20W flashlight! Cheap, Small, Handheld and Fan Cooled!

I did not find any cheap, but powerful flashlight to buy so i made one myself.

Total price is about 5-8 euros if u have some spare lithium cells around.

I used old laptop batterys so the runtime for my flashlight is around an hour or so but with goot quality 3000mAh cells the flashlight should last well over an hour.

It daws about 2 A from the batteryes depending on the voltage.

You can easily add a potentsiomiter to controll the power of the light.

If you want to build one yourself make sure you BUY A 12V LED CHIP!!

Most of the 20w chips use 32v.

PARTS:

20W LED 12V : https://www.aliexpress.com/item/4000251299260.html?spm=a2g0s.9042311.0.0.27424c4dXure0r

40mm fan 12V: https://s.click.aliexpress.com/e/_dXeUfHs

Heatsink: https://s.click.aliexpress.com/e/_BffHyqui (Need to cut/saw off a correct size)

Step-up converter 3A (I use them a lot so it is cheaper to buy 10pcs): https://s.click.aliexpress.com/e/_Bf6DExE2

3s BMS board: (does not have balance but is super cheap so use same capacity cells :) https://s.click.aliexpress.com/e/_dTbCzgW

Dc female power jack: https://s.click.aliexpress.com/e/_d7i1QCK

Switch: https://www.aliexpress.com/item/1000005699023.html?spm=a2g0o.productlist.0.0.33e55662B7AsLM&algo_pvid=7dfd21e8-c042-43cb-97fa-d1c85fc2fccf&algo_expid=7dfd21e8-c042-43cb-97fa-d1c85fc2fccf-11&btsid=0bb0623d15991542522057725e54e8&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_

The wireing should be simple so i hopefully i do not need to post instructions :)

Category: 3D Printing