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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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04-28-2014, 02:17 PM | #21 |
Gone Wild
Join Date: Jan 2014
Location: South Georgia
Posts: 1,120
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Re: 91 marathon, new guy trying to figure it out!
I think you would be wise to replace the weak batteries and see how the charger and the golf cart performs and follow above suggestions on upgrading it. Being new guy trying to figure out carts and not familiar with all that is involved upgrading and the consequence in changing just one item to increase speed, I would recommend you get it running with what is in there and get familiar with golf carts. Be careful charging 36 volt battery bank with a 48 volt charger because this can cause hydrogen gas which can go boom. There is plenty of information and opinions on golf carts here. Above is just my suggestion from my opinion.
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04-28-2014, 03:13 PM | #22 | |
Not Yet Wild
Join Date: Apr 2014
Posts: 20
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Re: 91 marathon, new guy trying to figure it out!
Quote:
http://www.ebay.com/itm/EZGO-TOTAL-C...item1c39c0f9b7 |
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04-28-2014, 04:52 PM | #23 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: 91 marathon, new guy trying to figure it out!
Quote:
The TC (aka TC-1) is an automatic charger. Here is a wiring diagram. The timer shows elapsed time, and is a 12 hour back-up timer. BTW: The TC-II has got all sorts of bells and whistles. Faceplate photo attached |
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04-28-2014, 04:55 PM | #24 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: 91 marathon, new guy trying to figure it out!
Quote:
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04-29-2014, 10:17 AM | #25 |
Not Yet Wild
Join Date: Apr 2014
Posts: 20
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Re: 91 marathon, new guy trying to figure it out!
Does that board convert it to an automatic charger then? Automatic meaning that there's no dial to set and it senses when the voltage is low and applied proper charge. I realize my charger should be semi automatic in the sense that you turn the dial to start and it shuts off when sensing full charge or time runs out, whichever happens first. Mine currently runs 12 hours regardless of pack charge.
Do you think my issue is with the control board? i've read on a few other posts that the lack of click when I plug in the receptable indicates there may be an issue. It also buzzes pretty loud if sitting at a certain angle. Thanks for the replies. |
04-29-2014, 01:23 PM | #26 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: 91 marathon, new guy trying to figure it out!
Quote:
Normally, the relay closes when the control board sense it is attached to a battery pack whose voltage is about 30V or more. The charger does not have to be plugged into AC power for the relay to close, but if it is, you while hear the transformer start humming. When the control board sense a voltage of about 45V, it opens the relay, removing AC power to the transformer, shutting the charger off. You have a first generation automatic charger and the control board they used did not have an electronic back-up timer, so they used an electromechanical one. The timer stops when the control board sense 45V and open the relay, so the time shown by the pointer tells you how long it took to reach 45V. If the new control board has an electronic backup timer built into it, you can bypass the electromechanical timer. ---------- If yours is running 12 hours, the relay is bypassed. Yes they do hum loudly. |
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04-29-2014, 01:27 PM | #27 |
Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: 91 marathon, new guy trying to figure it out!
Oops, i had TC3 And TC2 confused. That TC2 board with all the "bells & whistles" is crazy expensive if i recall. I converted one to TC3 to save the crazy expense. In this thread, I was refering to converting a "timer" model to a "no timer knob" model. Either way, the conversion is quite easy with the instructions included in the box (included in the box if you get a "genuine" board, not chinese knock-off). Sorry for any confusion created.
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04-29-2014, 01:53 PM | #28 |
Not Yet Wild
Join Date: Apr 2014
Posts: 20
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Re: 91 marathon, new guy trying to figure it out!
Ok so someone's been in it already messing around. Thanks jonny and cg for the info. CG do you have any good sources for a genuine board? Are there any safety precautions I need to take after opening the charger up to replace the board? Do I need to discharge anything?
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04-30-2014, 06:47 AM | #29 |
Gone Mad
Join Date: Oct 2009
Location: Buford, GA
Posts: 8,988
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Re: 91 marathon, new guy trying to figure it out!
You need to discharge the large capacitor. Though not the "proper" way, I use safety glasses and an insulated screwdriver to short the two posts. If you have a resistor, that's the proper way to slowly discharge it. Always check it with a DMM to be sure it has no residual charge.
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05-01-2014, 10:17 AM | #30 |
Not Yet Wild
Join Date: Apr 2014
Posts: 20
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Re: 91 marathon, new guy trying to figure it out!
You just connect the posts together with the screwdriver or ground it to another piece of metal?
Am I going to overcook my batteries if I keep using the charger until I get the board replaced? Anyone have a good source to buy the replacement board? One of the sponsored vendors would be preferable if they sell that type of thing. |
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