Find replacement for RECOM RCM-670-SDMT2

670 W PERC solar panel with 414 cells. Voc 47.1 V · Isc 18.26 A · TcVoc -0.27%/°C.

Original Panel

Select the panel you want to replace

Panel not in the catalogue?

5 of the 4,444 panels in the catalogue can replace RECOM RCM-670-SDMT2. Before you buy, check your pick in the string calculator with your inverter.

CloseNoticeableLarge differenceTap or click a difference to see what it means for your string.

Exact match

Near-identical electrics — a drop-in swap for the same string.

Match 95 % · 2 models

RECOM RCM-665-SDMT2 — Open the panel page
665 WPERCsame series
95 %
RECOM RCM-675-SDMT2 — Open the panel page
675 WPERCsame series
95 %

Good match

Small differences within tolerance — safe once verified in the calculator with your inverter.

Match 80–90 % · 3 models

RECOM RCM-660-SDMT2 — Open the panel page
660 WPERCsame series
90 %
RECOM RCM-655-SDMT2 — Open the panel page
655 WPERCsame series
85 %
RECOM RCM-650-SDMT2 — Open the panel page
650 WPERCsame series
80 %

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

47.1 V

Vmpp

39.1 V

Isc

18.26 A

Impp

17.16 A

TcVoc

-0.27 %/°C

TcPmax

-0.34 %/°C

Pmax

670 W

Cells

414

Bifaciality

70%

Length

2384 mm

Width

1303 mm

Thickness

35 mm

Weight

38.5 kg

The RECOM RCM-670-SDMT2 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
RCM-645-SDMT2	645 W	46.6 V	17.74 A
RCM-650-SDMT2	650 W	46.7 V	17.84 A
RCM-655-SDMT2	655 W	46.8 V	17.97 A
RCM-660-SDMT2	660 W	46.9 V	18.06 A
RCM-665-SDMT2	665 W	47 V	18.16 A
RCM-675-SDMT2	675 W	47.2 V	18.36 A

Frequently Asked Questions

What specs must match when replacing the RECOM RCM-670-SDMT2?

The most critical specs to match are: cell count (must be exactly 414), Voc close to 47.1 V (within ±5%), and temperature coefficient TcVoc close to -0.27%/°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-670-SDMT2?

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-670-SDMT2.

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