Find replacement for Astronergy CHSM66RNDGF-BQ670

670 W TOPCon solar panel with 264 cells. Voc 49.58 V · Isc 16.87 A · TcVoc -0.23%/°C.

Original Panel

Select the panel you want to replace

Same technology onlyShow only panels with matching cell technology

Compatible Replacements

28 panels found · 4311 panels excluded

Astronergy CHSM66RNDGF-BQ665

665 W

TOPCon

94Good match

Parameter	Original	Replacement	Deviation
Voc	49.58 V	49.43 V	0.3%
Vmpp	41.65 V	41.52 V	0.3%
Isc	16.87 A	16.8 A	0.4%
Impp	16.09 A	16.02 A	0.4%
TcVoc	-0.23 %/°C	-0.23 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Astronergy CHSM66RNDGF-BQ660

660 W

TOPCon

87Good match

Parameter	Original	Replacement	Deviation
Voc	49.58 V	49.28 V	0.6%
Vmpp	41.65 V	41.4 V	0.6%
Isc	16.87 A	16.72 A	0.9%
Impp	16.09 A	15.94 A	0.9%
TcVoc	-0.23 %/°C	-0.23 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Astronergy CHSM66RNDGF-BQ655

655 W

TOPCon

81Good match

Parameter	Original	Replacement	Deviation
Voc	49.58 V	49.13 V	0.9%
Vmpp	41.65 V	41.27 V	0.9%
Isc	16.87 A	16.65 A	1.3%
Impp	16.09 A	15.87 A	1.4%
TcVoc	-0.23 %/°C	-0.23 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Astronergy CHSM66RNDGF-BQ650

650 W

TOPCon

75Acceptable

Parameter	Original	Replacement	Deviation
Voc	49.58 V	48.98 V	1.2%
Vmpp	41.65 V	41.14 V	1.2%
Isc	16.87 A	16.58 A	1.7%
Impp	16.09 A	15.8 A	1.8%
TcVoc	-0.23 %/°C	-0.23 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Canadian Solar CS6.3-66TB-650

650 W

TOPCon

64Acceptable

Parameter	Original	Replacement	Deviation
Voc	49.58 V	50 V	0.8%
Vmpp	41.65 V	42.5 V	2.0%
Isc	16.87 A	16.19 A	4.0%
Impp	16.09 A	15.31 A	4.8%
TcVoc	-0.23 %/°C	-0.22 %/°C	±0.010 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Canadian Solar CS6.3-66TB-655

655 W

TOPCon

58Marginal

Parameter	Original	Replacement	Deviation
Voc	49.58 V	50.2 V	1.3%
Vmpp	41.65 V	42.7 V	2.5%
Isc	16.87 A	16.25 A	3.7%
Impp	16.09 A	15.36 A	4.5%
TcVoc	-0.23 %/°C	-0.22 %/°C	±0.010 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

JinkoSolar JKM650N-66QL6-BDV-L

650 W

TOPCon

55Marginal

Parameter	Original	Replacement	Deviation
Voc	49.58 V	50.26 V	1.4%
Vmpp	41.65 V	42.57 V	2.2%
Isc	16.87 A	15.98 A	5.3%
Impp	16.09 A	15.27 A	5.1%
TcVoc	-0.23 %/°C	-0.24 %/°C	±0.010 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

JinkoSolar JKM650N-66QL6-BDX

650 W

TOPCon

55Marginal

Parameter	Original	Replacement	Deviation
Voc	49.58 V	50.26 V	1.4%
Vmpp	41.65 V	42.57 V	2.2%
Isc	16.87 A	15.98 A	5.3%
Impp	16.09 A	15.27 A	5.1%
TcVoc	-0.23 %/°C	-0.24 %/°C	±0.010 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

JinkoSolar JKM650N-66QL6-BDV-AntiGlare

650 W

TOPCon

55Marginal

Parameter	Original	Replacement	Deviation
Voc	49.58 V	50.26 V	1.4%
Vmpp	41.65 V	42.57 V	2.2%
Isc	16.87 A	15.98 A	5.3%
Impp	16.09 A	15.27 A	5.1%
TcVoc	-0.23 %/°C	-0.24 %/°C	±0.010 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

