Quote:
Originally Posted by paulgato
So, is one rear donor battery enough, or do I add a second Yuasa battery in parallel?...
I know that if I ever feel the battery charge is getting low, and especially if it is dark and rainy and horrible out there, I can get a little nervous, and that means I am liable to speed up a bit so as to get home before the voltage drops too low.
If anyone has any advice or ideas on this I'd be glad to hear...
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Since you have a self-exciting alternator, I wouldn't bother expanding your battery capacity. If you get nervous about getting low on charge, or you go on an extended trip, just engage the alternator.
I'm no expert on DC->DC converters, but it seems like running 14v from the converter would have the effect of trying to charge your starter battery. A lead acid battery at near full charge is only 50% efficient at accepting a charge. The same goes for discharge.