655 W IBC solar panel with 66 cells. Voc 49.55 V · Isc 16.73 A · TcVoc -0.2%/°C.
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6 of the 4,444 panels in the catalogue can replace TCL Zhonghuan HSM-BD66-GR655. Before you buy, check your pick in the string calculator with your inverter.
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Small differences within tolerance — safe once verified in the calculator with your inverter.
Match 82–94 % · 6 models
String Compatibility Calculator
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Panel Matcher
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How the Algorithm Works
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Voc
49.55 V
Vmpp
41.32 V
Isc
16.73 A
Impp
15.86 A
TcVoc
-0.2 %/°C
TcPmax
-0.26 %/°C
Pmax
655 W
Cells
66
Bifaciality
75%
Length
2382 mm
Width
1134 mm
Thickness
30 mm
Weight
33.5 kg
The TCL Zhonghuan HSM-BD66-GR655 is a 655 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 |
|---|---|---|---|
| HSM-BD66-GR640 | 640 W | 49.52 V | 16.38 A |
| HSM-BD66-GR645 | 645 W | 49.25 V | 16.57 A |
| HSM-BD66-GR650 | 650 W | 49.4 V | 16.65 A |
| HSM-BD66-GR660 | 660 W | 49.7 V | 16.8 A |
| HSM-BD66-GR665 | 665 W | 49.85 V | 16.88 A |
| HSM-BD66-GR670 | 670 W | 50 V | 16.95 A |
The most critical specs to match are: cell count (must be exactly 66), Voc close to 49.55 V (within ±5%), and temperature coefficient TcVoc close to -0.2%/°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 TCL Zhonghuan HSM-BD66-GR655.