LiPo Battery Pack, Micro USB, Rechargeable

This is a LiPo recharge pack I made to power my fume extractor.
http://www.thingiverse.com/thing:69729

Components:
1 - Printed box
2 - Printed snap fit lid
3 - LiPo charge board - TP4056
4 - LiPo Battery
5 - Buck step up to 18V to drive fan at high speed - MT3608

OnShape Design Files:

https://cad.onshape.com/documents/a3b71386d0d3ed8a9002bed9/w/df55292b11f0a3e192ec9f5d/e/e374469fc208d22741a37644

Component Links:

https://www.aliexpress.com/item/Hot-Sale-1pcs-TP4056-1A-Lipo-Ba