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 04-28-2020, 02:17 PM   #1
mfinnegan
Gone Wild
 
mfinnegan's Avatar
E-Z-GO
 
Join Date: Mar 2020
Location: CT
Posts: 320
Default Total charge 3 possible issue..

Ran the cart a bunch testing out the new motor I got..the pack voltage ran down to 36.2V. Plugged it in the charger and it kicked on to 15AMP and was humming along. Pack voltage climbed to 42V in about 3 mins and then the charger just clicked off...while still plugged in it dropped down to 36.6V in about 10 minutes and won't turn back on.... I unplugged it from the cart and plugged it back in, but it's the same cycle only way, faster shutting off in 10 seconds and dropping to 36.6V in a minute....charger problem?

Edit: quick dumb video https://www.youtube.com/watch?v=vnbVJlOkU5w
mfinnegan 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 04-28-2020, 03:46 PM   #2
JohnnieB
Techno-Nerd
 
JohnnieB's Avatar
E-Z-GO
 
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
Default Re: Total charge 3 possible issue..

Sounds like a bad connection (excessive resistance) in the charging circuit. Someplace between the heatsink the diodes are on and the transformer center-tap inside the charger and the main + and - terminals on the battery pack inside the cart.

Your dash mounted DVM is connected between the battery pack's main + and - terminals, but the charger's control board is looking at the voltage between the heatsink and center-tap. Excessive resistance in the wires/cables connecting those points will cause a higher voltage to be seen at the control board than at the battery pack when there is amp flow in the charging circuit.

Clean all the connections and the problem might go away.

The charger is likely to be working normally, just seeing artificially high voltage.

Attached is a TC-III manual.
Attached Files
File Type: pdf TCIII & IV Owner's - Parts - Service.pdf (3.28 MB, 0 views)
JohnnieB is offline   Reply With Quote
Old 04-28-2020, 04:51 PM   #3
mfinnegan
Gone Wild
 
mfinnegan's Avatar
E-Z-GO
 
Join Date: Mar 2020
Location: CT
Posts: 320
Default Re: Total charge 3 possible issue..

Quote:
Originally Posted by JohnnieB View Post
Clean all the connections and the problem might go away.

The charger is likely to be working normally, just seeing artificially high voltage.

Attached is a TC-III manual.
Thanks for the info and PDF, JohnnieB. I'll crack her open tonight and give a good cleaning.
mfinnegan is offline   Reply With Quote
Old 04-28-2020, 05:23 PM   #4
JohnnieB
Techno-Nerd
 
JohnnieB's Avatar
E-Z-GO
 
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
Default Re: Total charge 3 possible issue..

Quote:
Originally Posted by mfinnegan View Post
Thanks for the info and PDF, JohnnieB. I'll crack her open tonight and give a good cleaning.
A .22 cal bore brush works well for cleaning the inside of the cart's charge receptacle terminals.

Be a good time to clean all the battery connections.
JohnnieB is offline   Reply With Quote
Old 04-28-2020, 06:05 PM   #5
mfinnegan
Gone Wild
 
mfinnegan's Avatar
E-Z-GO
 
Join Date: Mar 2020
Location: CT
Posts: 320
Default Re: Total charge 3 possible issue..

Quote:
Originally Posted by JohnnieB View Post
A .22 cal bore brush works well for cleaning the inside of the cart's charge receptacle terminals.

Be a good time to clean all the battery connections.
Definitely will clean battery connections..I have brand new shiny SB50 receptacle plastic end and metal tips...here are some pics. Before I dive in, does this look savable? Or should I get something like this instead? https://www.amazon.com/dp/B07NPWP1FH..._bzlQEbEKQEGNB
Attached Images
File Type: jpg 20200428_190320.jpg (202.3 KB, 0 views)
File Type: jpg 20200428_190329.jpg (235.2 KB, 0 views)
File Type: jpg 20200428_190350.jpg (240.5 KB, 0 views)
File Type: jpg 20200428_190341.jpg (205.6 KB, 0 views)
mfinnegan is offline   Reply With Quote
Old 04-28-2020, 06:50 PM   #6
JohnnieB
Techno-Nerd
 
JohnnieB's Avatar
E-Z-GO
 
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
Default Re: Total charge 3 possible issue..

Wow, that charger needs some TLC. All the connections look corroded, but only the ones from the transformer to the B- (black) wire in the output cable through the cart's battery pack and back in on the B+ (white) wire through the diodes to the transformer will cause the control board to see higher voltage than it should. I suspect it'll work normally when the excessive resistance is gotten out of the charging loop.

----------
Don't know anything good or bad about the charge you linked to.
JohnnieB is offline   Reply With Quote
Old 04-28-2020, 06:55 PM   #7
mfinnegan
Gone Wild
 
mfinnegan's Avatar
E-Z-GO
 
Join Date: Mar 2020
Location: CT
Posts: 320
Exclamation Re: Total charge 3 possible issue..

Update: so all I did was take the cover off, remove and clean the heatsink and the 3 connections, mount it all back to the frame and it charged for just under a minute. Then a pop and the brightest light I've ever seen other than a welder or the sun come from this post, and the fuse tried to pop but didn't and smoke just poured from it, AMPS dropped to zero and the cord connecting it to the cart got REALLY HOT and the pack voltage dropped to 28V before I unhooked the **** thing! WOW. I'm telling you it was that simple. Cleaned off the plate and connectors with a wire brush and just bolted it all back together. Safe to say it's toast now
Attached Images
File Type: jpg 20200428_194906.jpg (103.8 KB, 0 views)
mfinnegan is offline   Reply With Quote
Old 04-28-2020, 07:07 PM   #8
JohnnieB
Techno-Nerd
 
JohnnieB's Avatar
E-Z-GO
 
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
Default Re: Total charge 3 possible issue..

Sounds like Murphy wanted you to get a new charger.
JohnnieB is offline   Reply With Quote
Old 04-28-2020, 07:32 PM   #9
mfinnegan
Gone Wild
 
mfinnegan's Avatar
E-Z-GO
 
Join Date: Mar 2020
Location: CT
Posts: 320
Default Re: Total charge 3 possible issue..

Quote:
Originally Posted by JohnnieB View Post
Sounds like Murphy wanted you to get a new charger.
Yeah you ain't kidding! Think I'm going with the one I linked earlier. Thank you for your insight on the initial problem.
mfinnegan 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
Total Charge ll I.D. Electric EZGO
Total Charge Issue Electric EZGO
Total charge III 3 control board issue Electric EZGO
EZ-GO Total Charge 2 Electric EZGO
Total Charge 3 Golf Carts and Parts


All times are GMT -5. The time now is 05:12 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 - 2022, 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.