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02-27-2018, 09:37 AM | #1 |
Not Yet Wild
Join Date: Feb 2018
Posts: 22
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6volt batteries read different
Have trouble with my water boiling out, charged it last night and tested voltage on batteries, 4 of them read 6.5 volts, 1 read 4.5 and 1 read 5.4. Will the different readings cause my problem of water boiling out and what should a fully charged 6volt battery read. New at this golf cart stuff so need an answer ASAP, thanks
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02-27-2018, 09:40 AM | #2 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,419
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Re: 6volt batteries read different
Welcome to BGW
The charger is looking for a specific number in terms of pack voltage to cut off. You have 2 bad batteries which are not coming up. What happens is the good batteries get over charged when the bad batteries cannot reach the required voltage. Here is a state of charge chart which will give you the information you need. |
02-27-2018, 09:46 AM | #3 | |
Not Yet Wild
Join Date: Feb 2018
Posts: 22
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Re: 6volt batteries read different
Quote:
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02-27-2018, 10:18 AM | #4 |
Not Yet Wild
Join Date: Jan 2018
Posts: 3
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Re: 6volt batteries read different
Are those two batteries hooked up to 12v accessories? Have you tried charging each of those two separately? They are probably shot, but it is worth a shot, may last you some more time. When I got my cart it had 4 12v batteries with accessories hoked up to one. I have made sure to keep that one in balance, but plan to install a converter or extra battery for accessories in the near future. Here is a link to a youtube I created about keeping that one battery balanced with the others in the pack. Should be the same concept on yours, but you just need to do it twice with the two lower batts. Like I said, they may already be damaged depending on how long they have been like this, but it does not hurt to try. https://www.youtube.com/watch?v=PpuF3YjFp6M
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02-27-2018, 11:16 AM | #5 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,419
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Re: 6volt batteries read different
It is wise to find 2 good used batteries of the same voltage and capacity to replace the bad ones. It is not wise to add 2 new batteries to a 3 yr old pack as the new batteries will quickly degrade to the level of the old ones.
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02-27-2018, 06:07 PM | #6 |
Getting Wild
Join Date: Apr 2010
Posts: 81
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Re: 6volt batteries read different
Are you able to mix 6V and 12v Battey in series for testing?
36v to 48v performance test. |
02-27-2018, 08:02 PM | #7 |
Gone Wild
Join Date: Jan 2013
Location: Saint Petersburg, FL
Posts: 2,089
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Re: 6volt batteries read different
Maybe, but... If you throw an extra 12v inline with a solenoid and controller that isn't rated for that you'll probably fry them.
If they are rated and you put a 12v marine battery in line it will not be able to deliver the amps like the 6v batteries will. So it will suffer a much heavier load relative to it's capabilities. If you don't run it much and make sure it doesn't drop too low then a couple test hits would probably not damage the battery. I don't know if the 12v will have more voltage sag for a few test hits. I would guess it would but I'm not sure. But it will certainly die a quick death if you leave it in the batt pack with the normal 6v golf cart batteries for normal use. |
02-27-2018, 11:31 PM | #8 | |
Getting Wild
Join Date: Apr 2010
Posts: 81
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Re: 6volt batteries read different
Quote:
Yes, controller and solenoid are rated for 48v. I am just going to use it for a short test to see the performance difference. Likely keep a multi-meter on the system to monitor. I am considering going 48V, want to see what kind of performance I should expect before buying 2 more batteries, cables, and a charger. |
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02-28-2018, 11:24 AM | #9 |
Gone Wild
Join Date: Jan 2014
Location: South Georgia
Posts: 1,120
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Re: 6volt batteries read different
It is amazing how good advice is ignored.
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02-28-2018, 11:54 AM | #10 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,419
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Re: 6volt batteries read different
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