lifted club cars - lifted ezgo
Home FAQDonate Who's Online
Go Back   Buggies Gone Wild Golf Cart Forum > Golf Cart Repair and Troubleshooting > Electric Club Car
Electric Club Car Electric DS, and Precedent golf cars



Post New Thread  Reply
Thread Tools Display Modes
Unread 10-15-2013, 12:10 PM   #31
Gone Wild
 
Sergio's Avatar
Club Car
 
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 4,568
Default Re: Any chance this is NOT bad batteries?

If you are just wondering about the voltage rising after resting, the acid in the battery is prone to stratification, which means that the concentration of the acid could differ inside the battery.
Since the current is produced by the chemical reaction at the surface of the plates, a heavy current flow will quickly reduce the electrolyte on the surface of the plates to water. When that happens, the voltage and current will be reduced. It takes time for more acid to diffuse through the electrolyte and get to the plates' surface. A short rest period usually accomplishes this.
I guess the slow drop in amp-hour capacity is part of the normal aging process of the batteries and aside from abuse, it is normal, inevitable, and not reversible.
Have you done an equalize charge lately? it may help .
Sergio is offline   Reply With Quote
Alt Today
BGW

Golf car forum Sponsored Links

__________________
This advertising will not be shown in this way to registered members.
Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum
   
Unread 10-15-2013, 12:12 PM   #32
Gone Wild
 
Storm S's Avatar
Club Car
 
Join Date: Aug 2013
Location: PBG, Florida
Posts: 247
Default Re: Any chance this is NOT bad batteries?

Just for giggles I took all my cables off and wire wheeled them down as well as the batt terminals and put it all back together. Charger is currently running and will see if that changes anything. 2 year old batts should not be bad already.... Should they? I've had the cart for what? 2 months now and have lived by the park and plug method. The people I purchased it from said is sat for about 3 months without being touched at all when it stopped working. (for those who don't know the problem with that cart was the controller was fried.)
Storm S is offline   Reply With Quote
Unread 10-15-2013, 12:13 PM   #33
Gone Wild
 
Storm S's Avatar
Club Car
 
Join Date: Aug 2013
Location: PBG, Florida
Posts: 247
Default Re: Any chance this is NOT bad batteries?

Quote:
Originally Posted by Sergio View Post
If you are just wondering about the voltage rising after resting, the acid in the battery is prone to stratification, which means that the concentration of the acid could differ inside the battery.
Since the current is produced by the chemical reaction at the surface of the plates, a heavy current flow will quickly reduce the electrolyte on the surface of the plates to water. When that happens, the voltage and current will be reduced. It takes time for more acid to diffuse through the electrolyte and get to the plates' surface. A short rest period usually accomplishes this.
I guess the slow drop in amp-hour capacity is part of the normal aging process of the batteries and aside from abuse, it is normal, inevitable, and not reversible.
Have you done an equalize charge lately? it may help .
Equalize charge? Please do explain. I'll try anything. lol
Storm S is offline   Reply With Quote
Unread 10-15-2013, 12:21 PM   #34
Dazed & Confused
 
crash test dummy's Avatar
Club Car
 
Join Date: Nov 2011
Location: Z-HELLS FL
Posts: 14,029
Default Re: Any chance this is NOT bad batteries?

Quote:
Have you done an equalize charge lately? it may help .
Quote:
Individual readings showed 8.45 all the way across the board....
i would say the pack is equalized
crash test dummy is online now   Reply With Quote
Unread 10-15-2013, 12:25 PM   #35
Gone Wild
 
Sergio's Avatar
Club Car
 
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 4,568
Default Re: Any chance this is NOT bad batteries?

I am not sure if it works the same with your version of the OBC, but after a full charge and without moving the cart, just unplug the charger and plug back after 30secs. The OBC will sense that and initiate an equalize charge, which means will raise the voltage higher than normal and hold it there longer than a normal charge. It will help if the cells in your battery are not all the same SG.
I noticed in your signature you have 4 ga cables, just checking, the negative is still going thru the OBC, right?
Sergio is offline   Reply With Quote
Unread 10-15-2013, 12:32 PM   #36
Gone Wild
 
Sergio's Avatar
Club Car
 
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 4,568
Default Re: Any chance this is NOT bad batteries?

