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Old 04-01-2020, 11:31 PM   #1
Craigmtb
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Yamaha
 
Join Date: Dec 2019
Location: Lake Tapps
Posts: 21
Default Battery Drain Issue

Yamaha G8, finally have cart running. it runs well for 100 yrds, then slows down. Drove about a mile and then measure voltage 36.34. Tested each battery each was 6.05-6.06

Batteries are new. Bought 3 four months ago, only used cart once to drive about 200 yards to see if it ran. Kept batteries charged. Bought additional 3 yesterday. all are within a 1/10 of a volt when charged.
Charged Batteries: immediately after 40.6
2nd Charge: checked few minutes after charger turned off 39.6
Checked Charge 3 hours later 38.9
I will check at 12 hours....

Also, should there be power to motor when cart is off? measured terminals, it is 29.6

Thanks

Craig
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Old 04-02-2020, 08:47 AM   #2
Craigmtb
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Yamaha
 
Join Date: Dec 2019
Location: Lake Tapps
Posts: 21
Default Re: Battery Drain Issue

12 hour voltage test 38.7
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Old 04-02-2020, 09:42 AM   #3
teecro
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Default Re: Battery Drain Issue

Quote:
Originally Posted by Craigmtb View Post
12 hour voltage test 38.7
After resting 12 hours in a 36 volt system if your above 38.4 those batteries are holding better than 100 % SOC...
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