Unable to charge batteries individually

Stretchtex1 · 04-03-2018, 01:49 AM

I have not been able to operate my 36 volt 2008 ezgo for 5 months after loaning it out to a work colleague. The voltage on each battery ranges between.08 and about 2.2. I have tried to hook up a 6 volt charger to each battery and they don’t receive any charge what so ever. Any suggestions?
I’ve used two different 6 volt chargers

Sideways · 04-03-2018, 05:49 AM

Have you tried charging 2 batteries at once with a 12volt charger?
I had some success starting with a slow charge.
Otherwise your batteries could be done.

meimk · 04-03-2018, 07:11 AM

Have you checked water? Cleaned terminals? If the 6 volt chargers you're using work, the batteries should get at least some charge. That low a starting point and amperage may be pretty minimal at first. Do you know if they've been that low long? You say it's been 5 months, if they've been near that low for that long they probably won't ever come back to nearly full charge, but if the power from the charger is getting through there should be at least something going back into the batteries.

Stretchtex1 · 04-03-2018, 09:23 AM

I will attempt to charge them in pairs
What setting on 6 amp charger?
6V 6A ?
12V 2A?
12V 6A?
Thanks

scottyb · 04-03-2018, 02:40 PM

Quote:

Originally Posted by Stretchtex1

I will attempt to charge them in pairs
What setting on 6 amp charger?
6V 6A ?
12V 2A?
12V 6A?
Thanks

All of that is too low... These batteries need a charge akin to a defibrillator.
Use a 10a or better a 20a charger and attach to a (+) terminal and (-) so that 2 batteries are between the charger connections, and these 2 batteries are connected (+) to (-).

cgtech · 04-03-2018, 02:46 PM

Also, be sure the charger you are using isn't one of those "automatic" ones that don't work on totally dead battery. Plug charger in, not connected to a battery and check clamps for voltage.

scottyb · 04-03-2018, 05:52 PM

Quote:

Originally Posted by cgtech

Also, be sure the charger you are using isn't one of those "automatic" ones that don't work on totally dead battery. Plug charger in, not connected to a battery and check clamps for voltage.

Yikes - Danger Will Robinson, Danger

Stretchtex1 · 04-03-2018, 07:31 PM

When I have a pair hooked up to 10 amp charger I’m getting a 14ish voltage reading but reading reduces to around 8 for the pair just as soon as I disconnect charger
Also ezgo smart charger flashes red 6 times now

Stretchtex1 · 04-03-2018, 07:34 PM

Charger jumped around and acted strangely on first pair.
Now acting smoothly on second pair

cgtech · 04-04-2018, 03:07 PM

Batteries seem to be FUBAR.

04-03-2018, 01:49 AM	#1
Stretchtex1 Not Yet Wild Join Date: Apr 2018 Posts: 4	Unable to charge batteries individually I have not been able to operate my 36 volt 2008 ezgo for 5 months after loaning it out to a work colleague. The voltage on each battery ranges between.08 and about 2.2. I have tried to hook up a 6 volt charger to each battery and they don’t receive any charge what so ever. Any suggestions? I’ve used two different 6 volt chargers
Stretchtex1 Not Yet Wild Join Date: Apr 2018 Posts: 4

04-03-2018, 07:11 AM	#3
meimk Gone Wild Join Date: Jun 2011 Location: Northern Indiana Posts: 2,821	Re: Unable to charge batteries individually Have you checked water? Cleaned terminals? If the 6 volt chargers you're using work, the batteries should get at least some charge. That low a starting point and amperage may be pretty minimal at first. Do you know if they've been that low long? You say it's been 5 months, if they've been near that low for that long they probably won't ever come back to nearly full charge, but if the power from the charger is getting through there should be at least something going back into the batteries.

04-03-2018, 09:23 AM	#4
Stretchtex1 Not Yet Wild Join Date: Apr 2018 Posts: 4	Re: Unable to charge batteries individually I will attempt to charge them in pairs What setting on 6 amp charger? 6V 6A ? 12V 2A? 12V 6A? Thanks
Stretchtex1 Not Yet Wild Join Date: Apr 2018 Posts: 4

04-03-2018, 02:46 PM	#6
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: Unable to charge batteries individually Also, be sure the charger you are using isn't one of those "automatic" ones that don't work on totally dead battery. Plug charger in, not connected to a battery and check clamps for voltage.

04-03-2018, 07:31 PM	#8
Stretchtex1 Not Yet Wild Join Date: Apr 2018 Posts: 4	Re: Unable to charge batteries individually When I have a pair hooked up to 10 amp charger I’m getting a 14ish voltage reading but reading reduces to around 8 for the pair just as soon as I disconnect charger Also ezgo smart charger flashes red 6 times now
Stretchtex1 Not Yet Wild Join Date: Apr 2018 Posts: 4

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04-03-2018, 07:34 PM	#9
Stretchtex1 Not Yet Wild Join Date: Apr 2018 Posts: 4	Re: Unable to charge batteries individually Charger jumped around and acted strangely on first pair. Now acting smoothly on second pair
Stretchtex1 Not Yet Wild Join Date: Apr 2018 Posts: 4

04-04-2018, 03:07 PM	#10
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: Unable to charge batteries individually Batteries seem to be FUBAR.

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