I hooked up my maintenence free battery to a 1.5 amp charger and there is a quiet sizzling noise coming from the battery when you listen really close. Does anyone know what this could be? Merry Christmas .

 

If it's a maintenance free battery this may be normal or you may have a couple dry cells if it's an older battery.Really best to load test the battery to see what condition it's in.Even a new one out of the box can be bad.I had stacks of them at work. Some people would even pull the sealed cell strip off and add distilled water to cells,but usually only a temporary improvement if any. Also when you get the machine running check charging at the battery. Should be between 14-14.5 volts. If lower or higher voltage is shown,usually a regulator problem causing this. Plus for general charging,keeping the battery charged, a floating maintainer is better than using a standard battery charger.

 

inhave it on a trickle charger

 

I think what OPT is saying, the voltage regulator of your bike could be the problem. If it's overcharging, the battery will have a short life.