Compare ET Solar Group ET-M660290WW/WB vs BQ Solartech BQ-405-BMA-DG

Warranty Terms

Output Warranty:

25 Years of 81.4% Output Power

Materials Warranty: 10 Years

Panel Performance

Rated Power: 290 Wp

Efficiency: 17.83 %

Voltage at Maximum Power VMPP: 32.12 V

Current at Maximum Power IMPP: 9.03 A

Open Circuit Voltage VOC: 39.68 V

Short Circuit Current ISC: 9.59 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: -0.42 %/°C

Temperature Coefficient of Voc: -0.3 %/°C

Temperature Coefficient of Isc: 0.05 %/°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:

30 Years of 83% Output Power

Materials Warranty: 15 Years

Panel Performance

Rated Power: 405 Wp

Efficiency: 19.82 %

Voltage at Maximum Power VMPP: 41.9 V

Current at Maximum Power IMPP: 9.67 A

Open Circuit Voltage VOC: 49.7 V

Short Circuit Current ISC: 10.19 A

Power Tolerance Positive: + 1 %

Maximum System Voltage: 1500 V

Solar Panels Thermal Ranges

Operating Temperature Range: -40~85 °C

Temperature Coefficient of Pmax: -0.36 %/°C

Temperature Coefficient of Voc: -0.28 %/°C

Temperature Coefficient of Isc: 0.05 %/°C

Solar Panel Attributes

Weight: 24 kg

Cell Type: PERC, Bifacial

Cell Count: 144

Glass Thickness: unknown

Juntion Box Protection Class: IP 68

Cable Length: 1200 mm

Glass Type: Anti-reflection Coating, Low Iron