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Unread 01-24-2016, 02:55 PM   #21
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Default Re: precedent battery, obc problem?

I am sure You already checked that the cart only has 1 pack negative cable and it goes through the OBC.

Is there anything else tapped directly Off the batteries like a DC converter?

If You leave the charger plugged to the cart, does the pack voltage gets to +60v?

If it does, measure the individual battery voltages when the pack is above +60v to see if all batteries are the same on any stand out below average.
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Unread 01-24-2016, 03:01 PM   #22
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Default Re: precedent battery, obc problem?

yes, only 1 wire on pack negative, and it does run through the obc.

Right now charger is at 6 amps, and voltage is 60.2.

Individual volts are :

10.15
10.10
10.13
10.12
10.13
10.10
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Unread 01-24-2016, 03:13 PM   #23
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Default Re: precedent battery, obc problem?

Those voltages look pretty good, the pack appears well balanced.

If the OBC wiring is correct and there is nothing draining the batteries, I would guess the OBC must be malfunctioning and not allowing the pack during charge to "absorb" all the energy that was used during the discharge cycle.
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Unread 01-24-2016, 03:24 PM   #24
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Default Re: precedent battery, obc problem?

there is some sort of reducer that someone installed up under the front end of the cart. How should i go about checking it ? Unhook it and let the batteries sit for a day then check voltage?

Once the charger cuts off, should i rehook the wires back as they were?
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Unread 01-24-2016, 06:37 PM   #25
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Default Re: precedent battery, obc problem?

charger has been running for about 3 hours at 6 amps and 60 volts. The volts have never climbed higher than 60. Is that right? I thought it should be about 63?
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Unread 01-24-2016, 06:53 PM   #26
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Default Re: precedent battery, obc problem?

63 is the equalization charge voltage.
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Unread 01-24-2016, 07:34 PM   #27
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Default Re: precedent battery, obc problem?

ok,i figured this was in that stage, since i charged 2 days ago, and have not tried driving it since, just clipped the charge recept black and grey to pack negative and plugged charger in about 4 hours ago, hasn't moved from 59/60 volts or from 6 amps.
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Unread 01-24-2016, 07:44 PM   #28
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Default Re: precedent battery, obc problem?

If I understood you correctly you have the OBC bypassed by connecting the charger neg to bat-. You know your charger won't shut off in that condition don't you.
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Unread 01-24-2016, 08:26 PM   #29
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Default Re: precedent battery, obc problem?

thanks, i was waiting for it to shut off.
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Unread 01-24-2016, 08:33 PM   #30
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Default Re: precedent battery, obc problem?

Now wait at least an hour preferably more and measure the pack voltage. Should be about 50.9.
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