[Tinni]

I use my power bank only when I am traveling and on the go. Only when I don't find a charger point near me. I have one power bank that I bought few years back and I have still not used it much.

It is possible to use it that way. That's if you make sure to charge your device at home before stepping out.

[Vehlijanta]

It's good you have posted this tip as I am sure at least 98% are not aware of this tip