[Frank Miller]

You need to understand how the charging system works. It is not a set and forget system. With the engine running and whatever accessories you need on there should be a 2 or 3 amp charge showing on the ammeter. If it is too high you boil the battery and too low you kill it. As someone said do not worry about volts. If you see 2 or 3 amps you have the right volts. If you are not able to get the ammeter to the positive side you may have a partial short if the generator is working correctly.