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10-10-2013, 01:11 PM | #1 |
Not Yet Wild
Join Date: Nov 2010
Location: whitley city ky
Posts: 30
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Mixed batteries 6v and 12v
I am working on a 2001 txt series cart 36v it has 4 6 volt batteries and 1 12 volt battery in it is there anything wrong with running it this way it charges to 37.4 volts when charged but doesn't last long could the mismatch be the problem going to test individual batteries tonight. Any thoughts?
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10-10-2013, 01:21 PM | #2 |
Guest
Posts: n/a
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Re: Mixed batteries 6v and 12v
your 12v battery is drawing down the others ...
your pack voltage at 37.4v is only 80% charged replace with 2~6v batteries |
10-10-2013, 01:29 PM | #3 |
Not Yet Wild
Join Date: Nov 2010
Location: whitley city ky
Posts: 30
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Re: Mixed batteries 6v and 12v
Thanks CTD I thought it might have something to do with it.
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10-12-2013, 05:11 AM | #4 |
Gone Wild
Join Date: May 2009
Location: Marietta, GA (USA)
Posts: 368
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Re: Mixed batteries 6v and 12v
Mixing batteries of different capacities in a series circuit is always a bad idea. They will discharge, and charge, at different rates, so would need to be charged separately to reach full charge. You also run the risk of over-discharging the lower-capacity battery (in this case, the 12V)..
..a |
10-12-2013, 08:50 AM | #5 |
Gone Wild
Join Date: May 2012
Location: Rio Verde, Az
Posts: 7,125
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Re: Mixed batteries 6v and 12v
You did not state the capacities of the 6V and 12V batteries but if they are different then you will have problems. The lower capacity battey will be over charged / discharged and the higher capacity battery may never get fully charged. Battery life will suffer greatly. Charging and Discharging batteries in series requires that they all be fairly equal in capacity and charge characteristics. (Same age and capacity!)
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09-23-2019, 01:00 PM | #6 | |
Not Yet Wild
Join Date: Jun 2018
Posts: 9
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Re: Mixed batteries 6v and 12v
Quote:
hope this helps some. OH!!! keep water in those batteries!!! |
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09-23-2019, 01:26 PM | #7 |
Not Yet Wild
Join Date: Jun 2018
Posts: 9
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Re: Mixed batteries 6v and 12v
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09-23-2019, 01:35 PM | #8 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,358
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Re: Mixed batteries 6v and 12v
Here is a charge chart to help with the state of charge percentage stuff.
Basically you cannot mix battery voltages ( like 6 and 12 ) within a pack because the charger gives the same charge to every battery in the pack. 6v and 12v have different amperage & voltage capacity which equals different charge needs. |
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