USB powered "fake" battery pack adapter?

[grsbanks]

(04-19-2018 08:12 AM)brickviking Wrote:  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.

Don't know about the fx-9750GII (doesn't that have a coin cell for memory backup?) but the fx-9860GII saves everything to flash anyway. Pull out the batteries, leave the machine for a week and stick them back in, everything is still there. I found that out by surprise after I'd stored my 9860GII (with no batteries in, of course) and went back to it some time later only to find eveything in it intact.