07-11-2020, 09:54 AM | #1 |
Gone Wild
Join Date: Jul 2019
Location: Newport News, VA
Posts: 155
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Battery Question
I have a 2006 Yamaha G-22 48V I am fixing up to sell. I am trying to figure if the batteries are any good. They are 2018 Trojans that were basically dry and dead when I got the cart. I nursed them back to taking a charge. I am currently using a 48v low amp generic charger (previously used a real 48v charger but that got sold with another cart). Each time I put the cart on a charger for a few hours the batteries will hold a higher charge. I can get them to hold 49 to 50 volts. There has been no use of the cart in between charging. Today I took the cart around the block at pretty much wide open. (I cant do much road testing as they are not legal on streets here). Anyway, I had a simple LED battery gauge hooked up while running. Started with the batteries around 49 (can't remember exact #, yes I know this is not fully charged pack voltage). While riding, the gauge would drop down as low as 45 volts. As soon as I slowed or stopped the voltage would rise back up. Within a minute or two of stopping, the voltage is reading almost back to where I started at 48.8v. Is it normal for battery voltage to drop to 45 while running then climb back up after you stop? I am fairly new to carts. Want to sell this cart and want to be full disclosure to prospective buyer on battery condition. Should I charge the pack longer to see what it holds? I have been a little reluctant to leave it on charge for more than a few hours at a time as the charger is not automatic. As I stated earlier, they seems to hold a little higher each time I put them on the charger. Yes, I know this is the Club Car Forum but that is where the knowledge and activity is and I figured batteries are batteries no matter what cart they are in. As always, I appreciate the assistance and comments here. Joe
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07-11-2020, 05:52 PM | #2 | |
Growing In Grace
Join Date: Aug 2011
Location: Retired now and back home in Louisiana
Posts: 6,301
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Re: Battery Question
Quote:
I can't help you with the battery condition. After being dry and dead surely didn't help them. What I'd do is bring the pack up to full charge if you can and check the voltage of each battery after a 24 hour rest period. That will give you an idea of each batteries condition. |
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07-12-2020, 06:52 AM | #3 |
Gone Wild
Join Date: Jul 2019
Location: Newport News, VA
Posts: 155
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Re: Battery Question
Thanks down south. I was concerned with the drop but glad to hear that is normal. I will keep playing with them. Like I said, each time I put them on the charger for a few hours they hold a little higher charge. I will run the cart up the street a few times (hopefully without being caught) then charge them back up and see how they do. Shame the maintenance guys who used the cart didn't take better care. Nice set of expensive trojans got abused. fingers crossed.
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07-12-2020, 11:33 AM | #4 | ||||
Gone Wild
Join Date: Nov 2016
Location: near Calgary, AB, Canada
Posts: 1,516
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Re: Battery Question
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What charger are you using? I am not aware of any battery charger made in the last 40 years that does not monitor maximum voltage or voltage change with time and automatically shut down. |
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