07-21-2014, 09:09 AM | #1 |
Getting Wild
Join Date: Aug 2011
Location: Lavaca County, TX
Posts: 78
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Charger problem
I recently bought a 1991 DS 36V with no batteries. I have a good used set that I put in and it does run. An ACCU POWER Automatic Charger came with it. I plugged it in yesterday afternoon and it came up to 23-25 amps. The batteries were not discharged much so I expected to come out this morning and it would be fully charged and cut off or down to 4-5 amps at most. It was at 15 amps and the batteries were pretty warm and has been bubbling and venting. I cut it off and the Voltage measured 38.9 volts.
The charger appears to work like it should except that it is not tapering/cutting off the charge. Any ideas from the experts? Thanks in advance for your help. Paul |
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07-21-2014, 09:32 AM | #2 |
Old Sky Soldier
Join Date: Dec 2011
Location: Kentucky
Posts: 3,881
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Re: Charger problem
Do the batteries hold voltage after being off charger for 12 hours?
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07-21-2014, 09:59 AM | #3 |
Getting Wild
Join Date: Aug 2011
Location: Lavaca County, TX
Posts: 78
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Re: Charger problem
They were at 37.8 before I put them in and ran it about a mile.
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07-21-2014, 10:12 AM | #4 |
Guest
Posts: n/a
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Re: Charger problem
here is trouble shooting guide and pdf fie of manual
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07-21-2014, 04:23 PM | #5 |
Getting Wild
Join Date: Aug 2011
Location: Lavaca County, TX
Posts: 78
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Re: Charger problem
CTD -
Thanks for the info. I'm pretty limited on chargers but it looks like #8 is the one I need to be looking at. These batteries were in my wife's EZGO and have always been charged with the digital EZGO charger. They usually are at 37.5 - 37.9V 12 hours after they were charged. I have 2 questions. 1) Would the charger still be at 15 amps after 12-14 hours with this battery pack? 2) Would the timer affect the number of amps and not tapering after quite a few hours of charging or does it only cut off the timer after so many hours of charging? Thanks again. |
07-21-2014, 04:37 PM | #6 |
Guest
Posts: n/a
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Re: Charger problem
1) yes ... a fully charged pack (36v) is 38.3v after 12hrs rest
here is a chat to show at rest volts so your old batteries are at 70% of full charge, and not showing enough volts to shut off charger and it keeps trying but won't shut off 2) charger has a 16hr shut off controlled by timer, the relay controls the amps |
07-21-2014, 05:02 PM | #7 |
Old Sky Soldier
Join Date: Dec 2011
Location: Kentucky
Posts: 3,881
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Re: Charger problem
You cut the charger off and the voltage was 38.9, seems I read somewhere it should get to 42 or so on a 36 volt pack. Like a 48 volt will get up to about 63 volts. Just things to think about.
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07-21-2014, 05:11 PM | #8 |
Getting Wild
Join Date: Aug 2011
Location: Lavaca County, TX
Posts: 78
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Re: Charger problem
CTD,
OK So, even if the voltage was 38.9 volts when I took them off the charger, the charger would still be going at 15 amps? According to your chart, my old batteries are 80-90% after a 12 hour rest. At what point would the charger start tapering the charge or cut off the charger completely? Is there a maximum number of hours it will charge regardless of battery charge or will it cut off automatically after a set number of hours? Sorry for all the questions but this is a brave new world for me and I'm trying to make sense of it all. If my batteries are 80-90% best case scenario, will this charger never work properly (taper and cut off) ? If it is always going to keep charging at least 12-15 amps with less than 100% batteries, what is the best way to charge these batteries to their max? Thanks again. |
07-21-2014, 07:54 PM | #9 | |||||||
Guest
Posts: n/a
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Re: Charger problem
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we need a log 1) pack voltage 2) each battery take a readings (1&2) now, log it fill batteries with water run cart around a little , 15min or so take readings(1&2) log it plug cart in take reading (1) log it let charger run take reading and log (1) at 6hr, 10hr & 16 hr mark (set timers or alarm) if charger is at 44.5+v at 16h mark unplug charger if charger is less than 44v let it run another 2 hours or until it is above 44v take readings (1&2) log it wait 12hrs take readings 1&2 post your results here |
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07-21-2014, 08:36 PM | #10 |
Getting Wild
Join Date: Aug 2011
Location: Lavaca County, TX
Posts: 78
|
Re: Charger problem
CTD,
Will do. I just checked the pack after 12 hours off charger and it is at 37.7V. Four of the batteries (Trojan T105) are between 6.24 & 6.28V. One is at 6.34V and one is at 6.17. I'll check again in the morning and start the process. Thanks for all your help. Paul |
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