"A heavy-duty anodized aluminum frame provides strength and convenient mounting access. Cells are laminated between high transmissivity, low-iron, 3mm tempered glass and sheet tedlar-polyester-tedlar (TPT) material by two sheets of ethylene Vinyl acetate (EVA). This protects against moisture penetrating into the module. Poly-Crystalline cells are up to 20% efficient and is said to have a service life of about 25 years. Output Power (peak): 10W Max Power Voltage(Vmp): 17.6v Max Power Current(Imp): 0.57A Open Circuit Voltage(Voc): 21.6v Short Circuit Current(ISC): 0.61A Working Temperature: -45C to +85C Tolerance: ± 5% Size: 356x301x28mm Recommended Controller: 12V-3A" When using a solar panel to charge a battery, a Solar Charge Controller is required and sold separately.
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