Compare Upsolar Global UP-M305M vs OK Solar OKM280

Warranty Terms

Output Warranty:

unknown

Materials Warranty: 10 Years

Panel Performance

Rated Power: 305 Wp

Efficiency: 15.7 %

Voltage at Maximum Power VMPP: 36.2 V

Current at Maximum Power IMPP: 8.43 A

Open Circuit Voltage VOC: 45.5 V

Short Circuit Current ISC: 8.88 A

Power Tolerance Positive: + 3 %

Maximum System Voltage: 1000 V

Solar Panels Thermal Ranges

Operating Temperature Range: -40~90 °C

Temperature Coefficient of Pmax: -0.43 %/°C

Temperature Coefficient of Voc: -0.3 %/°C

Temperature Coefficient of Isc: 0.05 %/°C

Solar Panel Attributes

Weight: 26.5 kg

Cell Type: Monocrystalline

Cell Count: 72

Glass Thickness: 4 mm

Juntion Box Protection Class: IP 65

Cable Length: 1000 mm

Glass Type: Tempered, High Transmittance

Warranty Terms

Output Warranty:

10 Years of 90% Output Power, 25 Years of 80% Output Power

Materials Warranty: 15 Years

Panel Performance

Rated Power: 280 Wp

Efficiency: 17.2 %

Voltage at Maximum Power VMPP: 31.3 V

Current at Maximum Power IMPP: 8.96 A

Open Circuit Voltage VOC: 39.5 V

Short Circuit Current ISC: 9.5 A

Power Tolerance Positive: + 2 %

Maximum System Voltage: 1000 V

Solar Panels Thermal Ranges

Operating Temperature Range: unknown

Temperature Coefficient of Pmax: -0.42 %/°C

Temperature Coefficient of Voc: -0.3 %/°C

Temperature Coefficient of Isc: 0.04 %/°C

Solar Panel Attributes

Weight: 19.5 kg

Cell Type: Monocrystalline

Cell Count: 60

Glass Thickness: 3.2 mm

Juntion Box Protection Class: IP 67

Cable Length: 1100 mm

Glass Type: Tempered, Anti-reflection Coating