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07-25-2017, 06:44 AM | #1 |
Not Yet Wild
Join Date: Jul 2017
Location: kingston Ga
Posts: 8
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charger overcharging
I think I read here that 38.2 volts is the correct voltage for fully charged batteries.
My charger keeps charging, I check voltage on batteries, it was at 40.8 volts and it was still charging, so I disconnected it. What is the stopping point for a charger. Also the voltage indicator light still flickers between the 2-3 bar. not sure how to correct that. would think it should show full charge. cart is a 2002 36v any help is greatly appreciated. |
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07-25-2017, 07:05 AM | #2 |
Gone Wild
Join Date: Jan 2014
Location: South Georgia
Posts: 1,120
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Re: charger overcharging
The voltage while charging will be a few volts higher before charger cuts off.
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07-25-2017, 07:17 AM | #3 |
Gone Mad
Join Date: Oct 2009
Location: Buford, GA
Posts: 8,988
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Re: charger overcharging
I have a 48 volt charger, but I believe for 36 volts, the charger won't cut off until it reaches around 45 volts.
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07-25-2017, 07:19 AM | #4 |
Not Yet Wild
Join Date: Jul 2017
Location: kingston Ga
Posts: 8
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Re: charger overcharging
The batteries are only about a year old. I do not want to take a chance on ruining them y overcharging, should I keep charging. at what point should the charger cut off?
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07-25-2017, 07:23 AM | #5 |
Gone Mad
Join Date: Oct 2009
Location: Buford, GA
Posts: 8,988
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Re: charger overcharging
See post #3. Around 45 volts.
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07-25-2017, 07:33 AM | #6 |
Not Yet Wild
Join Date: Jul 2017
Location: kingston Ga
Posts: 8
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Re: charger overcharging
thank, the 48volt part confused me
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07-25-2017, 10:01 AM | #7 |
Gone Wild
Join Date: Aug 2014
Location: fletcher,nc
Posts: 601
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Re: charger overcharging
voltage from the charger runs up past 50 something before shutting off...jonnieB can give an exact explanation,along with others...
36.31 is considered 50% state of charge-so at that point you would need to charge the pack before using to keep from damaging the pack... you might even say a 36v pack is not really that at all.... my pack reads 39.4 24hrs after a charge and i am getting great service out of the pack so far.... |
07-25-2017, 10:28 AM | #8 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: charger overcharging
Quote:
2. When the on-charge voltage is in the 44V to 46V range for Ferroresonant Transformer type charges, but may be higher (up to about 50V) for modern chargers that use dV/dT (change in Voltage over change in Time) technology to determine SoC. (A Lead-Acid battery isn't fully charged until the on-charge voltage ceases to increase while a charging current is passing through the electrolyte. Ferroresonant Transformer type chargers don't fully charge batteries.) 3. Since the charge was terminated at 40.3V, your batteries are less than 100% charged, so your LED bar-graph meter may be giving a correct reading. |
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07-25-2017, 10:53 AM | #9 | |
Gone Wild
Join Date: Jul 2010
Location: Peachtree City, Ga.
Posts: 2,759
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Re: charger overcharging
Quote:
Curtis meters need to see 2.35v per cell for 6 minutes or 42.3v for a six pack of 6v batteries to reset to full. Clone meters may or may not be the same. |
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07-25-2017, 11:24 AM | #10 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: charger overcharging
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