英语介绍个产品

Solar flashlight, for example, if there is no built-in battery, you can only let it lighting in the sun light. Should not be many people will make such a move. Solar energy products, the main design concept is to drive product by unstable, a small current of electricity produced by solar panel stored in batteries. When needed to provide a stable electrical drive power. Every second of current solar panels produced may be small. But Long accumulated enough power to electrical power. Because we are not a lot of electronic products 24 hours a day to work, we usually use the flashlight lighting time to time is not very long.
If the use of solar energy flashlight, put it on the windowsill usually empty charge under the sun completely meet our needs. 2-3 years do not replace the battery, both economical and environmentally friendly, why not?