Henry Kolesnik wrote:
Divide and conquer. Rig a deep cycle for the control and leave the regular
battery for starting. Everytime a regula r car battery is fully discharged
it loses a significant portion of its life and after 10 or 20 of these it's
worhtlessfor starting but a deep cycle is made to discharge totally hundreds
of times.
hank wd5jfr
"John" wrote in message
...


Even with deep cycle batteries, it is best never to fully discharge
them. The only difference in these batteries is an extra large gap
between the bottom of the plates and the casing bottom. This allows for
more charge cycles before the inevitable 'crud' (I dont know the
technical term) piles up on the bottom enough to short out the plates.

--
Luhan Monat, "LuhanKnows" At 'Yahoo' dot 'Com'
http://members.cox.net/berniekm
"The future is not what it used to be."