What power bank does your smartphone use?

[AC Question]

As title what power bank does your smartphone use?

 

[hallux]

I have 2 Anker units for use with both my Nexus 6p and my Samsung tablet. One is a 15,000 mAh pack with 2 USB-A ports, the other is a 5,000 mAh with a single USB-A port.

I have to use a USB-A to USB-C cable for my Nexus, if I replace the tablet I'll likely replace the larger power pack as I'll want one with native USB-C.