Sorry, no contradiction...

The alkaline batteries in the SM's. or for that matter, the lithium 
3.6's and others in most all machines including the infamous windoze 
carbuncles, expire after a while because of  the internal decomposition 
of the chemicals inside. Charging them, recharging them, makes no 
difference. When the chemicals (lithium, alkaline, lead-acid, etc.) poop 
out the battery should go to the dust bin.

The alkalime batteries used for the SM's were specifically designed to 
have the longest possible life curve at its specified voltage. There is 
no real drain on them, or more realistically, no much more than the 
natural life expectancy that has its own downward curve whether or not 
it's connected to anything.

Even if the computer is left on constantly, with an available 5v. 
hanging around all the time, the battery eventually fails. According to 
Mallory, it's 4.5v curve is useful for 3 to 5 years; what can I say? 
Talk to them.

Pressing the CUDA switch simply resets the PRAM settings from an 
internal ROM and takes you back to a factory "fresh" instruction 
condition. If the machine is again unplugged or meets a power failure, 
the old battery can't maintain the PRAM and you'll get a new batch of 
perhaps goofy symptoms--including no start-up. I  have pulled out the 
battery and run my SM fine for weeks untilI pulled out the plug. About 5 
or 10 minutes later, as I understand it, the PRAM gets wiped out and I 
was able to start it again after plugging the beast in.

I opine that voltage is necessary to "power up" so it doesn't matter if 
the PRAM reset is initiated from a battery or the power supply. One of 
my machines now runs on 3 AA batteries solder-wired in series to give 
the machine 4.5 volts because I could't get a regular replacement in the 
middle of nowhere.

My advice and comments stay the same. After 3 or 4 years, you need a new 
battery. If you keep the SM plugged in,the SM can work, but it's not a 
matter of if it will fail, just a matter of when.

Also please note, PRAM corruption can occur for many reasons besides the 
battery voltage. It's much more likely however that a low battery 
voltage introduces its own more frequent corruptions.

Bob Wulkowicz

jrclark wrote:

>Contradiction
>See Motorola site  
>http://mcg.motorola.com/cfm/templates/starmax.cfm?PageID=607
>
>Battery Basics
>



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