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Old 04-06-2014, 02:09 PM   #1
Mini-Skoolie
 
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Dead battery

Hey guys, we are a couple of noobs doing our first conversion. Been busy lately and haven't started the bus in about a month. Went out today and the battery was dead. I've heard conflicting info about whether or not we can use our car to jump the bus. Searched and couldn't find any answers on the forum, so I apologize if this has been thoroughly covered. Any tips are greatly appreciated.

Also, is it a good idea to carry a portable charger, and if so what kind? Thanks.
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Old 04-06-2014, 03:30 PM   #2
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Re: Dead battery

1 battery, 2 batteries? 12v I am assuming? If its a school bus it would be 12v. You can use your car to jump start. Hook up to the battery that has the cable going to the starter. You should also learn to use the battery disconnect switch when you park the bus. First, incase something wants to short and cause a fire. Second, something in the bus might have a draw, which is causing the battery to drain.
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Old 04-06-2014, 04:39 PM   #3
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Re: Dead battery

2 batteries!
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Old 04-06-2014, 04:59 PM   #4
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Re: Dead battery

Quote:
Originally Posted by opus
You should also learn to use the battery disconnect switch when you park the bus.

Do all models and manufacturers have this? If so, how would I find it??
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Old 04-06-2014, 05:30 PM   #5
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Re: Dead battery

First, what do you have for a bus? Once you tell what bus/engine/configuration you have, we can go from there. Most buses have a switch. All it does is removes the ground.
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Old 04-06-2014, 08:39 PM   #6
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Re: Dead battery

Sorry to hi jack your thread....... thomas mvp (re) cat 3126. Pm me the answer?
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Old 04-06-2014, 08:58 PM   #7
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Re: Dead battery

I'm not sure on a Thomas, but it should be by the batteries. Mine is a Blue Bird and on the frame rail in the engine compartment.

Follow your ground cable form the batteries and see if it takes you to one.
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Old 04-12-2014, 11:03 PM   #8
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Re: Dead battery

Hey thanks for responding. I've been away for a bit, but will try starting it with the car tomorrow.

For emergencies we plan to get a charger like the Black and Decker--however that model is discontinued. What kind of specs should we look for when we buy a new one?

Would one of these work?

http://www.walmart.com/ip/Schumacher-Sp ... ethod=p13n

http://www.walmart.com/ip/Diehard-80-20 ... ethod=p13n
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Old 04-14-2014, 07:03 PM   #9
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Re: Dead battery

As far as trying to save the battery is concerned, it would probably be best to get a battery charger from walmart, such as the one listed above, set it to its 2 amp charge setting and let it charge plugged into the charger for a day or two, or until it says the battery is fully charged,
This assumes 12v is the right voltage,

If a battery is showing 12.2 volts or less when it is not plugged into anything it is probably toast, so a multimeter test might help speed the process. Regardless of what the meter says, make sure it is properly topped of with distilled water and give it a day or two plugged into a charger,
Once it is charged, unplug the battery and let it sit for 12 hours, then test it again with a multimeter, it should be at least 12.6 volts for most batteries, 12.4 or 12.5 means it has some damage, less than 12.4 and less and you need a new one
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Old 04-15-2014, 05:32 AM   #10
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Re: Dead battery

Quote:
Originally Posted by Docsgsxr
Quote:
Originally Posted by opus
You should also learn to use the battery disconnect switch when you park the bus.

Do all models and manufacturers have this? If so, how would I find it??
I am curious about this too! I have a 1992 Bluebird TC2000. I was going to wire one in myself, but that would be awesome to know if there is one already there. What am I looking for? Any pics?
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