Compare ET Solar Group ET-M660280BB vs LONGi LR4-72HBD-425M

Warranty Terms

Output Warranty:

25 Years of 81.4% Output Power

Materials Warranty: 10 Years

Panel Performance

Rated Power: 280 Wp

Efficiency: 17.21 %

Voltage at Maximum Power VMPP: 31.01 V

Current at Maximum Power IMPP: 9.03 A

Open Circuit Voltage VOC: 39.26 V

Short Circuit Current ISC: 9.23 A

Power Tolerance Positive: + 1.5 %

Maximum System Voltage: 1000 V

Solar Panels Thermal Ranges

Operating Temperature Range: -40~85 °C

Temperature Coefficient of Pmax: -0.43 %/°C

Temperature Coefficient of Voc: -0.3 %/°C

Temperature Coefficient of Isc: 0.06 %/°C

Solar Panel Attributes

Weight: 18.5 kg

Cell Type: Monocrystalline

Cell Count: 60

Glass Thickness: unknown

Juntion Box Protection Class: IP 67

Cable Length: unknown

Glass Type: unknown

Warranty Terms

Output Warranty:

10 Years of 93.95% Output Power, 30 Years of 84.95% Output Power

Materials Warranty: 10 Years

Panel Performance

Rated Power: 425 Wp

Efficiency: 19.6 %

Voltage at Maximum Power VMPP: 40.4 V

Current at Maximum Power IMPP: 10.52 A

Open Circuit Voltage VOC: 48.7 V

Short Circuit Current ISC: 11.22 A

Power Tolerance Positive: + 1 %

Maximum System Voltage: 1500 V

Solar Panels Thermal Ranges

Operating Temperature Range: -40~85 °C

Temperature Coefficient of Pmax: -0.35 %/°C

Temperature Coefficient of Voc: -0.284 %/°C

Temperature Coefficient of Isc: 0.05 %/°C

Solar Panel Attributes

Weight: 27.5 kg

Cell Type: Bifacial, PERC

Cell Count: 144

Glass Thickness: unknown

Juntion Box Protection Class: IP 68

Cable Length: 300 mm

Glass Type: Tempered, Double Glass