Quote:
Originally Posted by Masutin
Thank you all for thoughts!
To clarify, I was wondering about a device that can alternate between DC power (via AC adaptor or USB) and battery power, as in laptops or netbooks?
Even simple phones work while being charged, but I presume the power goes through the battery still, as probably there is no other way. True, portable devices are not meant to be plugged in permanenty. But for uses near a fixed power supply, again laptops and netbooks aside, I envisage a unit with an e-ink or a color screen that uses the battery only as required.
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Well, I don't think you'll find many devices with replaceable rechargeable batteries these days but if you find one and take out the battery and then plug in the external power cable it might work.
It *does* work with the XBOX One wireless controllers: they take disposable or rechargeable batteries, a proprietary LithiumIon battery or... nothing. The controller charges the proprietary battery via a generic USB to micro USB cable and it works just fine as a wired controller with a long enough USB cable.
Other devices may or not work that way but since so few come with user replaceable batteries because thin is in it would have to be an older model most likely.