Are power banks a common thing in the part of the world where you're staying? Over here in my country, depending on the part of state which you're staying, it's going to be suicide for you not to have a power bank of at least 10,000 mAh power capacity. This is because of the unstable and insufficient power supply those places experience. I'm using 27,000 mAh power bank. It can last me for 1 week without needing to charge my smartphone.
Do you make use of power banks?
Do you make use of power banks?