as others have said…dangerous setup…no CC/CV charge control for that Li Ion pack…
I wonder if just wadding up a chunk of 0000 steel wool and pushing it thru the tube w/ a broom handle a few dozen times wouldn’t “frost” it up enough…
Seriously…if you plan on using it and using just a regular 5vdc input…put a TP4056 board w/ battery protection on that battery
Definitely a nice looking under hood light…anemic battery though
Oh yeah…welcome to the forum 