.99 V	16.7 A