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Old 05-16-2014, 08:06 AM   #15
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Originally Posted by GaryKD View Post
Hi LPD218, With 12 VDC batteries connected in parallel, the connection from which battery does not matter.
Originally Posted by dsbear View Post
Laws of physics prevail here. It doesn't matter where the connection is made the current and voltage will be the same on each of the positive legs and each of the negative legs
Originally Posted by zdomain View Post
If you use high quality, heavy gauge cables with good solid connections, it won't matter.
Originally Posted by wa8yxm View Post
To both questions: NO, No problem and unless you have a whopping big inverter (Even if you do) no noticeable difference.
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Old 05-17-2014, 09:02 PM   #16
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As I understand this, "balancing" the charging load is the goal by connecting the cables to the end batteries. The drawn load, I agree, is not a problem with sufficient wire size.

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Old 05-18-2014, 09:17 AM   #17
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Originally Posted by Ray,IN View Post
As I understand this, "balancing" the charging load is the goal by connecting the cables to the end batteries. The drawn load, I agree, is not a problem with sufficient wire size.

I have 3 in parallel also, and I connected the positive--red wire-- to the first battery and the ground--black wire--to the 3rd battery. Then I was sure to have both the charge and draw load balanced. BTW, I used 0 gauge wire since I have a high power inverter, 5000watt pure sine wave, bit of over kill, but for $380 I could not pass it up.

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Old 05-18-2014, 10:47 PM   #18
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Having maintained commercial plants for many years it MAY OR MAY NOT make a difference.

If you have proper conductors and installation then you can connect your charge and load to any point.

Commercial parallel strings use a buss bar with each battery having a seperate wire and disconnect.

Units with conductors too small will make a difference and if connected with loads at opposite ends of the plant forces balanced drain and you will have voltage drops across the jumpers on high loads and possible confusion of a charger.

So first thing to do is make sure you have proper sized conductors as well as proper disconnects or short circuit protection as each battery adds about 1000 amps of current capacity or much more depending on type and size.

Battery plants can instantly weld your tools so be careful.

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