It can take a while, I'd let it sit with either good batteries or external power 24 hours before expecting the internal battery to be charged enough to hold data for any period of time. also you need the switch on the bottom for memory power to be on.
If your internal battery hasn't been replaced in the last 30 years, replace it.. it's bad.. trust us.. probably is leaking or about too Greg On Mon, Aug 17, 2020 at 2:13 PM Victor Roberts <[email protected]> wrote: > Quite by accident I found my Model 102 sitting on a bookshelf while I > was looking for something else. > > I installed charged batteries, turned it on, and set the day, date and > time. I then played with the editor for a bit before setting it down. > However, when I came back to the unit about 30 minutes later, it had > timed out, and when I turned it back on all the data I entered was gone: > day, date, time & editor file. (The Memory Power switch on the bottom is > set to ON.) > > I know the unit has a backup battery used to maintain the memory during > battery changes, but I had thought the main batteries would be used to > maintain the memory when the unit was off. Am I incorrect? > > If so, how long does it take to recharge the backup battery, assuming of > course it is still good? > > Can I keep the T102 from shutting down due to inactivity? That is, is > there a timeout adjustment command in BASIC? > > If not, I assume the backup battery can be charged using the AC adapter. > However, I do not think I have the original adapter. I see the voltage > is 6 volts. Can anyone tell me if the center pin of the connector is > positive or negative? (I know positive is much more common, but some > devices use connectors with negative center pins relative to the barrel.) > > Thanks in advance. > > Vic Roberts > > >
