Summary
I recycled some old 18650 Lithium cells from a broken notebook battery-pack and made small desk lamps for tinkering/soldering/sewing etc.
AS LED any will do but I recommend ones at around 1W to 3W max. the one I used has V_Forward of 3.1V and I_Forward of 350mA.
Which got me to a 3.5 Ohms resistor, at least 1/3 W better 1W resistor.
LEDs
switch
Micro USB charging circuit
Tag: Tinkerers
-
Lithium Battery Tinkerers light 3D Print Model