On 31/01/18 09:31, Dave Liquorice wrote:
> On Tue, 30 Jan 2018 20:14:12 +0000, The Natural Philosopher wrote:
>
>>> 12V, 20Ah. say 5V 140Ah. 2 months is 60 x 24 hours = 1440 hours
>>
>> that should be 12V,  70Ah...
>
> That depends on the car. a little petrol "tin box on wheels" may only
> have a 30 - 40 Ah battery. 2.5 l diesel > 100 Ah...
>
>>> Its amazing what the Abilitry To Do Simple Sums can tell you when
> faced
>>> with handwavey statements like 'Keeping a pi running won't matter
> to a
>>> car battery.'
>
> Also car batteries detest being deep discharged. Just one deep cycle
> can significantly reduce their abilties, two or three is very likely
> to kill it.
>
Indeed. We have all found that out the hard way...


--
Those who want slavery should have the grace to name it by its proper
name. They must face the full meaning of that which they are advocating
or condoning; the full, exact, specific meaning of collectivism, of its
logical implications, of the principles upon which it is based, and of
the ultimate consequences to which these principles will lead. They must
face it, then decide whether this is what they want or not.

Ayn Rand.

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