Little Charger for Soundboks Battery. 

Positive Sideeffect: You could also charge your phone / Laptop with your soundboks battery like with a powerbank. Power is about 40W

IP2368 module is configured to 3A CC, 3,51V/cell.
Design is made for Ruthex M2 inserts. Used M2x8 hex countersunk head screws.
Load LED1-4 + top part as one in your slicer to get the leds in correct postion. I printed the LED parts in white to get a window like effect (see picture).

Positive Sideeffect: You could also charge your phone / Laptop with your soundboks battery like with a powerbank. Power is about 40W
Some links:
Ruthex M2 inserts:
https://www.ruthex.de/collections/gewindeeinsatze/products/ruthex-gewindeeinsatz-m2-70-stuck-rx-m2x4-messing-gewindebuchsen
IP2368:
https://a.aliexpress.com/_Euhtwq1
Heatsink (25x25x5mm):
https://a.aliexpress.com/_Ex1Jt4h
DC-Jack 5,5x2,1, all metal, Type D:
https://a.aliexpress.com/_EJrzoDf

Change the following resistors (0603) on IP2368 module:
R2: 1k
R3: 15k
R4: 4k
R5: 10k