Bike rear light

I used black and transparent PETG for part printing.

Electronic parts are :

• 94x50mm 15W COB LED Light Panel Lamp 12V.
• LiFePO4 cell 26700
• Battery poles spring contact (one negative and one positive)
• MT3608 step-up module
• KCD11 Rocker switch
• A power jack
• 4x M2.5x15 countersunk screw (frame)
• 4x M3x8 screw (mount)

The COB led isn't used at full power. Output voltage of the step-up module is adjusted to obtain the right brightness without burn neither eyes nor Mt3608.

I plan to update (one day...) the step-up with a LiFePO4 charge driver, cell protection and step-up on the same board, with USB-C connector in place of the jack.