Help w/Unix-pc Clock battery
Lon Stowell
lstowell at pyrnova.pyramid.com
Wed Feb 20 14:23:11 AEST 1991
In article <1991Feb19.133649.11150 at colnet.uucp> res at colnet.uucp (Rob Stampfli) writes:
>>>Does any one knwo where I can get a spare internal clock battery
>>>for my 7300 unix pc??
>>
>>You can get one at Radio Shack. It's a 3 volt lithium battery. It
>>needs to be soldered into the motherboard, after unsoldering the old
>>one.
>
>Your experience was better than mine. Although Radio Shack does indeed carry
>Lithium 3V batteries (even of the same size and shape as that found in my
>Unix-PC, they did not have any with solder tabs, and the manager where I
>shopped further claimed that no Radio Shack store carried the versions with
>solder tabs.
>--
Mainly because of the unfortunate tendency of lithiums to
spread their contents rapidly around the surrounding real
estate ( i.e. they explode ) if overheated or shorted
out--which causes overheating.
I just checked my CMC catalog and it doesn't list a battery
for the ATT...nor does it list ANY computer battery which
requires soldering of the battery...all units listed come with
a set of wires and a plug...and this catalog is aimed at
repair techies, not the average solder nerd.
If you do solder a lithium, use a good heat sink between the
solder point and the battery itself. Protective glasses
wouldn't be a bad idea. Counter-intuitively, use a LARGE tip
on a high wattage iron to get in and out fast....prior to
heating of the battery itself.
A small piece of crayon on the battery can save your
vision...if it melts, the battery is getting warm...and may
explode.
You should be able to get a new battery from Digikey, etc. by
noting the mfgr's p/n.
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