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Unread 08-30-2014, 04:50 PM   #1
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Join Date: Oct 2011
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Default Another "power drive 2 charger not shutting off"

02 Club Car ds 48v cart
Charger is not shutting off after 16 hours of continuous charging
When I plug end into cart charger waits about 10 seconds or so, clicks, hums, and amp meter jumps to 8 amps. It trickles down over this long 17 hour period and hangs at about 4 amps and will not shut off. Here are my voltage readings.
Pack voltage on charge after 17 hours. Charger @ 4 amps
61.2 volts
Batt 1-- 10.29v neg lead
Batt 2-- 10.46v new batt
Batt 3-- 9.98v
Batt 4-- 10.11v
Batt 5-- 10.06v
Batt 6-- 10.13v pos lead

30 minutes after charging
Pack -- 53.2v
Batt 1-- 8.90v neg lead
Batt 2-- 8.81v new batt
Batt 3-- 8.79v
Batt 4-- 8.85v
Batt 5-- 8.89v
Batt 6-- 8.88v pos lead

1 hour after charging
Pack -- 52.6 v
Batt 1-- 8.82v neg lead
Batt 2-- 8.69v new batt
Batt 3-- 8.74v
Batt 4-- 8.77v
Batt 5-- 8.81v
Batt 6-- 8.81v

Battery #2 in my list has been replaced with same brand of battery because the old one ended up with a dead cell. The original ones are only 1 1/2 years old and have been maintained well with only distiller water. I've also tried resetting the obc but still hasn't changed.
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Unread 08-30-2014, 04:59 PM   #2
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Default Re: Another "power drive 2 charger not shutting off"

I know the more knowledgable guys will want to know the readings after 12 hours off charger. From what I remember your voltage may not be reaching cut off voltage for the system.
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Unread 08-30-2014, 05:10 PM   #3
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Default Re: Another "power drive 2 charger not shutting off"

Well in that case I still have 10 hours to wait to get the 12 hours off charger reading which puts me at about 2 am.😴
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Unread 08-30-2014, 08:43 PM   #4
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Default Re: Another "power drive 2 charger not shutting off"

I don't think you need to wait up until 2am. Just check them in the morning. I think the thing is to wait at least 12 hours. That allows the surface charge to bleed off.
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Unread 08-30-2014, 10:31 PM   #5
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Default Re: Another "power drive 2 charger not shutting off"

Will do. I was seriously thinking about setting my alarm. I will check in the morn.
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Unread 08-31-2014, 09:40 AM   #6
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Default Re: Another "power drive 2 charger not shutting off"

About 18 hours off charge
Pack 52.08v
Batt 1-- 8.74v neg lead
Batt 2-- 8.56v new batt
Batt 3-- 8.67v
Batt 4-- 8.69v
Batt 5-- 8.70v
Batt 6-- 8.72v pos lead
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Unread 08-31-2014, 10:48 AM   #7
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Default Re: Another "power drive 2 charger not shutting off"

Those are great readings IMO, is the main neg going through the obc? Is it the only main neg, or do you also have a bypass cable on the neg. if not there must be something wrong with the obc. It tells the charger when to turn off. I'm just guessing from what I have read on this site. Hopefully someone who really knows will jump in.
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Unread 08-31-2014, 11:15 AM   #8
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Default Re: Another "power drive 2 charger not shutting off"

Yes the main negative lead passes thru the obc but I will triple check to be sure. The only other negative wire on the whole battery system is the new digital lcd volt meter that I mounted on the dash for measuring pack voltage, so the kids know when to put it back on charge. This has been going on since before I installed this gauge though.
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Unread 08-31-2014, 12:47 PM   #9
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Default Re: Another "power drive 2 charger not shutting off"

Just checked again. Yes it does
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Unread 08-31-2014, 02:09 PM   #10
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Default Re: Another "power drive 2 charger not shutting off"

Also wanted to note that I haven't seen my battery warning light turn on in a very long time
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