Quote:
Originally Posted by crash test dummy View Post
i would say the pack is equalized
Unfortunately with Batteries connected in series, You cannot equalize a pack that is "out of balance". The good batteries will overcharge because the weak ones cannot raise the voltage. His pack looks in balance so it should be effective.
Aside from using an individual bank charger (expensive), that is a potential problem with batteries in series. I built some passive voltage bypass devices for my batteries when I got my cart and noticed my pack was pretty out of balance, but at the end I just bought new batteries.
Sergio is offline   Reply With Quote
Unread 10-15-2013, 12:41 PM   #37
Gone Wild
 
Storm S's Avatar
Club Car
 
Join Date: Aug 2013
Location: PBG, Florida
Posts: 247
Default Re: Any chance this is NOT bad batteries?

Quote:
Originally Posted by Sergio View Post
I am not sure if it works the same with your version of the OBC, but after a full charge and without moving the cart, just unplug the charger and plug back after 30secs. The OBC will sense that and initiate an equalize charge, which means will raise the voltage higher than normal and hold it there longer than a normal charge. It will help if the cells in your battery are not all the same SG.
I noticed in your signature you have 4 ga cables, just checking, the negative is still going thru the OBC, right?
Yes 4 ga thru the obc as well.
Storm S is offline   Reply With Quote
Unread 10-15-2013, 01:13 PM   #38
Dazed & Confused
 
crash test dummy's Avatar
Club Car
 
Join Date: Nov 2011
Location: Z-HELLS FL
Posts: 14,029
Default Re: Any chance this is NOT bad batteries?

Quote:
Originally Posted by Storm S View Post
!

9:30 last night charger turned off. Pack voltage was 52.4 low for shut off volts
7:45 this morning pack voltage was 49.9 not 12 hours only 80%
Went on a ride......
After 2 miles pack voltage was 49.4 = 70%
After 5 miles pack voltage was 48.7 = 60%
The cart rested for about 20 mins while at the park.
When returned the pack voltage was 49.9 = 80%
After driving home with a total of 8.3 miles driven the pack voltage was 45.6 >10%dead batteries cart should of stopped
After a 35 min rest while feeding the baby breakfast the pack voltage went back up to 50.7 95%
crash test dummy is online now   Reply With Quote
Unread 10-15-2013, 01:16 PM   #39
Gone Wild
 
Storm S's Avatar
Club Car
 
Join Date: Aug 2013
Location: PBG, Florida
Posts: 247
Default Re: Any chance this is NOT bad batteries?

Quote:
Originally Posted by crash test dummy View Post
THATS MY POINT! lol
Storm S is offline   Reply With Quote
Unread 10-15-2013, 01:21 PM   #40
Dazed & Confused
 
crash test dummy's Avatar
Club Car
 
Join Date: Nov 2011
Location: Z-HELLS FL
Posts: 14,029
Default Re: Any chance this is NOT bad batteries?

anyway to barrow another meter to double check yours ?
do you live on a grave yard ? lol
crash test dummy is online now   Reply With Quote
Reply
Go Back   Buggies Gone Wild Golf Cart Forum > Golf Cart Repair and Troubleshooting > Electric Club Car


Thread Tools
Display Modes


Similar Threads
Thread Forum
What's the chance of this happening? Electric EZGO
Chance to buy Melex Melex
Finally got a chance to get it dirty.. Lifted Golf Carts
Chance at a G1 Gas Yamaha
New member with a chance to buy question Gas EZGO


All times are GMT -5. The time now is 09:05 PM.


Club Car Electric | EZGO Electric | Lifted Golf Carts | Gas EZGO | Used Golf Carts and Parts

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.