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Old 02-17-2016, 02:17 AM   #1
tonymoak1111
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Exclamation 4 month old batteries won't stay charged long

I recently installed 6-6 volt US batteries in my Ez go about 4-6 months ago. After installation, the batteries would last for 10+ miles slite grade. As of now, I'm lucky to get 2 miles before they are near dead. What happened here????
(When I plug cart in, it charges for about half the cycle time. Batteries show full charge. I have 2 chargers and it does it with both). Thanks for the helpin advance!!!!!!
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Old 02-17-2016, 07:00 AM   #2
MichaelClayshulte
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Default Re: 4 month old batteries won't stay charged long

Did you check the water levels?
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Old 02-17-2016, 07:53 AM   #3
rottie
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Default Re: 4 month old batteries won't stay charged long

Which model batteries did you install?
Did you follow the break-in procedure?

Are any of the cables/controller getting hot?
What is your definition of a slight grade?
As "MichaelClayshulte" said what are you water levels?
What is you setup, controller/motor?
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Old 02-17-2016, 08:03 AM   #4
270Handiman
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Default Re: 4 month old batteries won't stay charged long

When you say 'batteries would last for 10+ miles slite (slight) grade', what does that mean? How far were you running them down? Do you have a digital voltmeter installed on your cart to monitor pack voltage?
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Old 02-17-2016, 08:15 AM   #5
JohnnieB
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Default Re: 4 month old batteries won't stay charged long

Your charger(s) might not be capable of fully charging US Battery batteries.

What is the Make/Model of the chargers you have used to charge them?

Attached in a SoC chart for US Battery Deep-Cycle Wet-Cell Lead-Acid batteries.
The voltage reading is taken 12 to 24 hours after the charger turns of automatically.

Also what is the model on the USB batteries you have?
Attached Images
File Type: png US Battery SoC vs OCV table from USB.png (185.3 KB, 0 views)
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Old 02-17-2016, 08:20 AM   #6
Sir Nuke
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Default Re: 4 month old batteries won't stay charged long

all of the above....OR you have one battery that is bad.....
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Old 02-17-2016, 10:57 AM   #7
scottyb
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Default Re: 4 month old batteries won't stay charged long

Quote:
Originally Posted by Sir Nuke View Post
all of the above....OR you have one battery that is bad.....
Or one installed backwards
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Old 02-17-2016, 11:25 AM   #8
tonymoak1111
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Default Re: 4 month old batteries won't stay charged long

I am running US 2200 batteries (2015) I am using a power wise charger. All water levels are good and I have load tested all the batteries and all appear good. I have a 500 amp Altrax controller and a AMD-36 Volt motor (4.45 hp@3570 RPM)
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Old 02-17-2016, 11:26 AM   #9
tonymoak1111
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Default Re: 4 month old batteries won't stay charged long

Batteries are installed correctly.
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Old 02-17-2016, 11:37 AM   #10
tonymoak1111
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Default Re: 4 month old batteries won't stay charged long

Quote:
Originally Posted by JohnnieB View Post
Your charger(s) might not be capable of fully charging US Battery batteries.

What is the Make/Model of the chargers you have used to charge them?

Attached in a SoC chart for US Battery Deep-Cycle Wet-Cell Lead-Acid batteries.
The voltage reading is taken 12 to 24 hours after the charger turns of automatically.

Also what is the model on the USB batteries you have?
I am using the Power Wise Charger that came with Cart. I have 2
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