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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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03-24-2009, 11:46 AM | #1 |
Gone Wild
Join Date: Aug 2008
Location: Pine Mtn,Ga
Posts: 230
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new battery question
just bought a set of new batts(feb 09) and was wondering do i need to charge them prior to use, or do i need to run them down a good bit before charging, or do you just go about using them in the normal manner?? thanks k
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03-24-2009, 11:49 AM | #2 |
steeplejack x
Join Date: Jan 2007
Location: Republic of Texas
Posts: 3,382
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Re: new battery question
ALWAYS charge before use! Full charge may take some time on a new pack.
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03-24-2009, 12:48 PM | #3 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,356
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Re: new battery question
Use a voltmeter and learn where 50% discharge is. Read the discharge chart in the stickies. It's your money, make it last
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03-24-2009, 04:37 PM | #4 |
Gone Wild
Join Date: Aug 2008
Location: Pine Mtn,Ga
Posts: 230
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Re: new battery question
what do you mean 50% discharge, scotty? are you saying i need to run them at least 50% dead before charging? pg groove, i will charge completely before use, i have an timer charger, any idea on hjow many cycles i will have to do? thanks
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03-24-2009, 05:03 PM | #5 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,356
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Re: new battery question
Not 50% dead!!!? 50% empty ..... I am going to assume you have a 36v system. 100% charge is 38.20 volts. 50% = 36.31 volts A 36 volt pack is considered EMPTY at 50% drain or 36.31v. The pack should never be drawn down lower than this. Doing so can perminently damage and shorten the useable life of the batteries you just paid SO MUCH $$$ for. Do you have a voltmeter? I wouldn't draw them down below 60 - 70% for the first 10-12 cycles...
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03-24-2009, 05:13 PM | #6 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,356
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Re: new battery question
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03-24-2009, 05:24 PM | #7 | |
steeplejack x
Join Date: Jan 2007
Location: Republic of Texas
Posts: 3,382
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Re: new battery question
Quote:
Most likely, just turn the timer to start and let it go until it shuts off. Most, NOT ALL, timer models will shut off automatically at full charge or 12 hours whichever comes first. |
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03-25-2009, 07:27 AM | #8 |
Gone Wild
Join Date: Aug 2008
Location: Pine Mtn,Ga
Posts: 230
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Re: new battery question
mine has the turn dial(12 hrs) than also has an amp input meter i believe it is, thanks for the info, i charged them last night and will take a reading when i get home this afternoon with my fluke, will post results, thought that they could go less than 36 though, man i am learning alot, and yes i did pay some $$ that i didnt want to, but others were just gone, tried the 3 12 dep cycle for troubleshooting purps, then once i got it all rewired and running as it should, had to bite the bullet and buy 6 6's, also my boat was getting lonely without the batts and all so close to boating season!! thanks for all the help so far, keep the suggestions coming, also wanting to do a lift on it, its a 91, any suggestions!! thinking of building my own, may just be as simple to just but one.. any help is appreciated!! k
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03-25-2009, 05:03 PM | #9 |
Gone Wild
Join Date: Aug 2008
Location: Pine Mtn,Ga
Posts: 230
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Re: new battery question
checked the new ones, read 39.05, checked an older set in my other cart(have been run for a day or so) and they read 37.04....... guess both sets are ok?
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03-25-2009, 05:16 PM | #10 | |
steeplejack x
Join Date: Jan 2007
Location: Republic of Texas
Posts: 3,382
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Re: new battery question
Quote:
Assuming both are open circuit readings and the new set is a few hours off a full charge cycle then, 39.05v = OK 37.04v = charge immediately |
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