JinkoSolar JKM650N-66QL6-BDV

650 W

TOPCon

55Marginal

Parameter	Original	Replacement	Deviation
Voc	49.58 V	50.26 V	1.4%
Vmpp	41.65 V	42.57 V	2.2%
Isc	16.87 A	15.98 A	5.3%
Impp	16.09 A	15.27 A	5.1%
TcVoc	-0.23 %/°C	-0.24 %/°C	±0.010 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Canadian Solar CS6.3-66TB-660

660 W

TOPCon

52Marginal

Parameter	Original	Replacement	Deviation
Voc	49.58 V	50.4 V	1.7%
Vmpp	41.65 V	42.9 V	3.0%
Isc	16.87 A	16.31 A	3.3%
Impp	16.09 A	15.41 A	4.2%
TcVoc	-0.23 %/°C	-0.22 %/°C	±0.010 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

JinkoSolar JKM655N-66QL6-BDV

655 W

TOPCon

50Marginal

Parameter	Original	Replacement	Deviation
Voc	49.58 V	50.44 V	1.7%
Vmpp	41.65 V	42.7 V	2.5%
Isc	16.87 A	16.04 A	4.9%
Impp	16.09 A	15.34 A	4.7%
TcVoc	-0.23 %/°C	-0.24 %/°C	±0.010 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°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

49.58 V

Vmpp

41.65 V

Isc

16.87 A

Impp

16.09 A

TcVoc

-0.23 %/°C

TcPmax

-0.26 %/°C

Pmax

670 W

Cells

264

Bifaciality

85%

Length

2382 mm

Width

1134 mm

Thickness

30 mm

Weight

32 kg

The Astronergy CHSM66RNDGF-BQ670 is a 670 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
CHSM66RNDGF-BQ645	645 W	48.83 V	16.5 A
CHSM66RNDGF-BQ650	650 W	48.98 V	16.58 A
CHSM66RNDGF-BQ655	655 W	49.13 V	16.65 A
CHSM66RNDGF-BQ660	660 W	49.28 V	16.72 A
CHSM66RNDGF-BQ665	665 W	49.43 V	16.8 A

Frequently Asked Questions

What specs must match when replacing the Astronergy CHSM66RNDGF-BQ670?

The most critical specs to match are: cell count (must be exactly 264), Voc close to 49.58 V (within ±5%), and temperature coefficient TcVoc close to -0.23%/°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 Astronergy CHSM66RNDGF-BQ670?

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 Astronergy CHSM66RNDGF-BQ670.

All replacements

Find replacement for Astronergy CHSM66RNDGF-BQ670

670 W TOPCon solar panel with 264 cells. Voc 49.58 V · Isc 16.87 A · TcVoc -0.23%/°C.

Original Panel

Select the panel you want to replace

Same technology onlyShow only panels with matching cell technology

Compatible Replacements

28 panels found · 4311 panels excluded

Astronergy CHSM66RNDGF-BQ665

665 W

TOPCon

94Good match

Parameter	Original	Replacement	Deviation
Voc	49.58 V	49.43 V	0.3%
Vmpp	41.65 V	41.52 V	0.3%
Isc	16.87 A	16.8 A	0.4%
Impp	16.09 A	16.02 A	0.4%
TcVoc	-0.23 %/°C	-0.23 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Astronergy CHSM66RNDGF-BQ660

660 W

TOPCon

87Good match

Parameter	Original	Replacement	Deviation
Voc	49.58 V	49.28 V	0.6%
Vmpp	41.65 V	41.4 V	0.6%
Isc	16.87 A	16.72 A	0.9%
Impp	16.09 A	15.94 A	0.9%
TcVoc	-0.23 %/°C	-0.23 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Astronergy CHSM66RNDGF-BQ655

655 W

TOPCon

81Good match

Parameter	Original	Replacement	Deviation
Voc	49.58 V	49.13 V	0.9%
Vmpp	41.65 V	41.27 V	0.9%
Isc	16.87 A	16.65 A	1.3%
Impp	16.09 A	15.87 A	1.4%
TcVoc	-0.23 %/°C	-0.23 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Astronergy CHSM66RNDGF-BQ650

650 W

TOPCon

75Acceptable

Parameter	Original	Replacement	Deviation
Voc	49.58 V	48.98 V	1.2%
Vmpp	41.65 V	41.14 V	1.2%
Isc	16.87 A	16.58 A	1.7%
Impp	16.09 A	15.8 A	1.8%
TcVoc	-0.23 %/°C	-0.23 %/°C	±0.000 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Canadian Solar CS6.3-66TB-650

