Universal LED light made from led strips and used li-ion cells.
BOM:
The electronics are really simple, you only need led strips, couple of li-ions (I chose 4 pcs in a 1S4P configuration from a used battery pack), step-up converter to create a constant 12V.
As charger you can use this li-ion charger, or any other 1S li-ion charger.
The author marked this model as their own original creation.