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 05-23-2011, 01:12 PM   #1
Getting Wild
 
ajbrown's Avatar
Club Car
 
Join Date: Dec 2009
Location: The Villages, FL
Posts: 144
Default Measure state of charge (discharge)

I am interested which voltage should be used as a guideline to determine the battery pack's state of charge? Do I use the number measured immediately following a ride or should I use the number after the battery has recovered?

As an example, the other day I drove my cart for 31 miles. At the end of the trip I measured the voltage of the pack and it was 48.6.

I then let the battery pack "recover" allowing it to rest for 45 minutes. The voltage now had climbed to 49.5.

According to the charts one is about 55% and the latter is about 70%. Which should I use as a guideline to ensure I never discharge the pack more than 50%?

Thanks for any insight,
Alan
ajbrown 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 05-23-2011, 02:14 PM   #2
Gone Wild
 
dougmcp's Avatar
 
Join Date: Mar 2009
Location: Roseville, CA
Posts: 2,757
Default Re: Measure state of charge (discharge)

Use the rested number after the pack recovers from being discharged.
It's the same after charging, you need them to rest to get a true state of charge.
dougmcp is offline   Reply With Quote
Unread 05-23-2011, 07:19 PM   #3
Getting Wild
 
ajbrown's Avatar
Club Car
 
Join Date: Dec 2009
Location: The Villages, FL
Posts: 144
Default Re: Measure state of charge (discharge)

Quote:
Originally Posted by dougmcp View Post
Use the rested number after the pack recovers from being discharged.
It's the same after charging, you need them to rest to get a true state of charge.
Thanks, I was never quite sure of that from reading other threads. Sounds like in my example below I had some run time left to get to 50%.....
ajbrown is offline   Reply With Quote
Unread 05-23-2011, 07:33 PM   #4
Stay thirsty my friends!
 
gornoman's Avatar
Mixed Breed
 
Join Date: Jan 2007
Location: Suburban Chicago
Posts: 25,020
Default Re: Measure state of charge (discharge)

You're doing real well to get 31 miles. That's great!
gornoman is offline   Reply With Quote
Unread 05-24-2011, 05:43 AM   #5
Getting Wild
 
ajbrown's Avatar
Club Car
 
Join Date: Dec 2009
Location: The Villages, FL
Posts: 144
Default Re: Measure state of charge (discharge)

The reason I am asking this is I am trying to get a handle on how far my carts will go before hitting an SOC of 80%, 50%, etc. That cart I drove 31 mile in a previous post was my Dad's cart, not one of mine. We have two Club Cars which can share the load to extend battery life.

One has a pack that is 3 years old, 6 - 8 volt Trojan T875 batteries. It will go about 25 miles to get the pack to 48 volts.

The second has 8 - 6 volt Trojan T105 batteries installed in March 2010. The other day as a test I went just over 50 miles and the voltage measured as soon as I stopped was 48.1. I did not watch to see how the voltage recovered.

My gut feel is that batteries recover about .5 - .7 volts after resting an hour, so based on what I am reading a no load voltage of 47.8 measured as soon as load removed is about 50% SOC as it should recover to 48.4.
ajbrown is offline   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
State of Charge? Electric Club Car
Getting state of charge on a CC Precedent Electric Club Car
State of Charge Electric Club Car
state of charge meter????? Electric EZGO
charge/discharge problem Electric EZGO


All times are GMT -5. The time now is 12:56 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.