IBM PS/2 Model 70 battery and keeping time

[Den2016]

I'm sorry if this is a stupid question. I didn't really search in the forum for the same question (because it's probably a stupid question).

Does the PS/2 keep time? My PS/2 doesn't. I noticed when I remove the battery I have to use the reference disk to be able to boot
my computer. And one of the requirements to boot the computer is to set the date/time. So it seems to me that my battery is Ok.

The computer remembers the date and time but when I shut it off and say start it back up on the next day it only remembers yesterdays
date/time. So what gives?

 

[Stone]

Sounds like the clock is only working while the computer is on which could be an indicator that the battery needs to be replaced.

 

[krebizfan]

The good news is the Model 70 does not use the evil Dallas RTC but instead an easily replaced battery. http://www.tavi.co.uk/ps2pages/battery.html#72X8498

 

[modem7]

The computer remembers the date and time but when I shut it off and say start it back up on the next day it only remembers yesterdays
date/time. So what gives?

I have seen 'clock not ticking when PS/2 powered off' before, on model 50's, and the answer then was to load DASDDRVR.SYS
See [here] and [here].

 

[Den2016]

Thanks for the help!

I tried copying the DASDDRVR.SYS from the Reference Disk to C: drive and loaded it in my CONFIG.SYS but it didn't help.

I'll try the battery next.

 

[Den2016]

I'm getting a reading of 3V for the battery. Time to replace it.

Thanks for the help.