NiCd battery replacement in vintage computers

Chuck Guzis cclist at
Mon Feb 8 10:30:27 CST 2016

On 02/08/2016 06:55 AM, Maciej W. Rozycki wrote:

> As a matter of interest I've checked the MC146818 datasheet and it
> claims a 50µA current draw in the usual configuration with a 32768Hz
> oscillator.

Yup.  And things have only gotten better with time.  I suspect that you 
could power the '818 RTC with a few slices of potato and scavenged wire 
for several months.


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