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All replacements

Find replacement for S-Energy SL85-66BDL-665R

665 W PERC solar panel with 132 cells. Voc 46.54 V · Isc 18.42 A · TcVoc -0.25%/°C.

Select the panel you want to replace

Show only panels with matching cell technology

Compatible Replacements

37 panels found · 4302 panels excluded

S-Energy SL85-66BDL-660R

660 W

PERC
92Good match
ParameterOriginalReplacementDeviation
Voc46.54 V46.36 V0.4%
Vmpp37.98 V37.8 V0.5%
Isc18.42 A18.37 A0.3%
Impp17.51 A17.46 A0.3%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Seraphim SRP-670-BMC-BG

670 W

PERC
84Good match
ParameterOriginalReplacementDeviation
Voc46.54 V46.28 V0.6%
Vmpp37.98 V38.56 V1.5%
Isc18.42 A18.54 A0.7%
Impp17.51 A17.37 A0.8%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
S-Energy SL85-66BDL-655R

655 W

PERC
84Good match
ParameterOriginalReplacementDeviation
Voc46.54 V46.16 V0.8%
Vmpp37.98 V37.62 V0.9%
Isc18.42 A18.32 A0.5%
Impp17.51 A17.41 A0.6%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Seraphim SRP-670-BMC-HV

670 W

PERC
84Good match
ParameterOriginalReplacementDeviation
Voc46.54 V46.28 V0.6%
Vmpp37.98 V38.56 V1.5%
Isc18.42 A18.54 A0.7%
Impp17.51 A17.37 A0.8%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Yingli Solar YL670DF66 f/2

670 W

PERC
83Good match
ParameterOriginalReplacementDeviation
Voc46.54 V46.1 V0.9%
Vmpp37.98 V38.3 V0.8%
Isc18.42 A18.58 A0.9%
Impp17.51 A17.5 A0.1%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Seraphim SRP-665-BMC-BG

665 W

PERC
82Good match
ParameterOriginalReplacementDeviation
Voc46.54 V46.08 V1.0%
Vmpp37.98 V38.36 V1.0%
Isc18.42 A18.49 A0.4%
Impp17.51 A17.33 A1.0%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Seraphim SRP-665-BMC-HV

665 W

PERC
82Good match
ParameterOriginalReplacementDeviation
Voc46.54 V46.08 V1.0%
Vmpp37.98 V38.36 V1.0%
Isc18.42 A18.49 A0.4%
Impp17.51 A17.33 A1.0%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Yingli Solar YL665DF66 f/2

665 W

PERC
80Good match
ParameterOriginalReplacementDeviation
Voc46.54 V45.9 V1.4%
Vmpp37.98 V38.1 V0.3%
Isc18.42 A18.54 A0.7%
Impp17.51 A17.46 A0.3%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Seraphim SRP-660-BMC-BG

660 W

PERC
79Acceptable
ParameterOriginalReplacementDeviation
Voc46.54 V45.88 V1.4%
Vmpp37.98 V38.16 V0.5%
Isc18.42 A18.44 A0.1%
Impp17.51 A17.29 A1.3%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Seraphim SRP-660-BMC-HV

660 W

PERC
79Acceptable
ParameterOriginalReplacementDeviation
Voc46.54 V45.88 V1.4%
Vmpp37.98 V38.16 V0.5%
Isc18.42 A18.44 A0.1%
Impp17.51 A17.29 A1.3%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Yingli Solar YL660DF66 f/2

660 W

PERC
76Acceptable
ParameterOriginalReplacementDeviation
Voc46.54 V45.7 V1.8%
Vmpp37.98 V37.9 V0.2%
Isc18.42 A18.48 A0.3%
Impp17.51 A17.42 A0.5%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Seraphim SRP-655-BMC-HV

655 W

PERC
75Acceptable
ParameterOriginalReplacementDeviation
Voc46.54 V45.68 V1.8%
Vmpp37.98 V37.96 V0.1%
Isc18.42 A18.39 A0.2%
Impp17.51 A17.25 A1.5%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°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

46.54 V

Vmpp

37.98 V

Isc

18.42 A

Impp

17.51 A

TcVoc

-0.25 %/°C

TcPmax

-0.34 %/°C

Pmax

665 W

Cells

132

Bifaciality

70%

Length

2383 mm

Width

1302 mm

Thickness

35 mm

Weight

37.9 kg

The S-Energy SL85-66BDL-665R 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

ModelPowerVocIsc
SL85-66BDL-645R645 W45.74 V18.22 A
SL85-66BDL-650R650 W45.94 V18.27 A
SL85-66BDL-655R655 W46.16 V18.32 A
SL85-66BDL-660R660 W46.36 V18.37 A

Frequently Asked Questions

What specs must match when replacing the S-Energy SL85-66BDL-665R?

The most critical specs to match are: cell count (must be exactly 132), Voc close to 46.54 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 S-Energy SL85-66BDL-665R?

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 S-Energy SL85-66BDL-665R.