the power support for led
LED is light device of low voltage direct current constant current source.The semiconductor properties of the led are what allow to generate light. so led must require the recombination of p electron and hole. in led design, decision of plan according to product requirements and specifications.
the most important design step of these is power support(determination power supply way).

AC power support:
to convert the high frequency AC power , and generator into steady DC voltage, it would provide a constant currently source for the led.

Rechargeable battery:
The design solution by a rechargeable battery that can be charged via optional solar panel for perpetual use. or using that Built-in rechargeable battery. in here we not have to worry about electricity, because of led light with minimal power consumption. so rechargeable battery is also a good choice.