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Old 02-25-2012, 09:49 PM   #1
beach cart
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Default 48v pack 2 Batteries not fully charged

I have 8 Deka gc 45 batteries in my pack, they are 2 months old. 21 charges and discharges to no more then 75%, I have a new DPI charger, I have noticed that after the pack fully charges and sits till morning latley the 2 batteries that are used for the 12 volt accessories are not as fully charged as others. I just read the pack while in the float charge mode, 6 batteries read 7.4 the 2 for the 12v access. are 6.4. Once the pack sits from time to time can I charge just these 2 batteries with a 12 charger (harbor freight) until fully charged and should I charge them on a float or regular charge to 100%. Sorry this is so long! CAN I CHARGE WITH ALL CONNECTIONS MADE AND RUN/TOW SWITCH OFF. Any help on this would be appreciated
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Old 02-25-2012, 09:58 PM   #2
craig tn
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Default Re: 48v pack 2 Batteries not fully charged

You can charge the 2 batteries with all connected. I would recommend getting a 48 volt to 12 volt reducer. Those 2 batteries will have a shortened life compared to the other 6.
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Old 02-25-2012, 10:08 PM   #3
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Default Re: 48v pack 2 Batteries not fully charged

Will the connect to main terminals + and - and is will this help keeping the whole pack fully charged, by the way thanks.
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Old 02-25-2012, 10:09 PM   #4
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Default Re: 48v pack 2 Batteries not fully charged

Will this connect to main terminals + and - and is will this help keeping the whole pack fully charged, by the way thanks.
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Old 02-26-2012, 03:27 AM   #5
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Default Re: 48v pack 2 Batteries not fully charged

Quote:
Originally Posted by beach cart View Post
I have 8 Deka gc 45 batteries in my pack, they are 2 months old. 21 charges and discharges to no more then 75%, I have a new DPI charger, I have noticed that after the pack fully charges and sits till morning latley the 2 batteries that are used for the 12 volt accessories are not as fully charged as others. I just read the pack while in the float charge mode, 6 batteries read 7.4 the 2 for the 12v access. are 6.4. Once the pack sits from time to time can I charge just these 2 batteries with a 12 charger (harbor freight) until fully charged and should I charge them on a float or regular charge to 100%. Sorry this is so long! CAN I CHARGE WITH ALL CONNECTIONS MADE AND RUN/TOW SWITCH OFF. Any help on this would be appreciated
How big are your accessories and can you turn them off? Do you have a 12/120 volt inverter? 1 volt differential seems like a lot for just lights, stereo, etc.
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Old 03-01-2012, 09:35 PM   #6
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Default Re: 48v pack 2 Batteries not fully charged

I have checked the pack voltage after full charge and rest and there is only a .1 difference 6 batteries 6.1 the 2 for 12 volt 6.1
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Old 03-01-2012, 11:21 PM   #7
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Default Re: 48v pack 2 Batteries not fully charged

..... this is a bad situation for all the batteries, not just the 2 low ones.... 6 batteries are getting over charged waiting for the 2 low batteries to come up
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Old 03-02-2012, 06:41 AM   #8
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Default Re: 48v pack 2 Batteries not fully charged

What is the best solution to cure this problem Scotty. I can just charge these 2 every once in awhile or what do what.
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