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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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09-12-2012, 05:33 AM | #1 |
Not Yet Wild
Join Date: Aug 2012
Location: Northwest Indiana
Posts: 46
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ezgo electric hill power
does anyone know how to get more hill climbing power out of an 36 volt electric ezgo marathon. seem like we have to get out and push whenever we get to a little grade.
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09-12-2012, 06:27 AM | #2 |
Gone Wild
Join Date: Sep 2010
Location: Florida
Posts: 1,895
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Re: ezgo electric hill power
Sounds like one of two things is happening...either you have a weak battery or battery or battery pack, or your controller is getting weak and it wont be too long before you will need a replacement.
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09-12-2012, 08:07 AM | #3 |
Stay thirsty my friends!
Join Date: Jan 2007
Location: Suburban Chicago
Posts: 24,291
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Re: ezgo electric hill power
Hook up a multimeter to your pack. Give us the voltage at rest, while running flat out on flat ground, and while trying to go up an incline.
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09-12-2012, 09:09 AM | #4 | |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,419
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Re: ezgo electric hill power
Quote:
With that info you will have a rough assessment of the batteries. It is typical for a DC vehicle to slow under load. It should however, keep going and not need a push up a small incline so it does sound to me like you may have a weak battery or 2 ? If the load test shows a voltage drop of more than 5 volts I suggest you move the meter to battery #1 and repeat the test. Record the results and then move the meter to battery #2 and repeat. Hopefully you have installed some alligator clamps on your test leads to make this easier.....the scientific results are worth the effort. If you determine your batteries are good, there are controller amperage up grades available too which will increase your torque. |
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09-13-2012, 07:29 AM | #5 |
Not Yet Wild
Join Date: Aug 2012
Location: Northwest Indiana
Posts: 46
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Re: ezgo electric hill power
thank you all so much for the information. My voltage is 38,6 at rest 36.8 running down the street and in the grass going uphill it hit a low of 35
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09-13-2012, 07:35 AM | #6 |
Not Yet Wild
Join Date: Aug 2012
Location: Northwest Indiana
Posts: 46
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Re: ezgo electric hill power
I forgot to mention I am running 3 new 700 cca 12 volt marine batteries for now and I am sure this may have something to do with it. All cables have been changed to 2 gage wires and all contact point have been polished to remove and oxidation. I also did a test run with the solenoid bypassed to see if that might have been the issue but the same results were found.
Once again, Thank you all for the help. |
09-13-2012, 08:25 AM | #7 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: ezgo electric hill power
Quote:
Marine batteries tend to fall between SLI (Start-Lights-Ignition or car battery) and Deep Cycle batteries and having a CCA (Cold Cranking Amps) rating rather than an AH (Amp Hour) rating, I suspect yours are closer to car batteries in design. At best, a 12V battery that is roughly the same physical dimensions as a 6V battery will have about the same storage capacity (kWh), but you only have half the number of batteries in your pack, so you only have half the stored energy as a 6 x 6V pack. Because the amps required to run the cart at 36V is the same no matter what the voltage of the batteries that make up the 36V battery pack is, the smaller cells (Half the size physically) that make up the 12V batteries will drop off in voltage faster than the larger cells on 6V batteries. Also, due to the fact they are being work twice as hard, the 12V batteries won't last very long. |
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09-13-2012, 08:32 AM | #8 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,419
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Re: ezgo electric hill power
Agreed
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09-13-2012, 10:21 AM | #9 |
Gone Wild
Join Date: Sep 2010
Location: Florida
Posts: 1,895
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Re: ezgo electric hill power
Agreed Agreed
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09-13-2012, 10:39 AM | #10 |
Gone Wild
Join Date: Aug 2011
Location: Bunnell, Florida
Posts: 2,408
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Re: ezgo electric hill power
I am also using marine deep cycle batteries except mine are rated in amp hours and state " not for starting use "!
Here's a simple way to look at it. One of my batteries weighs 110lbs. A single 6V " Trojan " ( for example ) weighs 72lbs. My 3 batteries total 330lbs. 6 Trojans total 432lbs. That's a big difference in active material! I do not have the range that I would using the 6V batteries. I don't have any problem with hills, but mine is an industrial cart and is geared differently that a golf cart. I hope my explanation helps! |
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