In message <[email protected]>, "N.J. Mann" writes:
>In message <[email protected]>,
> Philip ([email protected]) wrote:
>>
>> I want to power my net5501 from a spare 12V car battery that I have.
>
>You want a 'Deep cycle battery' not a 'Starting battery'. See
>
>http://en.wikipedia.org/wiki/Lead-acid_battery
>
>If you use a 'Starting Battery' it will not last very long.
Actually, if charged *correctly*, it is likely ti last significantly
longer than the deep-cycle battery.
But you have to deal with all the hydrogen, refill water etc etc.
BTW: I can highly recommend surfing the archived papers of the
"Stationary Battery Conference":
http://www.battcon.com/ArchivePapers.htm
It gives a much clearer idea of what is actual science and what
is just handwaving. Surprising amounts of the latter...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
[email protected] | TCP/IP since RFC 956
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Never attribute to malice what can adequately be explained by incompetence.
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