batteries dead overnight

Wronglong · 09-17-2019, 03:25 PM

Cart had been running normally. Went to move it the next day and nothing. Batteries well maintained. Plugged in charger and would not charge. I decided to disconnect the negative cable on the last battery and noticed a small spark! Two batteries were warm.Checked batteries and they are drained out totally. I'm a newbie with car experience but no cart experience. Where do I start?

LabRat · 09-17-2019, 03:36 PM

Water, pure clean water....you gotta be pretty old to remember that song,
There is great battery maintenance info on this site. Don't worry about the little sparks...its the big sparks you got to worry about :)

Wronglong · 09-17-2019, 03:40 PM

Water is up and has been up to snuff. I'm anal on maintenance. The spark I mentioned was weak but individually the batteries are around 3 volts. I thought that a spark with the key off indicates a draw or short?

LabRat · 09-17-2019, 03:53 PM

Oh oops i thought you meant that they were out of water. Most of the time i see a little spark when connecting the last battery in a pack, Something has happen that drain your pack....lights maybe or other accessories. You will have to trick you pack to bring up the voltage so that the charger will turn on.

Wronglong · 09-17-2019, 04:09 PM

Well, I'm going to slow charge each battery separately overnight and then see if the regular charger will take over. The key was off. The lights were off. Didn't see brake lights on. Is there any way a solenoid can stick closed? Would that draw things down? As I say the left bank of two batteries were warm to the touch as if they were trying to run something?

Sergio · 09-17-2019, 04:22 PM

It would take a load of at least 10 amps to drain the batteries overnight, something else should have got hot.

Do You have any accessories tapped into those batteries?

If Your cart has an OBC make sure you leave the pack disconnected to allow the OBC to reset while You charge individual batteries.

Wronglong · 09-17-2019, 05:18 PM

No accessories but a batt gage. lights turn signal etc. Can a couple batteries that are weak affect overall charging?

Sergio · 09-17-2019, 05:40 PM

Yes since all batteries are connected in series.

The battery gauge should be connected to the entire pack and any other 12v should be on a 48v->12v reducer, so are there no other wires on any post of those two batteries that were discharged?

Golf cart guy · 09-17-2019, 05:46 PM

All 6 batteries dead? You don't mention year, but on some years, if when you lock the hill brake, and the linkage is misadjusted, it will activate the solenoid and it will drain the batteries. If only the 2 batteries that power the lights are dead, and the voltage of those 2 batteries is near nothing, then something was left on.

Goober11 · 09-17-2019, 06:41 PM

Quote:

Originally Posted by LabRat

Water, pure clean water....you gotta be pretty old to remember that song,
There is great battery maintenance info on this site. Don't worry about the little sparks...its the big sparks you got to worry about :)

Water, pure clean water. I remember that song. Sons of the Pioneers

09-17-2019, 03:25 PM	#1
Wronglong Not Yet Wild Join Date: Jun 2017 Posts: 19	batteries dead overnight Cart had been running normally. Went to move it the next day and nothing. Batteries well maintained. Plugged in charger and would not charge. I decided to disconnect the negative cable on the last battery and noticed a small spark! Two batteries were warm.Checked batteries and they are drained out totally. I'm a newbie with car experience but no cart experience. Where do I start?
Wronglong Not Yet Wild Join Date: Jun 2017 Posts: 19

09-17-2019, 03:36 PM	#2
LabRat Gone Wild Join Date: May 2019 Location: Georgia Posts: 389	Re: batteries dead overnight Water, pure clean water....you gotta be pretty old to remember that song, There is great battery maintenance info on this site. Don't worry about the little sparks...its the big sparks you got to worry about :)

09-17-2019, 03:40 PM	#3
Wronglong Not Yet Wild Join Date: Jun 2017 Posts: 19	Re: batteries dead overnight Water is up and has been up to snuff. I'm anal on maintenance. The spark I mentioned was weak but individually the batteries are around 3 volts. I thought that a spark with the key off indicates a draw or short?
Wronglong Not Yet Wild Join Date: Jun 2017 Posts: 19

09-17-2019, 03:53 PM	#4
LabRat Gone Wild Join Date: May 2019 Location: Georgia Posts: 389	Re: batteries dead overnight Oh oops i thought you meant that they were out of water. Most of the time i see a little spark when connecting the last battery in a pack, Something has happen that drain your pack....lights maybe or other accessories. You will have to trick you pack to bring up the voltage so that the charger will turn on.

09-17-2019, 04:09 PM	#5
Wronglong Not Yet Wild Join Date: Jun 2017 Posts: 19	Re: batteries dead overnight Well, I'm going to slow charge each battery separately overnight and then see if the regular charger will take over. The key was off. The lights were off. Didn't see brake lights on. Is there any way a solenoid can stick closed? Would that draw things down? As I say the left bank of two batteries were warm to the touch as if they were trying to run something?
Wronglong Not Yet Wild Join Date: Jun 2017 Posts: 19

Today
BGW	Sponsored Links __________________ This advertising will not be shown in this way to registered members. Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum

09-17-2019, 04:22 PM	#6
Sergio Gone Wild Join Date: Sep 2012 Location: Charlotte, NC Posts: 9,329	Re: batteries dead overnight It would take a load of at least 10 amps to drain the batteries overnight, something else should have got hot. Do You have any accessories tapped into those batteries? If Your cart has an OBC make sure you leave the pack disconnected to allow the OBC to reset while You charge individual batteries.

09-17-2019, 05:18 PM	#7
Wronglong Not Yet Wild Join Date: Jun 2017 Posts: 19	Re: batteries dead overnight No accessories but a batt gage. lights turn signal etc. Can a couple batteries that are weak affect overall charging?
Wronglong Not Yet Wild Join Date: Jun 2017 Posts: 19

09-17-2019, 05:40 PM	#8
Sergio Gone Wild Join Date: Sep 2012 Location: Charlotte, NC Posts: 9,329	Re: batteries dead overnight Yes since all batteries are connected in series. The battery gauge should be connected to the entire pack and any other 12v should be on a 48v->12v reducer, so are there no other wires on any post of those two batteries that were discharged?

09-17-2019, 05:46 PM	#9
Golf cart guy Gone Wild Join Date: May 2015 Location: Central Florida Posts: 2,114	Re: batteries dead overnight All 6 batteries dead? You don't mention year, but on some years, if when you lock the hill brake, and the linkage is misadjusted, it will activate the solenoid and it will drain the batteries. If only the 2 batteries that power the lights are dead, and the voltage of those 2 batteries is near nothing, then something was left on.

Similar Threads
Thread	Forum
Batteries dead or charger dead	Electric Yamaha
Gas smell after sitting overnight	Gas EZGO
99 DS 48V, took it from running to non overnight	Electric Club Car
overnight Question for the true tekkies	Electric EZGO
club car batterys went dead overnight	Electric Club Car