02 DS, Batteries left uncharged

3Ds · 10-30-2015, 10:42 AM

Purchased an 02 DS that had batteries replaced Oct of 2014. (6-8v Trojan T875's)
Problem is they were left uncharged over the summer.
I checked the combined voltage to be 15.73.
After bypassing the sense relay in the charger, it hums but no amps show on the meter.
I left it plugged in overnight and the voltage is up to 20.6.
Is there any hope for these or are they toast?
Any tips or tricks to get them to take a charge?
Thanks for any advise.

SouthCo · 10-30-2015, 11:06 AM

Are you sure charger is good? I'm assuming you checked the water levels. Maybe try disconnecting batteries and charging them individually with a different charger?

scooterman · 10-30-2015, 02:49 PM

you may want to do as mentioned above, probably your bet hope.

3Ds · 10-31-2015, 11:26 AM

I isolated the batteries and brought them all up over 6 volts with a manual 12v charger. I then hooked them back up and the charger works.
I left it plugged in overnight and the charger was off this morning.
They tested at 48 volts. I re inserted the charger and it is going again now.
I hope a few cycles might work to bring them back.

scottyb · 10-31-2015, 12:13 PM

Quote:

Originally Posted by 3Ds

I isolated the batteries and brought them all up over 6 volts with a manual 12v charger. I then hooked them back up and the charger works.
I left it plugged in overnight and the charger was off this morning.
They tested at 48 volts. I re inserted the charger and it is going again now.
I hope a few cycles might work to bring them back.

Batteries suffer irreversible damage when left below 50% charge for extended periods of time. You may get a voltage reading near usable numbers (48v is 50% recharged) but the amperage storage capacity is diminished. The result will be poor performance and short run time. Look to replace this pack soon.

10-30-2015, 10:42 AM	#1
3Ds Not Yet Wild Join Date: Jun 2015 Posts: 4	02 DS, Batteries left uncharged Purchased an 02 DS that had batteries replaced Oct of 2014. (6-8v Trojan T875's) Problem is they were left uncharged over the summer. I checked the combined voltage to be 15.73. After bypassing the sense relay in the charger, it hums but no amps show on the meter. I left it plugged in overnight and the voltage is up to 20.6. Is there any hope for these or are they toast? Any tips or tricks to get them to take a charge? Thanks for any advise.
3Ds Not Yet Wild Join Date: Jun 2015 Posts: 4

10-30-2015, 02:49 PM	#3
scooterman Gone Wild Join Date: Jan 2014 Location: Lafayette, Louisiana Posts: 1,677	Re: 02 DS, Batteries left uncharged you may want to do as mentioned above, probably your bet hope.

10-31-2015, 11:26 AM	#4
3Ds Not Yet Wild Join Date: Jun 2015 Posts: 4	Re: 02 DS, Batteries left uncharged I isolated the batteries and brought them all up over 6 volts with a manual 12v charger. I then hooked them back up and the charger works. I left it plugged in overnight and the charger was off this morning. They tested at 48 volts. I re inserted the charger and it is going again now. I hope a few cycles might work to bring them back.
3Ds Not Yet Wild Join Date: Jun 2015 Posts: 4

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Forum
charging batteries left in the woods- how long to leave them on	Electric EZGO
How much life left in my batteries?	Electric EZGO
95 EZ Go wire left over	Electric EZGO
Some life left in these batteries?	Electric Club Car
89 EZ go gas key left on	Gas EZGO

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

10-30-2015, 11:06 AM	#2
SouthCo Gone Wild Join Date: Sep 2009 Location: Maryland Posts: 569	Are you sure charger is good? I'm assuming you checked the water levels. Maybe try disconnecting batteries and charging them individually with a different charger?