685 W HJT solar panel with 132 cells. Voc 49.71 V · Isc 17.15 A · TcVoc -0.22%/°C.
Select the panel you want to replace
Voc
49.71 V
Vmpp
42.32 V
Isc
17.15 A
Impp
16.19 A
TcVoc
-0.22 %/°C
TcPmax
-0.24 %/°C
Pmax
685 W
Cells
132
Bifaciality
90%
The Akcome SKA611HDGDC-685 is a 685 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 |
|---|---|---|---|
| 680 W | 49.51 V | 17.13 A | |
| 690 W | 49.91 V | 17.17 A | |
| 695 W | 50.11 V | 17.19 A | |
| 700 W | 50.31 V | 17.21 A |
The most critical specs to match are: cell count (must be exactly 132), Voc close to 49.71 V (within ±5%), and temperature coefficient TcVoc close to -0.22%/°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 Akcome SKA611HDGDC-685.