645 W TOPCon solar panel with 264 cells. Voc 50.08 V · Isc 15.92 A · TcVoc -0.24%/°C.
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23 panels found · 3687 panels excluded
650 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.08 V | 50.26 V | 0.4% |
| Vmpp | 42.44 V | 42.57 V | 0.3% |
| Isc | 15.92 A | 15.98 A | 0.4% |
| Impp | 15.2 A | 15.27 A | 0.5% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
650 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.08 V | 50.26 V | 0.4% |
| Vmpp | 42.44 V | 42.57 V | 0.3% |
| Isc | 15.92 A | 15.98 A | 0.4% |
| Impp | 15.2 A | 15.27 A | 0.5% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
650 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.08 V | 50.26 V | 0.4% |
| Vmpp | 42.44 V | 42.57 V | 0.3% |
| Isc | 15.92 A | 15.98 A | 0.4% |
| Impp | 15.2 A | 15.27 A | 0.5% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
650 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.08 V | 50.26 V | 0.4% |
| Vmpp | 42.44 V | 42.57 V | 0.3% |
| Isc | 15.92 A | 15.98 A | 0.4% |
| Impp | 15.2 A | 15.27 A | 0.5% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
645 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.08 V | 49.88 V | 0.4% |
| Vmpp | 42.44 V | 42.27 V | 0.4% |
| Isc | 15.92 A | 15.98 A | 0.4% |
| Impp | 15.2 A | 15.26 A | 0.4% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
645 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.08 V | 49.88 V | 0.4% |
| Vmpp | 42.44 V | 42.27 V | 0.4% |
| Isc | 15.92 A | 15.98 A | 0.4% |
| Impp | 15.2 A | 15.26 A | 0.4% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
655 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.08 V | 50.44 V | 0.7% |
| Vmpp | 42.44 V | 42.7 V | 0.6% |
| Isc | 15.92 A | 16.04 A | 0.8% |
| Impp | 15.2 A | 15.34 A | 0.9% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
655 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.08 V | 50.44 V | 0.7% |
| Vmpp | 42.44 V | 42.7 V | 0.6% |
| Isc | 15.92 A | 16.04 A | 0.8% |
| Impp | 15.2 A | 15.34 A | 0.9% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
655 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.08 V | 50.44 V | 0.7% |
| Vmpp | 42.44 V | 42.7 V | 0.6% |
| Isc | 15.92 A | 16.04 A | 0.8% |
| Impp | 15.2 A | 15.34 A | 0.9% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
655 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.08 V | 50.44 V | 0.7% |
| Vmpp | 42.44 V | 42.7 V | 0.6% |
| Isc | 15.92 A | 16.04 A | 0.8% |
| Impp | 15.2 A | 15.34 A | 0.9% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
660 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.08 V | 50.5 V | 0.8% |
| Vmpp | 42.44 V | 42.78 V | 0.8% |
| Isc | 15.92 A | 16.14 A | 1.4% |
| Impp | 15.2 A | 15.43 A | 1.5% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
660 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.08 V | 50.5 V | 0.8% |
| Vmpp | 42.44 V | 42.78 V | 0.8% |
| Isc | 15.92 A | 16.14 A | 1.4% |
| Impp | 15.2 A | 15.43 A | 1.5% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
String Compatibility Calculator
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Panel Matcher
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How the Algorithm Works
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Voc
50.08 V
Vmpp
42.44 V
Isc
15.92 A
Impp
15.2 A
TcVoc
-0.24 %/°C
TcPmax
-0.26 %/°C
Pmax
645 W
Cells
264
Bifaciality
85%
Length
2382 mm
Width
1134 mm
Thickness
30 mm
Weight
32.5 kg
The JinkoSolar JKM645N-66QL6-BDV-L is a 645 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 |
|---|---|---|---|
| JKM650N-66QL6-BDV-L | 650 W | 50.26 V | 15.98 A |
| JKM655N-66QL6-BDV-L | 655 W | 50.44 V | 16.04 A |
| JKM660N-66QL6-BDV-L | 660 W | 50.5 V | 16.14 A |
| JKM665N-66QL6-BDV-L | 665 W | 50.55 V | 16.24 A |
| JKM670N-66QL6-BDV-L | 670 W | 50.6 V | 16.34 A |
The most critical specs to match are: cell count (must be exactly 264), Voc close to 50.08 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 JinkoSolar JKM645N-66QL6-BDV-L.