whoopstor 3 slim otg charger

i tried to create an adapter to charge on the go without damaging the batteries
it is removable and doesnt modify the charge its self
i have relesed now because im not the best at cad and it could do with improvements and hoping someone will take intrest in improveing it
i have included the cad file to make it easy to modify

links to wiring/conectors
https://www.aliexpress.com/item/1005010745622278.html?spm=a2g0o.order_list.order_list_main.10.34c51802CAVwf9
https://www.aliexpress.com/item/1005004465425088.html?spm=a2g0o.order_list.order_list_main.16.34c51802CAVwf9