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Unread 05-25-2010, 06:59 PM   #1
Not Yet Wild
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Default Testing Pack, fried my Multimeter.

"03 CC DS 48v put my multimeter on it to test the pack, set on 200 DCV and it flamed it lol. I put the negative lead on the first battery negative and the positive lead on the last positive battery. With the motor wires off. Did I do it wrong?

I'm testing because the charger won't kick on, reason might be pack voltage to low or bad charger? Bad battery or inline fuse?

The Cart runs fine. Should I try individually charging each battery with a automotive type battery charger? I'm afraid to bypass the inline fuse in fear of frying something lol.

Those $40 repair kits for the charger is all that is needed? TIA!
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Unread 05-25-2010, 07:23 PM   #2
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Default Re: Testing Pack, fried my Multimeter.

Quote:
Originally Posted by bioevolve View Post
"03 CC DS 48v put my multimeter on it to test the pack, set on 200 DCV and it flamed it lol. I put the negative lead on the first battery negative and the positive lead on the last positive battery. With the motor wires off. Did I do it wrong?
You connected to the pack correctly (well, not really from your description, but you should have gotten a reading), but which sockets were the probes in on the multimeter?
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Unread 05-25-2010, 07:26 PM   #3
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Default Re: Testing Pack, fried my Multimeter.

if you can try your charger on another cart to see if it works, its very odd that it fried your volt meter you had to have done something??? or try another charger on your cart to se if it works, 1st you need to have at least 38 volts for your charger to come on if its a 48 volt cart chances are if you have enough voltage and charger won,t come on most cases its the OBC very rarely does the 3/8 inline fuse go bad........if you have to you can use a 12 volt charger to charge each battery just don,t leave the cart while doing so and only 20 minutes or so per battery.......by the way get another volt meter you,ll need it..............there is also a low voltage sensor in the charger that you can bypass and charger will work........if you can open charger and bypass relay plug charger in and charger for a a few hours than put relay back in order and try charger if it works your good to go if it stilol won,t charge i would lean right to the OBC but you really need to test voltage for each battery and load test them thats the 1st step............................if you get to where you can check voltage write #,s down and post them...........................................
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Unread 05-25-2010, 08:47 PM   #4
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Default Re: Testing Pack, fried my Multimeter.

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Originally Posted by shadowman View Post
if you can try your charger on another cart to see if it works, its very odd that it fried your volt meter you had to have done something??? or try another charger on your cart to se if it works, 1st you need to have at least 38 volts for your charger to come on if its a 48 volt cart chances are if you have enough voltage and charger won,t come on most cases its the OBC very rarely does the 3/8 inline fuse go bad........if you have to you can use a 12 volt charger to charge each battery just don,t leave the cart while doing so and only 20 minutes or so per battery.......by the way get another volt meter you,ll need it..............there is also a low voltage sensor in the charger that you can bypass and charger will work........if you can open charger and bypass relay plug charger in and charger for a a few hours than put relay back in order and try charger if it works your good to go if it stilol won,t charge i would lean right to the OBC but you really need to test voltage for each battery and load test them thats the 1st step............................if you get to where you can check voltage write #,s down and post them...........................................



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Unread 05-25-2010, 10:32 PM   #5
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Default Re: Testing Pack, fried my Multimeter.

Probes were in the right sockets, it's color coordinated lol. Black (neg) in com ground side, Red in red. It was a cheapo one from radio shack. Guess I'd better invest in a better one now.

Will try the charger on another cart first tomorrow, while charging the batteries separately, then checking each battery with a new multimeter that I will buy tomorrow.
Already had the charger apart cleaning contacts and re-seating all the connections and still a no go.
Fear of frying by doing the by-pass in charger, got to much money into this cart already.

Disclaimer understood lol.
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Unread 05-26-2010, 01:47 PM   #6
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Default Re: Testing Pack, fried my Multimeter.

If you truly smoked the meter then it's done but it's pretty hard to fry a meter that is set on volts. If anything you could have blown the internal fuse. Take the covers off and see if it's blown.
The price of the meter doesn't have much to do with it working properly, I use $150 Flukes and $5 Harbor Freights and they are both fine for golf carts.
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Unread 05-26-2010, 04:45 PM   #7
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Default Re: Testing Pack, fried my Multimeter.

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Originally Posted by dougmcp View Post
If you truly smoked the meter then it's done but it's pretty hard to fry a meter that is set on volts. If anything you could have blown the internal fuse. Take the covers off and see if it's blown.
The price of the meter doesn't have much to do with it working properly, I use $150 Flukes and $5 Harbor Freights and they are both fine for golf carts.
i agree with what was said above. most....probably all mutimeter have fuses to protect them and you from whatever it is that you did. make sure when you use your meter, expensive, or cheap, to have it on the right setting for what you are checking, and to have the prob plugged into the right inputs. also, check your meter to see what it's rated for. ie......don't use a meter rated for 600 volts and 600 amps on something that is higher.
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Unread 05-26-2010, 09:59 PM   #8
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Default Re: Testing Pack, fried my Multimeter.

This multimeter is fried, it's rated for 10amps lol. I didn't buy a new one today, but will get one with a higher amp rating.

Anyways tested the charger at the local cart shop and it works!
So I charged the batteries individually for 20 minutes at 6v 6amps, using my car charger.
Then hooked up the charger and it turned on!
Thanks for the help guys!!!!!!!
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Unread 05-26-2010, 10:13 PM   #9
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Default Re: Testing Pack, fried my Multimeter.

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Originally Posted by bioevolve View Post
This multimeter is fried, it's rated for 10amps lol.
Whoa, you generally don't use a multimeter to check amperage, you use it to check the voltage of the battery pack.
If you were trying to measure the amperage of the charger, the meter is limited to 10 amps and you blew the internal fuse.
I confused as to where you put the probes to damage the meter and what setting you had it on.
There are no hand held meters I know of that measure any more than about 10 DC amps without a shunt resistor attached as well.
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Unread 05-26-2010, 10:22 PM   #10
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Default Re: Testing Pack, fried my Multimeter.

I just tried to test the pack like mention in the OP and it just went poooff, smoked. I changed the fuse and battery in it and still didn't work. IT was set on to read 200vdc. Maybe just a bad MM, who knows, only paid $15 for it. I'll get a Digital one this time.
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