Per Backman wrote:
> I have not found any batteryholders for penlightbatteries
> in our town (2.900 inhabitants) or in my house (but a lot
> of other intresting things).
The ones which I originally suggested are sold for
computers and come wired with the appropiate plug. I find
it hard to beleive that it is a Canadian thing and would
not be available at most computer parts shops. At any rate
there is nothing special about them, other than the
convenience of not having to attach the wires oneself.
One thing about Lithium batteries and others which are
commonly used in computers, is that they last longer. Not
so much because they have more "juice" in them, but
because of the shelf life. This is because the draw from
the Cmos is so low as to be unimportant in this case. You
will find that the alkaline or magnesium/zinc or whatever
common torch batteries, have a shorter life. They should
last a couple of years or three though.
Electronics supply places certainly will have generic
holders for AA batteries, all you need then is the plug
which is the same as on PC speakers. That is, the ones
with four holes and not the two hole ones which were used
on some XTs. You can rip similar ones out of old computer
boxes. If you want to go even simpler, try the next
suggestion.
If you have a soldering iron, it is quick to solder
together 4 cells, thus avoiding the little holder all
together. (This is almost certainly quicker than having to
leave the house to buy one.) Again, you need the plug too,
but you could put the wires on the MB pins in the same way
as wire wrap. The whole four batteries can be held
together with tape and placed or taped inside the box. I
typically use a glue gun for these kinds of tasks, as it
is reasonably neat and can be peeled off in the future.
> Will a flat torchbattery (3R12 or something like that) do
> as a replacement for a 7,2 v in a Deskpro286?
Sorry, I don't have a catalogue handy for the specs on
that one. The important thing is the voltage range,
anything else about the battery is a finer point and a
matter of long term servicability and convenience. If the
battery you mention is in the 4 to 7.5 volt range, then
you will be OK. This may actually be your easiest
solution. I seem to remember seeing a flat battery in
Europe which was roughly the size and voltage of 4 AA
battries. Around here we rarely get flat batteries other
than the 9v variety, so that is probably why we use the
slightly more complicated solution of 4 seperate cells.
> I am a bit short of time, so I would prefer good advice
> rather than testing different solutions.
These solutions will work just fine. It is just a matter
of whether you find them aesthetically acceptable or not.
To sum up. It is just a matter of getting some voltage
in the vaguely correct range onto the right pins. The rest
is a matter of convenience.
Cheers,
Ole Juul
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