lifted club cars - lifted ezgo
Home FAQDonate Who's Online
Go Back   Buggies Gone Wild Golf Cart Forum > Golf Cart Repair and Troubleshooting > Electric EZGO
Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV.



Post New Thread  Reply
 
Thread Tools Display Modes
Old 11-29-2014, 09:38 AM   #1
bigstik40
Gone Wild
 
bigstik40's Avatar
Yamaha
 
Join Date: Sep 2010
Location: Erie, Pennsylvania
Posts: 989
Default Finishing voltage from Powerwise 28115-G01

I am using an older Powerwise 28115-G01 charger (36 V.) on my 1 1/2 yr old Trojan T-105's. The charger is operating properly, except to me, the finishing voltage always seemed a little high. Nothing has changed since I started using this charger so it is operating the same now as when I first started using it. I recently recorded the finishing voltages and the charging currents for a full charge (batteries were at approx. 90% SOC) and here's what I got over approx. a 6 hr. period:

First check (1/2 hr in) V =42.5 I = 16 A.
2nd check (2 hr in ) V =44.5 I = 6 A.
3rd check (4 hr in V = 45.6 I = 1.5A
Final check (6 hr aprx)V = 46.1 I = 1 A

Does the 46.1 Volts seem high for a finishing charge ? Does the 6 hr charge for 90% SOC bats. seem long? I know Trojan calls for 46.5 V for equalize so it's getting close to that. Any help would be appreciated. Thanks - Ray

Last edited by bigstik40; 11-29-2014 at 09:39 AM.. Reason: clarify
bigstik40 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
   
Old 11-29-2014, 10:55 AM   #2
JohnnieB
Techno-Nerd
 
JohnnieB's Avatar
E-Z-GO
 
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
Default Re: Finishing voltage from Powerwise 28115-G01

The 46.1V does seem a smidgen high, but not hurt your batteries high.

The charger is eventually shutting off, isn't it? (6 hours does seem a bit long from 90% SoC)

I take it you are measuring the voltage that the main + & - terminals on the battery pack.
The charger is looking at the outside of the negative radsok in the carts charge receptacle, so it might not be seeing the same voltage.

To measure what the control board in the charger sees, you have open the charger and measure the voltage on the red and black wires going to the control board.

Cleaning the outside of the negative radsok in the charge receptacle and the auxiliary contact in the charger plug might lower the pack voltage the charger shuts off at.
JohnnieB is offline   Reply With Quote
Old 11-29-2014, 01:02 PM   #3
bigstik40
Gone Wild
 
bigstik40's Avatar
Yamaha
 
Join Date: Sep 2010
Location: Erie, Pennsylvania
Posts: 989
Default Re: Finishing voltage from Powerwise 28115-G01

Thanks for the "comeback", Johnnieb. Voltage is from my SOC meter and represents voltage at the pack + and -. Actually, I'm not using the 3rd wire in the charge cable and the board is seeing voltage inside the charger. I think sensing at the negative radsock will actually cause a small increase in the finish voltage (right?). The charger has always shut off by itself, so that part is working (I think). Maybe I should just spring for a new board and call it a day. BTW, Do you know what the shutoff voltage range for these chargers should be ? - Thanks - Ray
bigstik40 is offline   Reply With Quote
Old 11-29-2014, 02:21 PM   #4
JohnnieB
Techno-Nerd
 
JohnnieB's Avatar
E-Z-GO
 
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
Default Re: Finishing voltage from Powerwise 28115-G01

It would be better to spring for a DPI Accusense charger.

It float charges, solving the storage issues.

--------
The typical shutoff voltage is in the 44V to 46V range, but 46.1V is fine.
I wouldn't have said anything except I thought you might be getting some tarnish on the radsok, which would only get worse. Since you are sensing the battery voltage inside the charger, 46.1V may be normal.

Just check the shutoff voltage occasionally. If it starts climbing above 47V, it is time to fix/replace the charger.
JohnnieB is offline   Reply With Quote
Old 11-29-2014, 03:09 PM   #5
bigstik40
Gone Wild
 
bigstik40's Avatar
Yamaha
 
Join Date: Sep 2010
Location: Erie, Pennsylvania
Posts: 989
Default Re: Finishing voltage from Powerwise 28115-G01

I'll just let it be for now and keep on using it. The SOC meter on the cart makes it pretty easy to monitor the shut-off voltage once in a while and I'll keep an eye on it. Thanks again for your wisdom. - Ray

PS=I also have questions coming up for a Powerwise III I'm repairing, but I'll put that in a new thread.
bigstik40 is offline   Reply With Quote
Old 11-29-2014, 03:59 PM   #6
JohnnieB
Techno-Nerd
 
JohnnieB's Avatar
E-Z-GO
 
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
Default Re: Finishing voltage from Powerwise 28115-G01

Powerwise III???? Never heard of it.
JohnnieB is offline   Reply With Quote
Old 11-29-2014, 08:10 PM   #7
catmcaw
Gone Wild
 
Join Date: Jul 2013
Location: N. Myrtle Beach
Posts: 151
Default Re: Finishing voltage from Powerwise 28115-G01

I agree with JohnnieB about the DPI charger. Thinking back on the money I've sunk into my cart, the DPI charger is at the top list when it comes to money well spent.
catmcaw is offline   Reply With Quote
Old 11-30-2014, 07:03 AM   #8
bigstik40
Gone Wild
 
bigstik40's Avatar
Yamaha
 
Join Date: Sep 2010
Location: Erie, Pennsylvania
Posts: 989
Default Re: Finishing voltage from Powerwise 28115-G01

Quote:
Originally Posted by JohnnieB View Post
Powerwise III???? Never heard of it.
It's a Total Charge III-. Sorry for that! - Ray
bigstik40 is offline   Reply With Quote
Old 11-30-2014, 08:33 AM   #9
JohnnieB
Techno-Nerd
 
JohnnieB's Avatar
E-Z-GO
 
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
Default Re: Finishing voltage from Powerwise 28115-G01

Quote:
Originally Posted by bigstik40 View Post
It's a Total Charge III-. Sorry for that! - Ray
I had a sneaking suspicion that was what you meant.

It's laid out differently, but works the same way your Powerwise does. (All the ferroresonant transformer type GC chargers work about the same.)

Open a new thread, so others can find it in a search, and fire away with any questions.

Here is a manual for it.
Attached Files
File Type: pdf TCIII & IV Owner's - Parts - Service.pdf (3.28 MB, 0 views)
JohnnieB is offline   Reply With Quote
Reply
Go Back   Buggies Gone Wild Golf Cart Forum > Golf Cart Repair and Troubleshooting > Electric EZGO


Thread Tools
Display Modes


Similar Threads
Thread Forum
Stencil and paint finishing Body and Paint
Does PowerWise 28115 Charger Switch to Trickle? Electric EZGO
getting closer to finishing Lifted Golf Carts
Powerwise cutoff voltage Electric EZGO


All times are GMT -5. The time now is 10:17 PM.


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

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
This Website and forum is the property of Buggiesgonewild.com. No material may be taken or duplicated in part or full without prior written consent of the owners of buggiesgonewild.com. © 2006-2017 Buggiesgonewild.com. All rights reserved.