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Unread 02-21-2014, 01:50 PM   #11
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Default Re: Opinion on batts

I hate
to say it, but based on age, I think it's time to pull the trigger on a new set. The money is better spent towards a fresh start.
As for the idea of going with a gas cart? From a hunting perspective I like the idea of staying quite. Just my opinion.... Best wishes to you and your project!
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Unread 02-21-2014, 10:42 PM   #12
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Default Re: Opinion on batts

Well...I couldn't located a good used one so I took a chance and bought a new one from SAMs for $100. Put it in and suddenly the voltage of all the other batts came back up to 8.49 volts each. Hope it works. If I can I'll replace a batt a month until I get them all replaced and spread the cost out.

Gumpbuck I don't think a gas buggy would be an issue with deer. People use ATVs all the time and the deer don't mind. At least they don't around where I hunt. I use my buggy to get me close to the stand, hide it in the brush, and walk the rest of the way to the stand anyway (about 200 yd).
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Unread 02-23-2014, 09:52 AM   #13
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Default Re: Opinion on batts

Quote:
Originally Posted by gumpbuck View Post
I hate
to say it, but based on age, I think it's time to pull the trigger on a new set. The money is better spent towards a fresh start.
As for the idea of going with a gas cart? From a hunting perspective I like the idea of staying quite. Just my opinion.... Best wishes to you and your project!
Gas carts have the odor of the fuel also. It will follow you on your clothes all they way into the stand.
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Unread 02-24-2014, 01:20 AM   #14
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Default Re: Opinion on batts

I have Sam's Energizer batteries dated 08/08. Thought they were going bad last year but found out problem was with my charger. I bought a DPI charger from Scotty and batteries have fully recovered. Hope to get 2-3 more years out of them.
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Unread 03-13-2014, 11:58 AM   #15
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Default Re: Opinion on batts

Quote:
Originally Posted by scottyb View Post
A SOC test done at any time will give a good comparison of the battery condition. A good hydrometer can be had at any auto parts store. (not the floating balls type through) What you are looking for is not only a 12.77 (at 80*F) but the difference between cells (not more than 20 points) and the difference between batteries within the pack.
Your voltage reading is only 80% - so if you have charged within 24 hours and not run the cart I'd say you need new batteries.
A good battery hydrometer is a good investment finding bad cells or batteries. I just mentioned hydrometer on another topic. It seems to be the general opinion here that you can't find bad batteries without a load tester and voltmeter.
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Unread 03-27-2014, 10:04 AM   #16
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Default Re: Opinion on batts

I just purchased my first battery powered cart and checked my batteries with the needle style hydrometer. I found a marginal cell in two of the four 12V batteries. Using the stock EXGO RXV charger I did an equalization charge by unplugging and plugging back in three or four times. All voltages leveled out really well but, one battery with a marginal cell now reads good and the other battery with a marginal cell reads bad.

I did another equalization charge last night and will check the cells again later today. Cart is a 2010 model and batteries are T-1260 originals.

Looks like my options are replace one battery with a bad cell or the whole lot based on age.

Any thoughts or recommendations are appreciated.
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Unread 03-27-2014, 10:22 AM   #17
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Default Re: Opinion on batts

Well, I think you know what's coming - 12v batteries at 4 years of age are a bit elderly - UNLESS they are really low mileage. I have recently made an offer on a 2007 Precedent - with 12v batteries. Not sure if I'll get it or not, but in any case (unlike the 2010) I will need to re-engineer the battery compartment for 8v batteries when they fail. Your in a better spot - 6 x 8v batteries will drop right into yours and are about the same price as replacing 4 x 12's.

If your just trying to squeeze some final life out of your pack, you might look at a recent post from Sergio - he rigged up some battery to battery circuitry that MIGHT help you integrate a new battery into an old pack. The summary is HERE. Its never really been tested though - this might be a good "experiment". Not a big investment in electronic parts and you may be able to test a theory he has developed.
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Unread 03-27-2014, 03:38 PM   #18
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Default Re: Opinion on batts

Quote:
Originally Posted by joesam View Post
Your in a better spot - 6 x 8v batteries will drop right into yours and are about the same price as replacing 4 x 12's.
Why would I want to replace 4x12v with 6x8V?
Quote:
Originally Posted by joesam View Post

If your just trying to squeeze some final life out of your pack, you might look at a recent post from Sergio - he rigged up some battery to battery circuitry that MIGHT help you integrate a new battery into an old pack. Not a big investment in electronic parts and you may be able to test a theory he has developed.
Yes I am depending on how much life that is. Understood most of this except where the passive voltage terminals connect to (and from) the new battery. Also what changes would need to be made to a 12v setup?
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Unread 03-27-2014, 07:59 PM   #19
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Default Re: Opinion on batts

I think you said you have a 2010 Precedent. If so - it was built with 8v batteries as an option to 12v. The twelves were a bad idea (long painful story for Club Car), and they changed the battery compartment in late 2008 to accomodate 8's. So you just have to buy two "different type" battery hold downs - a couple extra battery cables, and your good-to-go with 8's.

6 x 8v are a proven technology - they give you longer run times, and more importantly, much longer battery life (usually 25% or more, improved battery life).

Edit....oh yes - as I understand it the passive devices are run in parallel with the cables that connect the batteries - but not between the final + and - connections that go to the controller/motor. And your diode values would change because they are twelves. As to what value - we should wait for Sergio to calculate that.
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Unread 03-27-2014, 10:54 PM   #20
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Default Re: Opinion on batts

I mentioned earlier I have a 2010 EZgo but I am posting in the Club Car section so sorry for the confusion on the 4x12V versus 6x8V.
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