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Unread 05-21-2015, 12:37 PM   #1
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Default Charger coming on too soon

On Tuesday, I charged my cart and was getting help with the batteries and readings on here. Last night when I got home from work, the charger was on again... What makes the charger kick back on that soon? I have it unplugged now, afraid that I'll come home again tonight and it'll be on again! I don't feel like overcharging my brand new batteries I'm still trying to break in
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Unread 05-21-2015, 12:52 PM   #2
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Default Re: Charger coming on too soon

You probably know this - but I'll take a wild a** guess. Many people when installing a new pack have accidentally put the red charger lead from the charge port on the 5th battery in the series, not all 6 - its surprisingly easy to do. Five *new* batteries can actually be "overcharged" to the voltage of 6 (for a while)...but they can't hold the over-voltage for very long before falling back to more normal voltage. Once they do, the charger would likely come back on. I know this guess doesn't necessarily tie-in to your original battery voltage posting....but worth a good look just to eliminate this weird but common occurrence.

Otherwise, resetting OBC is the only other thought that comes to my (limited) mind.
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Unread 05-21-2015, 01:04 PM   #3
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here you can see the red wire going to the main positive post
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Unread 05-21-2015, 01:53 PM   #4
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Default Re: Charger coming on too soon

WOW - that's a HUGE picture - and yes, the charge wire looks fine...so now its about the OBC or charger. It won't hurt your batteries to reset OBC and try/test once more. Might have been a quirk.

The charger amps should drop to very low levels within 10 minutes after the reset, if you don't have a battery pack issue. Do you recall when you came home and found it charging, how many amps were showing at that time?
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Unread 05-21-2015, 01:57 PM   #5
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Quote:
Originally Posted by joesam View Post
WOW - that's a HUGE picture - and yes, the charge wire looks fine...so now its about the OBC or charger. It won't hurt your batteries to reset OBC and try/test once more. Might have been a quirk.

The charger amps should drop to very low levels within 10 minutes after the reset, if you don't have a battery pack issue. Do you recall when you came home and found it charging, how many amps were showing at that time?
The amps were at 4 on the charger whem I went to check on it last night. To reset OBC, I should unhook the main negative for 30 seconds and then put it back on?
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Unread 05-21-2015, 02:01 PM   #6
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Default Re: Charger coming on too soon

Make it at least 10 minutes to be sure - 30 seconds isn't enough for the capacitors to discharge.
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Unread 05-21-2015, 02:02 PM   #7
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Ok. So go unhook it for 10 mins, hook it back up and plug the charger back in and see what the amps do? Hopefully they are very low?
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Unread 05-21-2015, 02:06 PM   #8
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Default Re: Charger coming on too soon

That's the plan. Wait at least a couple hours when you plug it back in before checking the amps - they should be really low by then (say...2-3 amps) or better still; the charger will have shut off (here's hoping).
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Unread 05-21-2015, 02:28 PM   #9
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Quote:
Originally Posted by joesam View Post
That's the plan. Wait at least a couple hours when you plug it back in before checking the amps - they should be really low by then (say...2-3 amps) or better still; the charger will have shut off (here's hoping).
Ok, when I plugged the charger in, the orange light came on, charger went to 15 amps, to 0, then to 10. Now it's at about 6 amps. Ill come back out and see if its turned off before I go to work
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Unread 05-21-2015, 02:45 PM   #10
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Default Re: Charger coming on too soon

Quote:
the orange light came on, charger went to 15 amps, to 0, then to 10. Now it's at about 6 amps.
Sounds right so far - that's exactly how its supposed to work (except the orange light, but that is probably brought on by the reset).
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