505 W HJT solar panel with 108 cells. Voc 41.82 V · Isc 15.47 A · TcVoc -0.24%/°C.
Select the panel you want to replace
Panel not in the catalogue?
123 of the 4,444 panels in the catalogue can replace RECOM RCM-505-RDBHG. 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.
Small differences within tolerance — safe once verified in the calculator with your inverter.
Match 83–93 % · 7 models
Noticeable differences — the string voltage and current need a careful check.
Match 60–78 % · 30 models
Large differences — a real risk of a mismatched string; prefer a closer panel.
Match 41–59 % · 86 models
String Compatibility Calculator
Verify the replacement panel works with your inverter
Panel Matcher
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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
Voc
41.82 V
Vmpp
34.49 V
Isc
15.47 A
Impp
14.65 A
TcVoc
-0.24 %/°C
TcPmax
-0.26 %/°C
Pmax
505 W
Cells
108
Bifaciality
90%
Length
1960 mm
Width
1134 mm
Thickness
30 mm
Weight
27.6 kg
The RECOM RCM-505-RDBHG is a 505 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.
| Model | Power | Voc | Isc |
|---|---|---|---|
| RCM-500-RDBHG | 500 W | 41.67 V | 15.42 A |
| RCM-510-RDBHG | 510 W | 41.97 V | 15.52 A |
| RCM-515-RDBHG | 515 W | 42.12 V | 15.57 A |
| RCM-520-RDBHG | 520 W | 42.16 V | 16.02 A |
The most critical specs to match are: cell count (must be exactly 108), Voc close to 41.82 V (within ±5%), and temperature coefficient TcVoc close to -0.24%/°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.
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.
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-505-RDBHG.