I had a bunch of the same battery bank from Staples that I use for cosplay in helmets. Designed this charging dock so I have a better solution for charging my batteries after a convention.

The batteries I used are the in house staples brand, while I have some of the older batteries of this design I do have a couple new ones and they looks to fit as well. https://www.staples.ca/products/3028038-en-basic-tech-5000mah-power-bank-charcoal?listId=search

The cable I used are pretty cheap off of amazon and work well enough. https://a.co/d/0hlqYcFW