Model Number: SF-ST-20W Brand Name: SolarFirst Key Specifications/Special Features: Advantages:Above system configurations are based on scientific calculation and engineering project experienceThey are suitable for areas with annual average peak power sunshine of 4.5 hours per dayBattery capacity is designed for 3 days backup in cloudy or rainy weatherThe system configurations can be customized based on clients' specific project requirement and weather conditionThe batteries are suggested to be placed in battery box and buried in a underground cement pit In this way, it can avoid over high-temperature due to sunshine exposure or too cold weather in winter, waterproof and theft-proof, easy for replacement in late period

The pole patterns are standardized type, practical and economical, which can also be customized as per clients' specific requirement

All parts are certified by CE and RoHS marks, meeting Europe standards

Specifications:

• Solar panel power: 80W (more than 17.8% of the photoelectric conversion rate)
• Property: imports of mono crystalline, more than 25 years of lifespan
• Battery capacity: 12V/120Ah
• Fully-sealed and maintenance-free lead-acid battery
• Depth of discharge: 80%
• Controller property: 12V DC/15 Al controller specially designed for solar street lamps
• Functions: protection against over-charge and over-discharge, light control and time controlling
• Light source power: 20W super bright LED
• Average luminance range: 15 to 18 Lux
• Color temperatures: 2,700-12,000K
• Luminous flux range: 3,000-3,500lm Lamp post height: 6m
• Thicknesses: 3-4mm
• Property: steel over striking and thickening and thickening, hot galvanization spraying plastic
• Working time: fully charged lamps may work 6-10 hours a day (adjustable)
• Applicable temperatures: -40 to 50℃
• Wind-proof capacity: ≥150FM/hour