Do you charge the battery in the on or off position?
Do you charge the battery in the on or off position ?
It doesn't look like he is asking how to remove the battery. He is asking about charging the device.
To answer your question, it doesn't matter either way. Whether you charge with a usb power adapter or with your computer, the device can be off or on.
It's generally a good idea to turn electronics off before taking them apart.
Always turn off your electronics before taking them apart, this makes sure to keep both you and the device safe!