I'm trying to find out, what exactly is powered by the battery in the Ledger Nano X.. Apparently it can get power from USB-C, when connected to a desktop, just like S. Then why do I have to worry about charging at all?? So far I only read about it, how long the battery lasts and how often I should charge it, but nothing about it, why he's there at all. My guess is, that the battery is required for the Bluetooth function. I don't mean to, Using Bluetooth on such a sensitive device at all. I hope, I can turn off the BT completely.