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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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07-13-2019, 06:18 PM | #1 |
Not Yet Wild
Join Date: Jul 2019
Location: Texas
Posts: 12
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Curtis controller
I have a Curtis Controller S/N 9363 P03009 on my 2000 ezgo txt Is there a way to test this controller if it is working correctly or not , if so can someone please let me know the steps to do this because my cart barely makes it up a incline , I did have a motor place replace brushes and bearing on my motor and also inspected it and cleaned it and said that the motor is in working condition , Will appreciate someone's help in this
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07-13-2019, 07:07 PM | #2 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,358
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Re: Curtis controller
Can you clamp a meter on the pack and see how low the pack voltage drops when the cart is performing badly?
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07-13-2019, 08:15 PM | #3 |
Not Yet Wild
Join Date: Jul 2019
Location: Texas
Posts: 12
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Re: Curtis controller
Scottyb I just went around the subdivision and it went from 39.5 to 35.9 estimate of about 1+ hour nonstop and about 6 inclines along the way and estimate of 500 pounds total with all riders included , I will have to get prongs with alligator clips now I just have the straight prongs with my meter and thanks for the reply
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07-14-2019, 12:21 AM | #4 |
Gone Wild
Join Date: Nov 2016
Location: near Calgary, AB, Canada
Posts: 1,511
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Re: Curtis controller
I believe that ScottyB's is on the right track with testing the batteries as your first step in evaluating your performance problem.
What is the make, model and age of your battery pack? |
07-14-2019, 08:55 AM | #5 |
Not Yet Wild
Join Date: Jul 2019
Location: Texas
Posts: 12
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Re: Curtis controller
Have a 2000 ezgo txt and bought all Duracell 75 Amp batteries on 10-2018 Maybe not enough amps ??? I have a hydrometer when is the best time to use it I charged the batteries last night and it showed 37.2 this morning have the charger on again to check what it shows when it cuts off again Thanks for you'll help
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07-14-2019, 09:43 AM | #6 |
Gone Wild
Join Date: Sep 2018
Location: Md.
Posts: 1,059
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Re: Curtis controller
Is that 75 amps@ 20 minute rating? If so batteries are to small. Did you get batteries spec. For golf cart or just regular automotive type deep cycles.
37.2 is an undercharged battery pack. I use hydrometer after batteries have been fully charged but not used for 10 hours. Same when taking voltage test. |
07-14-2019, 09:51 AM | #7 |
Not Yet Wild
Join Date: Jul 2019
Location: Texas
Posts: 12
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Re: Curtis controller
Cobra,1 These batteries are 75 amp @ 105 minutes FYI the charger is still going and it is showing 41.8 so far Waiting for it to shut off and will check each battery Thanks
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07-14-2019, 11:06 AM | #8 |
Not Yet Wild
Join Date: Jul 2019
Location: Texas
Posts: 12
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Re: Curtis controller
Cobra,1 Last time I checked the charge and it was at 42.2 I got side tracked and it cut off and when I checked it was at 39.2 and now it is at 39 and I did not turn on the key or drove it also thru the charge process 4 of the batteries showed 7.00 and 2 showed 6.9 and now the ones that showed 7 is showing 6.5 and the ones that showed 6.9 is showing 6.4 should all 6 show the same all the time ??? seems like it is the batteries issue , any suggestions on what I should do next Thanks
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07-14-2019, 11:56 AM | #9 |
Gone Wild
Join Date: Nov 2016
Location: near Calgary, AB, Canada
Posts: 1,511
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Re: Curtis controller
The State of Charge of a lead acid battery can be determined by measuring the stabilized voltage after charging. The stabilized voltage can best be determine by fully charging the battery pack, disconnecting the charger and allowing battery pack voltage to stabilize for 24 hours.
You can measure the after charging voltage at several times after disconnecting the charger and you will slowly see the voltage decrease until it stabilizes. Some batteries take different times to stabilize. General guidance is after 12 to 24 hours. My batteries will take 48 hour to fully stabilize. See the attached state of charge chart for more information. A fully charged and stabilized 6 volt battery should be at or above 6.37 volts. And a fully charged 36 volt pack should stabilize at or above 38.2 volts. Record your battery voltages to 2 decimal places and let us know what you find. Once you do that, you can then load test them as ScottyB suggest above. What is the Amp Hour rating of your Duracell batteries (20 hour rate)? If it is not listed on the battery top, you should be able to find your model amp hour ratings online. Are these Duracell Golf Cart rated batteries? |
07-14-2019, 12:50 PM | #10 |
Not Yet Wild
Join Date: Jul 2019
Location: Texas
Posts: 12
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Re: Curtis controller
ThreeCW These are Duracell GC2 75 Amp 105 minutes Golf Car Batteries and made in USA Should I wait 24 hours before doing any reading Thanks
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