Led Lenser P14 21700 conversion

Insert to convert the 4xAA battery carriage to 1x21700 with boost + charging board included.

I used the following parts:

Boost + charging circuit (important to get this one or smaller as space is tight)
https://www.aliexpress.com/item/1005005055977634.html?spm=a2g0o.order_list.order_list_main.157.51831802Ry4zhF

Battery holder:
https://www.aliexpress.com/item/1005003710688498.html?spm=a2g0o.order_list.order_list_main.184.51831802Ry4zhF

Battery protection board:
https://www.aliexpress.com/item/32788948905.html?spm=a2g0o.order_list.order_list_main.409.51831802Ry4zhF

You need to remove the long thin battery supports and reuse everything else. You need to cut off 2 posts and walls off the inside side of the 2 end plates (they are guides for attaching the long battery supports). See photo for more info and how I put it together.

I have my boost converter set to 6v which is equal to 4xAA batteries in series, though you can experiment with lower voltages to get longer lif