It was designed for different purposes - charge laptop from battery or charge battery from other power supply, also for supply power to anything through dc cable.
Easy to assemble - solder parts on table, then put everything together into box, only dc's should be soldered after all.
Warning, for this box it is necessary to desolder screw terminals from WZ3605E board.

Parts used:
WZ3605E DC-DC Converter module ➡️ https://ali.ski/XAxavy
QC/PD Charger Module ➡️ https://ali.ski/q2b68
Type-C Quick Charge Trigger ➡️ https://ali.ski/_r_KHG
DC Connector ➡️ https://ali.ski/RbIeU
DC Switch ➡️ https://ali.ski/s0eUB2

Creality

Ender-3 V3 SE

Doesn't Matter

Yes

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