21700 4s PD QC 100W Power Bank Enclosure - Free 3D Print Model

Search models, users, collections, and posts

Yaroslav Ryabtsev

Hobby & DIY>Other Hobby & DIY

IP Report

Print Profile(0)

Add the first print profile to earn points

Boost

100

Released

Description

Summary

Adaptation of a power bank PCB from Aliexpress with all major quick charging protocols and cell balancing.

Holes are almost necessary. Heat output is around 10w in the worst case scenario.
Cells overheat at maximum charging power even with holes, black material color and passive airflow.

PETG or ABS/PC recommended. PCB reaches up to 70°C.

Screws are M3x10.
Doesn't use threaded inserts, since it's a one-time assembly.

Printing recommendations:
I recommend printing with supports only on the sides. Port holes can be left without them.
Alternative is using "Make Overhang Printable" in Cura. Alleviates the need of scraping off supports, but in the end it's less comfortable to use.

It's a function-driven design, eh. Gotta stop somewhere.

Just search "100w pd power bank module" on AliExpress. There are dozens of them.

Step file attached. Stl's are lame.

Feel free to comment. Any criticism is welcome. And if you need something like this made or rendered for you, find me on Upwork

Comment & Rating (4)

@marine_tugah

Love the design and this board seams to be very powerful but this design is not very acruate to 21700 cells

@loku123

Fyi that thing does not have any sort of cell balancing, so you should use a separate unit for that. It's quite dangerous to use it like that - without any balancing, but the model doesn't seem bad :)