Could be an option
Standalone Android 4.4 and BT to a phone as well.
No way you'll get 4 days' worth of juice but the rest should be covered.
It can do TFA for Google, Microsoft and Steam. Not sure which TFA app you're after.
Standalone Android 4.4 and BT to a phone as well.
No way you'll get 4 days' worth of juice but the rest should be covered.
It can do TFA for Google, Microsoft and Steam. Not sure which TFA app you're after.