The light source may be white induction, LED, or compact ordinary lights, and use one or several lamps. A minimum view angle of 120 degrees and above is ideal. The light-emitting effectiveness must be 55 lumen/watt or more. The white color temperature range should extend from 5500 to 6500 degrees Kelvin in the system. The life span of the light source should be 5-8 years. The LEDs should not emit ultraviolet light.
Led lighting is gradually used in public and solar led lighting is also very popular. But there are still many countries haven’t popularized solar led light, and they don’t know about solar led light, here are the specifications of solar led light.
Crystalline silicon solar cells or thin films are the basis of the photovoltaic modules. The PV module power output under standard test conditions must register 16.4 volt loading voltage. The PV module's open circuit voltage should be at least 21.0 volts under standard test conditions. The PV module must include a bypass diode to minimize the power reduction due to shade. The PV module must have an anti-reflection coating to increase cell conversion efficiency. The solar panel life span should be 20 to 25 years.
The battery should follow the most recent international standards. The type of battery led light bulbs should be tubular sealed, maintenance-free lead acid batteries. The battery should operate between -40° C to + 55° C. No less than three-quarters of the rated capacity of the battery should lie between fully charged and load cut off conditions. The battery should have a shelf life of up to six months without recharging. The design float life of the battery should be roughly 20 years.