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07-19-2010, 03:33 PM
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#41
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Senior Member
Join Date: Mar 2007
Location: mesa, az
Posts: 1,375
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i gotta respectfully disagree with batteries plus.
there is a reason those big 8D's are rated at such high cold cranking amps. that is to turn over our big starters.
putting a light bulb on it to load test it is nuts. an 8D with several bad cells will still test ok with a 50 amp load let alone with a 60 watt light bulb which is 5 amps at 12 volts.
if you research it, you will find that you have to test an 8D with a load that is close to equivalent to the load put on it by starting it. that means 600-800 amps. there are carbon pile load testers that will test that.
i bought my starter batteries at sams club and they could test them and my agm batteries for my coach side at interestate batteries and they could test them.
just my two cents worth. and you get what you pay for.
btw, there is a reason there are 2-0 or 4-0 battery cables on our rigs. current draw.....
tom
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07-19-2010, 11:31 PM
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#42
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Senior Member
Join Date: Apr 2009
Location: Missoula, Montana and Montpelier, VT
Posts: 100
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Tom, these batteries are not 8D's. They are way bigger than that. These batteries are at least 20 inches high and 12-14 inches long. I think I described their specs at the beginning of this thread. And, I agree with you. Jennifer
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[SIGPIC][/SIGPIC]Jennifer Stackpole
1987 Newell, 40ft #143
DD 8V92 Silver
2010 Cannondale Tandem
No Name Tandem Mtn Bike
1973 Triumph GT6
2012 AWD 4-door Mini-Cooper
3 Ford Trucks
Just another fanatical motorhead
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07-19-2010, 11:38 PM
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#43
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Senior Member
Join Date: Mar 2007
Location: mesa, az
Posts: 1,375
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the 8D batteries that most of us have i believe are the biggest batteries that you can get. they weigh about 170 pounds are are huge.
no matter what batteries you have, they are meant to take a severe current load so i think my comments are still valid on the load testing.
tom
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07-19-2010, 11:48 PM
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#44
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Senior Member
Join Date: Apr 2009
Location: Missoula, Montana and Montpelier, VT
Posts: 100
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Tom, I have 8D's for my starters and these are a lot bigger in size, as in taller. Whatever they are, I agree with you. I tested them today with my hydrometer and they tested in the white and not in the green where they should. I will test them again after being plugged in for 3 days.
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__________________
[SIGPIC][/SIGPIC]Jennifer Stackpole
1987 Newell, 40ft #143
DD 8V92 Silver
2010 Cannondale Tandem
No Name Tandem Mtn Bike
1973 Triumph GT6
2012 AWD 4-door Mini-Cooper
3 Ford Trucks
Just another fanatical motorhead
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