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Author Topic: Best way to wire a battery bank  (Read 1787 times)
clivejo
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« on: September 18, 2012, 12:03:25 PM »

I have a number of 6v batteries I want to build into a battery bank of 48V.  Obviously, I need to wire 8 x 6V batteries in series to make 48V.  But would it be better to wire each 6v battery in parallel to more 6v batteries, I have enough for 4 X 6v in parallel.   

See example



* Bank.jpg (65.63 KB, 1130x1062 - viewed 490 times.)
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biff
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« Reply #1 on: September 18, 2012, 12:26:23 PM »

Clive,
      If you do a search here on Navitron you will find the right way to do this,It is not quite as straightforward as you would think.
                                                           Biff
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A.L.
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« Reply #2 on: September 18, 2012, 02:18:57 PM »

hello,

have a look at this - www.smartgauge.co.uk/batt_con.html
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johnrae
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« Reply #3 on: September 18, 2012, 04:45:41 PM »

I would suggest you wire your 6 volt units in series to create a 48 volt string, then connect 4 strings of 48 volts in parallel.  There is no need for cross connecting individual 6 volt units; in fact it might be a disadvantage since you would lose the ability to balance string currents and if a battery went "bad" you'd have a hard job identifying which.

With the 4 strings arranged vertically, connect the strings to your load/charger system as shown in the smartgauge website
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Justme
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« Reply #4 on: September 18, 2012, 04:47:47 PM »

Treat each 6v bat as a cell.

So you then need 8 "cells" in series to make your 4 x 48v batteries.

Then parallel the 4 x 48v bats as per normal following the method on the SG link.

Do not cross link each "cell" across each bat.
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knighty
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« Reply #5 on: September 18, 2012, 04:56:29 PM »

quick and dirty edit...



4 packs of 48v

but don't just join them all together at the end... have a separate point where you take your power away from, and keepo each wire from that point to that series of cells the same length

:-)
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clivejo
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« Reply #6 on: September 18, 2012, 10:10:12 PM »

quick and dirty edit...



4 packs of 48v

but don't just join them all together at the end... have a separate point where you take your power away from, and keepo each wire from that point to that series of cells the same length

:-)

awwww man, you ruined my pretty picture! 
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JohnS
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« Reply #7 on: September 18, 2012, 10:43:27 PM »

Better to ruin the picture than the batteries.
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guydewdney
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« Reply #8 on: September 18, 2012, 11:18:59 PM »

in a similar vein - is there any better way to connect 4 x 12v batteries as 24v output?
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knighty
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« Reply #9 on: September 19, 2012, 01:36:38 AM »

in a similar vein - is there any better way to connect 4 x 12v batteries as 24v output?

nope not really


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