[Power bank lights all flashing]

But I am still curious, why was it doing that?

 

@Synthesis

[Power bank lights all flashing]

Actually never mind. It seems that after a whole night's time of flashing, the battery had given up on being annoying.

Everything's working fine and normally now!

[Power bank lights all flashing]

I got the Vive wireless adapter and the power bank as well, and it was working very well until now...

I charged my battery, and when I came back, all of the lights were flashing, and it continued like that even after I unplugged it from the outlet. 

No matter what I pressed, and battery kept flashing all four lights and not giving any power.

It would be really appreciated if someone can help me with this.