Precedent Charging

LarryLive · 05-05-2018, 11:01 AM

Guys I checked my batteries today because the yellow light kept coming on and going off. 3 of the batteries were at 12.5 volts but 1 was at 10.5 volts. I am trying too see if it will charge up with my regular charger. Can I change just the 1 battery? The batteries are only 3 year old Trojans and have very light usage.

NoleFan4Ever · 05-05-2018, 02:27 PM

Look for a good used battery of similar age if you can and change it out to buy you time till the others go bad.

NoleFan4Ever · 05-05-2018, 02:29 PM

And if you have been keeping it plugged in all the time, that is strange to fail at 3 years old...

LarryLive · 05-05-2018, 03:34 PM

Thanks for the reply. I charged the battery that was at 10.5 volts using my car charger and I have the cart charger plugged into it now hoping that it will equalize.

WalterM6 · 05-05-2018, 03:58 PM

The next question is. Why is that one battery out of balance. Do you run your 12v accessories off of one 12v battery. If you do you may want to get a 48v-12v reducer.

LarryLive · 05-06-2018, 07:22 AM

I got the battery that was at 10.5 up to 13.2 and then charged the whole system. I am getting at least 13 volts to each battery and 53 volts across the whole system.

LarryLive · 05-06-2018, 07:36 AM

Does 53 volts sound right? I keep reading that it should be over 60 volts fully charged?

lockman1 · 05-06-2018, 08:11 AM

The charger puts out around 63v while charging,
53v is about right JUST AFTER you disconnect the charger from the cart,
If you were to let it sit off of the charger for 12 hours, the voltage should drop to about 50.9v for a full charge.

LarryLive · 05-06-2018, 08:15 AM

Thanks for the quick reply. I thought 60 volts sounded like a lot for a 48 volt system.

NoleFan4Ever · 05-06-2018, 09:49 AM

As WM6 noted, there has to be a reason that battery did not charge when the others did. I suspect a bad cable there so you need to pull, clean, inspect, and reinstall/tighten each one...

05-05-2018, 11:01 AM	#1
LarryLive Gone Wild Join Date: Jan 2008 Posts: 196	Precedent Charging Guys I checked my batteries today because the yellow light kept coming on and going off. 3 of the batteries were at 12.5 volts but 1 was at 10.5 volts. I am trying too see if it will charge up with my regular charger. Can I change just the 1 battery? The batteries are only 3 year old Trojans and have very light usage.
LarryLive Gone Wild Join Date: Jan 2008 Posts: 196

05-05-2018, 02:27 PM	#2
NoleFan4Ever MOD of all BS! Join Date: Sep 2011 Location: Florida Posts: 17,477	Re: Precedent Charging Look for a good used battery of similar age if you can and change it out to buy you time till the others go bad.

05-05-2018, 02:29 PM	#3
NoleFan4Ever MOD of all BS! Join Date: Sep 2011 Location: Florida Posts: 17,477	Re: Precedent Charging And if you have been keeping it plugged in all the time, that is strange to fail at 3 years old...

05-05-2018, 03:34 PM	#4
LarryLive Gone Wild Join Date: Jan 2008 Posts: 196	Re: Precedent Charging Thanks for the reply. I charged the battery that was at 10.5 volts using my car charger and I have the cart charger plugged into it now hoping that it will equalize.
LarryLive Gone Wild Join Date: Jan 2008 Posts: 196

05-05-2018, 03:58 PM	#5
WalterM6 Gone Wild Join Date: Apr 2017 Location: SE TN Posts: 2,226	Re: Precedent Charging The next question is. Why is that one battery out of balance. Do you run your 12v accessories off of one 12v battery. If you do you may want to get a 48v-12v reducer.

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05-06-2018, 07:22 AM	#6
LarryLive Gone Wild Join Date: Jan 2008 Posts: 196	Re: Precedent Charging I got the battery that was at 10.5 up to 13.2 and then charged the whole system. I am getting at least 13 volts to each battery and 53 volts across the whole system.
LarryLive Gone Wild Join Date: Jan 2008 Posts: 196

05-06-2018, 07:36 AM	#7
LarryLive Gone Wild Join Date: Jan 2008 Posts: 196	Re: Precedent Charging Does 53 volts sound right? I keep reading that it should be over 60 volts fully charged?
LarryLive Gone Wild Join Date: Jan 2008 Posts: 196

05-06-2018, 08:11 AM	#8
lockman1 What the ....? Join Date: Jan 2007 Location: N.E. Wisconsin Posts: 14,928	Re: Precedent Charging The charger puts out around 63v while charging, 53v is about right JUST AFTER you disconnect the charger from the cart, If you were to let it sit off of the charger for 12 hours, the voltage should drop to about 50.9v for a full charge.

05-06-2018, 08:15 AM	#9
LarryLive Gone Wild Join Date: Jan 2008 Posts: 196	Re: Precedent Charging Thanks for the quick reply. I thought 60 volts sounded like a lot for a 48 volt system.
LarryLive Gone Wild Join Date: Jan 2008 Posts: 196

05-06-2018, 09:49 AM	#10
NoleFan4Ever MOD of all BS! Join Date: Sep 2011 Location: Florida Posts: 17,477	Re: Precedent Charging As WM6 noted, there has to be a reason that battery did not charge when the others did. I suspect a bad cable there so you need to pull, clean, inspect, and reinstall/tighten each one...

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