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Old 05-27-2016, 09:41 AM   #1
themaninthesand
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Join Date: May 2016
Posts: 8
Default 2008 Electric Drive Loosing Power??

Hi -

I have a 2008 Yamaha Electric Drive golf cart that I just put 4 new US 12 V batteries in. The batteries that were in there were all from 2011 and when tested were not good. I replaced the batteries because the car was going slow (10-12 mph) and would slow down within a minute of driving, and would slow to almost a crawl on any type of hill.

So, I was hopeful that new batteries would fix this. They did not. Seems like when I hit the gas, more power initially, but same slow down occurs. Any suggestions? In searching online the two most common suggestions seem to be (1) bad battery cables or (2) a bad solenoid.

Thoughts?

Thanks.
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Old 05-27-2016, 11:35 AM   #2
Volt_Ampere
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Yamaha
 
Join Date: May 2012
Location: Rio Verde, Az
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Default Re: 2008 Electric Drive Loosing Power??

Check your cable connections and see if any are getting hot. Check your battery voltages. Don't assume that new batteries are fine. Check them out.
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Old 05-27-2016, 03:43 PM   #3
themaninthesand
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Default Re: 2008 Electric Drive Loosing Power??

Thanks. I'm replacing cables and will test batteries.
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Old 06-01-2016, 10:29 AM   #4
themaninthesand
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Default Re: 2008 Electric Drive Loosing Power??

Ok, checked connections and replaced where the wires looked less than ideal. Confirmed batteries are good. Still loss of power. Solenoid? Something else? Ideas?

thanks.
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Old 06-24-2016, 05:21 PM   #5
ProsperDad
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Yamaha
 
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Default Re: 2008 Electric Drive Loosing Power??

Did you change the charger as well?

US Battery requires 117% charge returns and your charger was designed for use with the maroon batteries that came in the car; 110% charge returns.

You are undercharging the batteries.
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