WANG AT 316S CMOS Battery \ VOGONS

WANG AT 316S CMOS Battery

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First post, by Formulator

Posted on 2016-08-07, 20:21

Formulator Offline

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Purchased this locally some time ago. Original owner replaced original battery with 4xAAA for a total of 6V. Even so, the clock still runs slow when powered off. Does it simply need lithium VS alkaline? I'd be surprised if this needed more than 6V, although there are some 7.2V packs out there. Header is 2-pin on mainboard.

Also, the manual does not even state the original battery model # of course.

Some time ago Acer 286 clock ran slow and replaced 3xAAA 4.5V battery pack with original 3.6V Tadrian 5242/W pack. Even though less voltage, clock maintains proper time now.

Reply 1 of 2, by h-a-l-9000

Posted on 2016-08-07, 21:28

h-a-l-9000 Offline

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Crystals may get damaged if the voltage is too high. How slow is too slow? And does the RTC really run Ok when powered? DOS / system time is not the same as RTC time.

1+1=10

Reply 2 of 2, by Formulator

Posted on 2016-08-07, 22:56

Formulator Offline

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Location: The Silicon Prairie

The system time loses 80 seconds per hour when not running. Otherwise the system has no other issues.

I am more interested in the problem solving; understanding why it is happening and the proper remedy.

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