NAC battery question

[Chris Thorp]

On Dec 14, 2006, at 11:34 AM, Huw Powell wrote:

>
>>> A more typical 400 AH battery that is a couple of years old should
>>> still hold up for a third of that, say 8-16 hours...
>
>> Now take 8.25 amps out of a 40-70 amp-hour battery and you get a
>> running time of 5-8.5 hours.
>
>
> Anyway, aren't there going to be many vehicles there?  Anything wrong
> with jumping the "stereo" battery with a running car once in a while?
> Or rotating the stereo battery in and out of a car before it's too
> whacked to start the car?  Or using two batteries? etc. etc.
Or find a friend with an electric trawling motor and borrow his  
battery for the evening?  Or, if you've got reasonable oil pressure,  
just idle the car?

-Chris