How can I open?
I have Anker Astro E4 13000mAh power bank.
Some day I broke USB output port (see photo).
I want to try repair it by myself. But I can't open housing of power bank.
I was looking for a way to fix my _input_ connector on my E5 and found this (here) discussion as well as this (link) solution. This may work for your model.
it appears the end panels on the battery are just stuck on, and cover the screws that hold on the outer case