USB powered "fake" battery pack adapter?

[brickviking]

(04-14-2018 09:44 PM)ijabbott Wrote:  

(04-14-2018 12:11 PM)pier4r Wrote:  So far the usb powered systems are the casio with "usb power graphic" label (9860g, 9860gII, various fx-cg10,20,50, etc..)

I'm pretty sure those Casios are all powered only by batteries, with the USB connection only being used for data transfer.

At least in my case, I'm able to run my fx-9750gII calculator with the USB cable connected, while I change batteries. I don't think that's unusual, I suspect the fx-9860gII can as well. Of course it's better to run with batteries, as the USB simply won't charge batteries, which perhaps is the important point of this statement.

(Post 201)