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Unread 02-05-2009, 09:59 AM   #1
Gone Wild
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Default charger hangs on 2 amps

charger hanging on two amps some time s up at hunting camp it would still be on 2 amps the next morning still charging is that normal battery are trojan 875 made on k 06 in a 1995 cc 48 volt 700 controller upgrade cable to 4 ga. some times it shuts off like yesterday i moved it 20 feet or so just so i could charge battery completely cause wheater was going to be cold and i havent charged it fully in two or three days a guy at cart shop where i took it for him to load test it told me charger will run at least for two hours when you turn it on is that true? he failed to tell me he only had a 36 volt load tester so could he test my batteries properly with that
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Unread 02-05-2009, 10:17 AM   #2
nimda
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Default Re: charger hangs on 2 amps

Anytime you plug and unplug the charger it will run for at least a little while. The charger hanging on 2 amps for a long time might indicate a weak connection somewhere in the pack or possibly a battery that needs some attention. Load test EACH battery individually and CLEAN every connection on the pack real good and re-install. Take them off one at a time, clean it REAL GOOD. Check the water level in each battery and make sure they are full. Before charging fill the cell with water a little above the plates, after the charger shuts off then you can top them off. If you fill them all the way before charging the water/acid will boil out and get all over everything.
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Unread 02-05-2009, 11:11 AM   #3
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Default Re: charger hangs on 2 amps

so roady or anyone could he check my batteries properly on a 36 volt load tester he unhook one battery and tested 40 volts and tester other battery on a hand held load tester do i need to find a 48 volt load tester to take it to for it to be done right cause i think i have clean everything the only thing i havent checked was witha hydrometer in each cell will that tell me where the problem is or is that not a true test i heard the load test for 80 min. is the best test i think the batteries are made in 2006 in november is that right i read up on how to age batteries i thinking about going to 890 trojan before next hunting season is trojan the best battery to buy thanks
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Unread 02-05-2009, 12:13 PM   #4
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Default Re: charger hangs on 2 amps

I had the same problem and after a draw down test it was found that 2 batteries were bad. Since they are new batteries they were replaced with 2 new ones and the problem is gone.
Steve
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Unread 02-05-2009, 12:18 PM   #5
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Default Re: charger hangs on 2 amps

The hydrometer is an inexpensive and accurate test
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Unread 02-05-2009, 12:27 PM   #6
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Default Re: charger hangs on 2 amps

will go get a hydrometer now any suggestion on one to buy or noy to buy dude who did my load test told me i had two weak batteries not bad ones will it hurt for charger to stay on for max time on two amps
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Unread 02-05-2009, 02:07 PM   #7
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Default Re: charger hangs on 2 amps

I found when I had the problem that the batteries boiled a lot. I just disconnected the charger after what I thought was the right charge time.
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Unread 02-05-2009, 04:46 PM   #8
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Default Re: charger hangs on 2 amps

Welcome to the forum Stevesc3..............
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Unread 02-05-2009, 05:22 PM   #9
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Default Re: charger hangs on 2 amps

Quote:
Originally Posted by toogood4ubalius79 View Post
will go get a hydrometer now any suggestion on one to buy or noy to buy dude who did my load test told me i had two weak batteries not bad ones will it hurt for charger to stay on for max time on two amps
Continuing to charge the pack with two weak batteries will hurt the good ones. The charger continues to charge until the whole pack is brought to full charge voltage. This will also tend to boil out the good batteries as they will reach full charge sooner than the two bad ones thus actually over charging the good ones. A temporary work around would be to find two decent used batteries of approximately the same age until you need to replace the whole pack.
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Unread 02-05-2009, 05:24 PM   #10
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Default Re: charger hangs on 2 amps

Quote:
Originally Posted by Stevesc3 View Post
I found when I had the problem that the batteries boiled a lot. I just disconnected the charger after what I thought was the right charge time.
I'm sure that works but it is probably not best practice. If your charger doesn't shut off automatically, then there is a problem somewhere. Either in the charger or batteries/connections/cables. Not flaming, just adding my unsolicited .02.
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