Buid a 3,7v LED Flashlight using PVC Pipe

How to Buid a LED Flashlight using PVC Pipe at home

In this video i am using
+ PVC Pipe, LED Lens
+ DC 3.7V 20W LED Chip
+ 2 Pcs 26650 4000mah battery
+ 3,7v Module Protection Board With Charge
+ 4,2volt 2000ma Adapter
+ Aluminum heat sink and 5v Heatsink Fan
+ DC Jack, Switch on/off...

Thanks for watching, Have a great day !