650 W

TOPCon

64Acceptable

Parameter	Original	Replacement	Deviation
Voc	49.58 V	50 V	0.8%
Vmpp	41.65 V	42.5 V	2.0%
Isc	16.87 A	16.19 A	4.0%
Impp	16.09 A	15.31 A	4.8%
TcVoc	-0.23 %/°C	-0.22 %/°C	±0.010 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Canadian Solar CS6.3-66TB-655

655 W

TOPCon

58Marginal

Parameter	Original	Replacement	Deviation
Voc	49.58 V	50.2 V	1.3%
Vmpp	41.65 V	42.7 V	2.5%
Isc	16.87 A	16.25 A	3.7%
Impp	16.09 A	15.36 A	4.5%
TcVoc	-0.23 %/°C	-0.22 %/°C	±0.010 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

JinkoSolar JKM650N-66QL6-BDV-L

650 W

TOPCon

55Marginal

Parameter	Original	Replacement	Deviation
Voc	49.58 V	50.26 V	1.4%
Vmpp	41.65 V	42.57 V	2.2%
Isc	16.87 A	15.98 A	5.3%
Impp	16.09 A	15.27 A	5.1%
TcVoc	-0.23 %/°C	-0.24 %/°C	±0.010 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

JinkoSolar JKM650N-66QL6-BDX

650 W

TOPCon

55Marginal

Parameter	Original	Replacement	Deviation
Voc	49.58 V	50.26 V	1.4%
Vmpp	41.65 V	42.57 V	2.2%
Isc	16.87 A	15.98 A	5.3%
Impp	16.09 A	15.27 A	5.1%
TcVoc	-0.23 %/°C	-0.24 %/°C	±0.010 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

JinkoSolar JKM650N-66QL6-BDV-AntiGlare

650 W

TOPCon

55Marginal

Parameter	Original	Replacement	Deviation
Voc	49.58 V	50.26 V	1.4%
Vmpp	41.65 V	42.57 V	2.2%
Isc	16.87 A	15.98 A	5.3%
Impp	16.09 A	15.27 A	5.1%
TcVoc	-0.23 %/°C	-0.24 %/°C	±0.010 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

JinkoSolar JKM650N-66QL6-BDV

650 W

TOPCon

55Marginal

Parameter	Original	Replacement	Deviation
Voc	49.58 V	50.26 V	1.4%
Vmpp	41.65 V	42.57 V	2.2%
Isc	16.87 A	15.98 A	5.3%
Impp	16.09 A	15.27 A	5.1%
TcVoc	-0.23 %/°C	-0.24 %/°C	±0.010 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

Canadian Solar CS6.3-66TB-660

660 W

TOPCon

52Marginal

Parameter	Original	Replacement	Deviation
Voc	49.58 V	50.4 V	1.7%
Vmpp	41.65 V	42.9 V	3.0%
Isc	16.87 A	16.31 A	3.3%
Impp	16.09 A	15.41 A	4.2%
TcVoc	-0.23 %/°C	-0.22 %/°C	±0.010 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C

JinkoSolar JKM655N-66QL6-BDV

655 W

TOPCon

50Marginal

Parameter	Original	Replacement	Deviation
Voc	49.58 V	50.44 V	1.7%
Vmpp	41.65 V	42.7 V	2.5%
Isc	16.87 A	16.04 A	4.9%
Impp	16.09 A	15.34 A	4.7%
TcVoc	-0.23 %/°C	-0.24 %/°C	±0.010 %/°C
TcPmax	-0.26 %/°C	-0.26 %/°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

49.58 V

Vmpp

41.65 V

Isc

16.87 A

Impp

16.09 A

TcVoc

-0.23 %/°C

TcPmax

-0.26 %/°C

Pmax

670 W

Cells

264

Bifaciality

85%

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
CHSM66RNDGF-BQ645	645 W	48.83 V	16.5 A
CHSM66RNDGF-BQ650	650 W	48.98 V	16.58 A
CHSM66RNDGF-BQ655	655 W	49.13 V	16.65 A
CHSM66RNDGF-BQ660	660 W	49.28 V	16.72 A
CHSM66RNDGF-BQ665	665 W	49.43 V	16.8 A