Question about 2006 Suzuki GSF 1200 Bandit

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Should I be getting a reading, of 12.78 DC Current when the engine is not running and 14.5 DC current when the engine is running, when I test for voltage between the + terminal on the battery and anywhere on the frame or the handle bars of my motorbike? I am getting shocks from my bike whilst I?m on it.

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Those readings sound fairly good for the battery and (when running) the charging system but im surprised if youre getting shocks from those dc voltages. check ht leads from coils for possible current conduction which may be causing the problem you have. also check all earth connections and consider fitting ground earthing strap similar to those used on cars

Posted on Jul 31, 2010

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How to check charging system


You will need a volt meter, a cheap one is fine, mine was free at a parking lot sale. Set the volt meter to DC Volt, if it gives you choices pick 20 volt. Hook it to the battery see what your readings are should be some where around 11.5 to 12.3, now start the engine ,run at high RPM . Did the voltage go up ? If it went down it is not charging, It should have went up to 13.8 and as high as 15 volt , this settles back down to 13.8 as the battery charges up. Did your rectifier have three in a row flat spades ? If so unplug the three wire plastic holder, the two outside wires on this plug are from under the flywheel, ATTENTION this current will be AC not DC current so set you volt meter to AC ,engine running fast, ground your meter to the engine and check for voltage on the two outside wires on the plug,one at a time, should be 18 volt AC or around on each wire, if so your stator is working . The center wire on the plug is DC . When plugged into the rectifier the two AC currents go through diodes which change it back to DC current and also there is a regulator inside the rectifier that controls the amount of DC Voltage. So follow the middle wire and test it ,I think it goes to the charging meter on dash .

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2001 Ford expedition Location AND # of alternator field fuse and alternator mega fuse and any other fuse and relay that has to do with the charging system. Thank you!


Lisa I'M sorry to say their isn't any fuse or fuses that can correct problems with our alterator.Their is what is called a fuseable line witch is basicaly reistance wire that will burn out if over loaded .However you would have nothing even with a new battery NO CRANKING.
The ALT .uses diodes it is AC alternating currant unlike DC direct current..The diodes olny allow the currant to flow in 1 derection and uses a voltage regulator to allow the systems that are DC the battery to charge and at the same time other systems that run on AC voltage to work as well .
Your best bet is to talk it to somebody who you trust and test what you get at the battery with the vehicle running if it reads 14 volts at the top of the battery DC then the ALT IS GOOD , Check the BAT , at this point with the NEGITIVE cable off the BAT. It should read at least 12 volts DC on a 20 volt Dc scale.
But likely it is the alternator

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Let just wait a minute. You have an inverter that is rated at 4500 watts. This spooky. The inverter has a three phase input/three phase output? What is the inverter going to be used for?

Next question. What type of batteries are you using and what is the voltage/current in series or parallel? What will be the total voltage you will producing with the batteries? What is the total current of the batteries.

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You also don't have a regulation circuit to limit the amount of current depending on the needs of the batteries. Also, you don't have a trickle charger to keep the batteries fully charge when the batteries are idle.

You will also need DC regulated charger that will keep the voltage 2-4 volts above you battery voltage. Without this voltage above the batteries voltage it will not charge those batters. Batteries need to forced to except a charge that why voltage above the source voltage. If you can check the voltage on your car/truck with a 12 volt system. While engine is running the voltage across the battery will be 13.8 to 14.1 volts. Now, the current limiter is the alternator it has a regulator built into it for stabiizing voltage and current went the batteries require more current but it limited by alternator regulator
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You need to rethink everything here. Also, I can help you if you supply the needed information.
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1 Answer

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