Running your smartphone from a PowerBank.

[tomx2]

Hi.
Some PowerBanks (external batteries) products with large mah advertise x number of charges your smartphone will get after 100% charged.

If you run your mobile(100% charged) from your PB(100% charged) will you get the same x number of charges from your PowerBank? Are there disadvantages running a 100% charged mobile from a PB. Then using your mobile after draining the PB batteries?

TC.

 

[hang-the-9]

Technically you will get one long charge from the power bank if you do this. Phone will drop charge, power bank will charge it, phone drops charge again, power bank charges it again, till the power bank batteries are drained, then the phone battery will drain. This is not good for either device really.