Hi @MORA
I have tried another USB powerbank (20,000mAh) but it just switches off so it makes it a total of three power banks acting the same way.
So did you managed to get the Power bank with on/off switch to work?
Guys: How do you all handle Photon’s load dropping below 50-100mA that causes the bank will disconnect the load completely
Pinging @peekay123 if he has any experience with this. 
Please note that those power banks are branded products such as Sony and etc.
Thank you.