> external power banks don't really address this use case Can you elaborate on why not? For me they address it far better than swapping out the internal batter

> external power banks don't really address this use case Can you elaborate on why not? For me they address it far better than swapping out the internal battery, since you don't have to interrupt that extended use by powering down the phone to make the switch. They're also way easier to recharge simultaneously, without needing a bank of dummy phones.