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Topic ClosedPlatform for dual batteries?
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furpod View Drop Down
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Joined: 25 Jul 2011
Location: Central KY
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Posts: 6128 		Direct Link To This Post Topic: Platform for dual batteries?
    Posted: 27 Jun 2013 at 4:04pm
OK, so after 6 hours disconnected, both batteries are bouncing between 13.39 and 13.40. So they are no more than .005v difference in capacity. They have been wired this way for exactly 24 months, and came off the pallet new, side by side. Our Pod is almost always plugged in when home.

I couldn't get pictures, because the craftsman has probes and not clips.. sorry, forgot that was one of the reasons I got the Fluke.

Also, plugging the pod back in, and turning the battery switch back to "on", both batteries showed 13.70 solid. So they are, for our purposes, charging at the same rate.
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CharlieM View Drop Down
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Posts: 1797 		Direct Link To This Post Posted: 27 Jun 2013 at 4:14pm
Originally posted by furpod

OK, so after 6 hours disconnected, both batteries are bouncing between 13.39 and 13.40. So they are no more than .005v difference in capacity. They have been wired this way for exactly 24 months, and came off the pallet new, side by side. Our Pod is almost always plugged in when home.

I couldn't get pictures, because the craftsman has probes and not clips.. sorry, forgot that was one of the reasons I got the Fluke.

Also, plugging the pod back in, and turning the battery switch back to "on", both batteries showed 13.70 solid. So they are, for our purposes, charging at the same rate.


You won't be able to measure the difference with a voltmeter under light loading. The difference will be in the current supplied to or taken from each battery. Even then the difference will only be observable during heavy charging or discharging. The difference we are talking about here is minimal with two batteries close, wired with heavy wire, and lightly loaded. That said, there is a right way and a not-so-right way. Why not do it right?  However, don't lose much sleep over this and don't let it interfere with happy hour. Big smile
Charlie
Northern Colorado
OLD: 2013 RP-172, 2010 Honda Pilot 3.5L 4WD
PRESENT: 2014 Camplite 21RBS, 2013 Supercharged Tacoma 4L V6 4WD
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furpod View Drop Down
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Joined: 25 Jul 2011
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Posts: 6128 		Direct Link To This Post Posted: 27 Jun 2013 at 5:04pm
Originally posted by CharlieM


You won't be able to measure the difference with a voltmeter under light loading. The difference will be in the current supplied to or taken from each battery. Even then the difference will only be observable during heavy charging or discharging. The difference we are talking about here is minimal with two batteries close, wired with heavy wire, and lightly loaded. That said, there is a right way and a not-so-right way. Why not do it right?  However, don't lose much sleep over this and don't let it interfere with happy hour. Big smile


never mind. not worth it.
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