Re: Re: Re: opinions on 8V batteries for 6v tracto

Posted by jdemaris on January 03, 2004 at 06:13:26 from (209.23.30.222):

In Reply to: Re: Re: opinions on 8V batteries for 6v tractor posted by RAB on January 02, 2004 at 23:45:16:

That's why I mentioned cranking voltage, not standing battery voltage. Cranking voltage will be determined by cranking demand versus available amperage from the battery (not counting for line-loss voltage drop). That's why, in some situations, a small 6 volt battery will only supply 4 volts at cranking whereas a large 6 volt battery might supply 5+ volts at cranking. The cranking voltage is what determines the cranking speed. It is also possible, as you alluded to, to buy an 8 volt battery to replace a 6 volt battery, and gain little to nothing as far as cranking voltage goes. That would be unusual though on a small engine tractor. As far a quality of batteries goes, I've bought bad batteries 40 years ago, and still get some bad ones today. It does seem, though, on the average, that six volts batteries greatly outlast twelve volt batteries - and I have no idea why. The 6 volt battery in my HG is seven years old, and the battery in my VAC is ten years old. With my 12 volt system equipment, it seems to be a rare occasion when a battery can make it to it's warranty target date. Especially the junk batteries I buy from NAPA (Exide I think).

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