new battery wont charge

[Andy4639]

He doesn't have it turned right. Got the - and + switched maybe. It would charge but not as good as the others. My guess.

[gaston]

For the light system use something you can keep rotating wires as crocodile clamps, this will give you the ability of keep rotating the load to 2 then other 2 later other 2 batteries keeping the charge near to balanced.
The age on batteries will be a point of concern also, shelf batteries are problematic.
Post a picture of your setup this will help us to determine your problem!

[chiott]

Here is a pic of the wire setup I have. Thanks!

[tonyton]

It looks accurate as far as - to +. That is if the labels are all the same. I appears the charger cables are correct....You may have got a second bad battery. You need to test individual voltages before and 1/2hour after charge. This will tell you your base reading.
A load tester is a qiuck way to test, not many people have them.
You can isolate two of the batteries and charge with a 12v charger, or the problem battery alone, if you have a 6v charger. Run it to full charge turn it off and record the reading every hour or so. If it continues to slowly drop, it's probably a bad battery,
You could also switch two batteries and if the problem moves, The battery is the problem. If it doesn't move with the switch, there is a wiring issue.

[gaston]

chiott what are these 2 wires marked on your picture for?
It seems those 2 are drawing 30 volts only?, but as per your description this mean to be battery 6, not 1... did you check the charger polarity OK?

I got to say no offense this looks as spider web for me,

Put the cart on charge and do individual readings with charger working and post them here please...
Battery 1 is the one near to positive, 6 the one at negative charger side, and please highlight the # problem battery.

I see a mayor flaw drawing power for 12v for only those 2 batteries constantly, what you are doing is drawing more power of only those 2, then when you plug the charger it will overcharge the other 4 until those 2 reach their charge, this is seen in many factory carts but does not mean is a good practice. Use the clamps as I described to keep rotating wires from 2 to 2 batts.

[jml944]

Gaston, the clip idea sounds good. How often do you rotate the connections?

[gaston]

I suggest my customers to do it daily if you use light system everyday, it really depends on how much you use the lights or draw 12 volts from only 2 batts, at the end the best is the DC converter if you want to keep your entire pack healthy

[chiott]

Thanks for all the help, I plan on working on it this week. Were would be the best place to get some 6v lights? Thanks again!