Generator Batteries that will not charge

Did you know you have two alternators on your generator? Behind the flywheel of your engine is a smaller alternator. It is called the "Flywheel Generator" The Flywheel Generators are used to produce power necessary to charge the starter battery. This little generator should not be confused with the much larger alternator that the engine is connected too. The flywheel generator produces AC voltage that must be converted to DC in order to be used as a battery charger. A very simple 12 volt regulator is used. It has cooling fins on it and is mounted to the engine block.

 

  You should have a fuse connected between the output of the regulator and the starter battery terminal. This is the first place you should look if you have a charging problem. The regulator is easily overloaded when the generator is forced to charge a dead or damaged battery. Overloading will result in either a blown fuse or damaged regulator. You can also damage it by boosting your battery or jumping it from your car for example. If you need to charge your battery then remove it from your generator first. The same precautions should be used when charging or boosting a car battery. The good thing it replacement of the regulator is easy. Two wires go to the flywheel generator , a ground wire if present goes the the case of the regulator or engine block and the one remaining red wire goes to the starter battery terminal. It is just a matter of removing two bolts that mount it to the size of the engine and unplugging it.

 

If you feel you have damaged the 12 volt regulator you can purchase a new one. Unplug the old and plug in the new.

The cost is $49.00 plus shipping to Canada and USA only. ( It is not covered under warranty ) Click Here To Buy Now

You can read more about charging and extending the life of your battery here.