USB powered "fake" battery pack adapter?

[brickviking]

(04-19-2018 10:46 AM)grsbanks Wrote:  

(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. ...

... (doesn't the fx-9750GII have a coin cell for memory backup?) ...

My gII doesn't, although my g+ does. That surprised me when I received the gII, as I was expecting it to also have a coin cell backup.

I did strike lucky getting a unit that has flash memory, which allowed a 9860gII OS upgrade to work properly. According to the manual, the 9750gII doesn't support backup of data to flash, but the 9860 OS upgrade makes that function work. The only 9860 function that doesn't work is the backlight, because the physical hardware isn't on the board.

(Post 202)