I have a simple question: When I plug in my phone while it is on to charge, am I:
Another way to phrase the question potentially could be: If I were to open my phone an remove the battery, could I still power it by the USB port?
Background: I have a use case - Enduro riding and using my android phone for my main electronic navigation. I have a USB charger on my bike (1.0 amp and 2.1 amp port) but seems when I plug in my phone to navigate, despite getting 2.1amp, the battery is still slowly draining. What is the matter here?
I have toyed with the idea of taking an old phone and flashing it with a base android ROM and only installing my navigation app, remove the battery (weight), only powering by USB, and basically making it a nav device only.
If all power from the USB has to pass through the battery (charging) to power the phone, and you only use it tethered to a USB charger, what happens when the battery is thoroughly finished?
I look forward to all your comments Thanks