NiCd battery replacement in vintage computers
cclist at sydex.com
Sat Feb 6 21:18:03 CST 2016
On 02/06/2016 05:05 PM, Lyndon Nerenberg wrote:
> Voltage? Recharging circuits? Current sinking capacity. It's not
> always a 1:1 mapping.
You're talking about RTC and perhaps a bit of static RAM maintenance.
If this RTC unit is like most of the same era, the operating voltage
range is quite wide (probably about 2-7V) and sub-1ma current draw.
Chargers for this type of application are usually very low current, so
"cooking' some AA cells is a very remote prospect. This is hardly a
If you're not interested in a "authentic" look, a plain old lithium
primary coin cell or two, with a blocking diode in this circuit should
work for years.
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