Compare ET Solar Group ET-M648WW/WB 235 vs Topsky Electronics TP390M-72

Warranty Terms

Output Warranty:

25 Years of 81.4% Output Power

Materials Warranty: 10 Years

Panel Performance

Rated Power: 235 Wp

Efficiency: 17.89 %

Voltage at Maximum Power VMPP: 25.77 V

Current at Maximum Power IMPP: 9.12 A

Open Circuit Voltage VOC: 31.82 V

Short Circuit Current ISC: 9.65 A

Power Tolerance Positive: + 2 %

Maximum System Voltage: 1000 V

Solar Panels Thermal Ranges

Operating Temperature Range: -40~85 °C

Temperature Coefficient of Pmax: -0.42 %/°C

Temperature Coefficient of Voc: -0.3 %/°C

Temperature Coefficient of Isc: 0.05 %/°C

Solar Panel Attributes

Weight: 15 kg

Cell Type: Monocrystalline

Cell Count: 48

Glass Thickness: unknown

Juntion Box Protection Class: IP 67

Cable Length: unknown

Glass Type: unknown

Warranty Terms

Output Warranty:

12 Years of 90% Output Power, 25 Years of 80.2% Output Power

Materials Warranty: 10 Years

Panel Performance

Rated Power: 390 Wp

Efficiency:

Voltage at Maximum Power VMPP: 40.7 V

Current at Maximum Power IMPP: 9.58 A

Open Circuit Voltage VOC: 49.5 V

Short Circuit Current ISC: 9.92 A

Power Tolerance Positive: + 3 %

Maximum System Voltage: 1500 V

Solar Panels Thermal Ranges

Operating Temperature Range: -40~85 °C

Temperature Coefficient of Pmax: -0.39 %/°C

Temperature Coefficient of Voc: -0.29 %/°C

Temperature Coefficient of Isc: 0.048 %/°C

Solar Panel Attributes

Weight: 22.5 kg

Cell Type: PERC

Cell Count: 72

Glass Thickness: 3.2 mm

Juntion Box Protection Class: IP 67

Cable Length: 900 mm

Glass Type: Tempered, High Transmittance, Low Iron