ronjon1944
Seaman Apprentice
- Joined
- Nov 6, 2003
- Messages
- 41
being my first year at boating with a merc i/o 3.0, I charge the battery before I go out(13+ volts). after the eng. warms up the volts drop to 12.2- 12.4. I thought that my alternator was going bad. A friend who has had many boats said unlike autos the alternator is only going to put out 12 volts and the eng. will start at 10+ volts. Not wanting to get stuck on the lake I did not use my fishfinder or radio.