AIUI he already has several standard car batteries available.
>
> I would be tempted to set up three of them with a diode arrangement, and
> some form of timer that is run from the first one, operates a relay to tu=
rn
> the second one on after 24 hours, which won't back feed the first one
> because of the diodes, and then after another 24 hours turn on the third
> one which won't back feed the first two because they have diodes. That
> should just about get you through the four days if you can find some
> suitable latching relays so you don't need continuous coil current.
> --



Curious - Why?
If you already have multiples and you already have backfeed diodes, why add
a layer of time division? How would this be better than just tying them all
to the load with the backfeed diodes?

-Denny
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