Mercury 150 Optimax problem?

[rufishin]

Anthony or anyone.
I think there was a thread about this, but I cannot find it.
Anyways, I have a 2006 Mercury 150 Optimax. When I went out today the motor ran just fine. I went from spot to spot fishing. ;D Then as I was leaving one area, as I pushed the throttle forward the motor bogged down / rpm lag and the alarm went off. I am sure this is a built in safety feature. I pulled the throttle back to idle and slowly tried it again, same thing. The good part it let me idle back to the dock, which wasn't very far. Right before I got back to the dock I tried to get up on plane one last time, this time everything worked fine, no throttle back / rpm lag. Water pressure was good. I did notice that the voltage gauge seemed to be a bit lower than normal, right at 12 volts, usually it’s higher.
Should I have someone look at it or not? Any suggestions?
Thanks Rich

[5 BASS LIMIT]

You might want to check your alternator belt and make sure it is not stretched and if the motor sees less than 11.5 volts you will get a horn. Another thing is spark plugs could be fouled and need to be changed.

[rufishin]

Thanks Anthony
If the voltage is low would that cause the motor to rev limit on acceleration like it did today? I have had a funny feeling about the battery. Could this be a possible cause?