If the battery is at full charge and the rectifier is working properly than you will not see much of a voltage change however if the batt is down you should read 13.8 to 14 volts. As Olderthan stated check the rectifier first. Another common thing on our buggies is if they sit awhile the battery will discharge, I have found on many buggies that there is a slight draw on the battery this could be due to a faulty diod in the stater if there even is one since I have found draws even on new buggies. The diod prevents the backflow of current when engine is in the off position. I am installing battery disconnects on my buggies so as not to have to keep a charger on when not in use. All automotive systems have this diod in their charging systems to keep from drainning the battery when not in use. I suspect the chinese do not install these diods since this is a commom problem which has plauged our buggies for as long as I have been in the business. TOM
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