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03-08-2010, 09:58 PM | #1 |
Not Yet Wild
Join Date: Feb 2010
Location: new market maryland
Posts: 68
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a few battery questions
hey guys i have a 48 volt cushman commander 2100.I have a few questions regarding the batteries.what should the volt reading be just after charging?How low in voltage can I go before recharging?What is your feelings about the bubbling or boiling of the batteries during the charging?I was told 2 different things about that.Some one said it was bad. someone said it is actually good because it moves the electolytes around and gets it off the bottom of battery giving it a more even charge.Thanks for you help Mike
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03-08-2010, 10:27 PM | #2 |
Gone Wild
Join Date: Mar 2009
Location: Roseville, CA
Posts: 2,757
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Re: a few battery questions
Near the end of the charge cycle each 6v battery should be charging about 7.7v, an 8v battery 10.3v after charging and resting for an hour or more the 6v battery should be 6.4v and the 8v should be 8.5v. Total pack voltage after charge and rest for 48v should be 50.96v
In non-scientific terms, as a battery declines in charge the lead sulfate increases and the lead and acid declines and some lead sulfate settles to the bottom. Charging boils the battery and causes the electrolyte to mix and re-energize the plates, restoring the charge. |
03-08-2010, 10:37 PM | #3 |
Not Yet Wild
Join Date: Feb 2010
Location: new market maryland
Posts: 68
|
Re: a few battery questions
Thanks doug so basically it is supposed to boil .during the charge.I know my batteries are old 2004.They are close 6.3 Will using epsom salt to desulfate help? thanks Mike
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03-08-2010, 10:43 PM | #4 |
Not Yet Wild
Join Date: Feb 2010
Posts: 19
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Re: a few battery questions
State of Charge_____12 Volt battery_____Volts per Cell
100% --------------------12.7-----------------2.12 90% ---------------------12.5-----------------2.08 80%----------------------12.42----------------2.07 70%----------------------12.32----------------2.05 60%----------------------12.20----------------2.03 50%----------------------12.06----------------2.01 40%----------------------11.9-----------------1.98 30%----------------------11.75----------------1.96 20%----------------------11.58----------------1.93 10%----------------------11.31----------------1.89 0 10.5 1.75 I tend to bring my 48 volt pack up to 56-58 volts for a full charge (this is the voltage while still charging, once a week or so I bring it up to 60 volts to get them equalized, when I unplug the charger the voltage tends to drop down to the 51-52 volt range until I turn the key. |
03-08-2010, 11:03 PM | #5 | |
Gone Wild
Join Date: Mar 2009
Location: Roseville, CA
Posts: 2,757
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Re: a few battery questions
Quote:
The epsom salt thing has been beat to death here and there's lots of posts on it. IMO, it works on some but not many, basically a waste of time. Run your batteries for another year and start saving for the new set. |
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03-08-2010, 11:08 PM | #6 |
Not Yet Wild
Join Date: Feb 2010
Location: new market maryland
Posts: 68
|
Re: a few battery questions
Thanks doug By the way I check out your cart is very nice not one you see everyday. looks like one for the 70's. Mike
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03-09-2010, 09:09 PM | #7 |
Not Yet Wild
Join Date: Feb 2010
Location: new market maryland
Posts: 68
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Re: a few battery questions
is it possible to use 6- 8 volt batteries rather than using 8- 6 volt ones.
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03-10-2010, 09:30 AM | #8 |
Gone Wild
Join Date: Mar 2009
Location: Roseville, CA
Posts: 2,757
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Re: a few battery questions
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