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Features[ edit ] Solar powered flashlights vary in features and capabilities. A typical solar flashlight can give useful levels of illumination on objects up to 50 metres away, and beam may be visible for much longer distances.
The solar cells used for battery charging have an indefinite life expectancy. A solar powered flashlight may give several hours of light after being charged during the day.
Some models include a hand crank dynamo for charging at night. The light output and run time of the solar flashlight are limited by the amount of energy that can be absorbed in a day.
Flashlights are usually stored indoors or otherwise out of direct sunlight; consumers may find it inconvenient to remember to place the flashlight in full sunlight for several hours before use. Rechargeable cells self-discharge, so unless the flashlight is stored in a sunny location, the light may not function in an emergency.
Some of these disadvatages can be mitigated by separating the solar cell array from the flashlight, but then the simplicity of automatic charging is lost.Solar Street Light system is designed for outdoor application in un-electrified remote rural areas.
This system is an ideal application for campus and village street.
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