USB powered "fake" battery pack adapter?

[pier4r]

(04-14-2018 09:44 PM)ijabbott Wrote:  I'm pretty sure those Casios are all powered only by batteries, with the USB connection only being used for data transfer.

Nope. they can operate on USB only.
https://youtu.be/kqi_42Kyrww

@maximilian. If you check my other posts you see that from time to time I process a lot of data. These activities kill a battery pack also during runtime. While USB power is more reliable.