Am 05.08.2005 um 23:03 Uhr schrieb Doug McNutt:

At 23:23 +0100 8/3/05, aedan mcghie (list) wrote:
On Aug 03, 2005, at 2316, Dr.O.M.Betz wrote:

3. the 4.5V alkaline velcroed "brick" Rayovac 640 with a cable and plug connection notorious from the 630 and the related PPCs. Extremely expensive but still obtainable today. And to make this on- topic, the 575 through 578CD (and 5200 through 5400) used it as well... Need I to say I still recommend MacTracker?

I have some machines in the garage which need this expensive lump. Would it be OK to solder 3 cheap 1.5 V cells together and attach the cable from the old busted Rayovac?

I once wrote a blurb about creating 4.5 volt "lumps" from 9 V "standard" batteries.

<http://www.macnauchtan.com/pub/MacBattery/MacBattery.html>

There is also:
<http://www.MacBattery.com/>
with whom I have no relationship other than, perhaps, a Scottish ancestry.

Doug, where did you get this cylinder-element 9V batt from? Brand? All the ones I sectioned so far were the "rounded-corner rectangular plate" type. Sadly I don't have an X-ray machine at home... and the plates would be tricky to solder, I'm sure. A diy 4.5V replacement battery would be cheap and built-to-need, i.e. fresh, and usable both for the Plus (and predecessors) and the 630 and his more powerful collegues as well as for the on-topic 5xx AIOs.

MacBattery.com is a disappointment. A search for the Plus leads nowhere, the Eveready 523 yields no hits either.

Are the listers that had reported about putting 1.5V alkalines in series a couple of years ago still listening? I wasn't lucky in the LEM archives, but maybe that's just me. I'd be specially interested in feedback from the guy who said a threesome 1.5V AAA killed his Plus's mainboard.

BTW: I'll be away from my mail for a fortnight now, so please be patient with my answers. Denmark awaits me, in a little house by the belt, no telephone, no Internet connection. An option.

Cheers, OM

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