"Peter Bennett" wrote in message
news.com...
If you have a voltmeter, you can easily check by measuring the battery
voltage - with the engine stopped, the voltage will be 12.6 - 13
volts. With the engine running fast enough to charge, the voltage
will rise, probably to a little over 14 volts.

I may do that next time I head out. Kind of hard holding two leads on
the battery while the boat is cooking along at a good speed wand
bouncing with the waves. If I had a passenger that would be easy. I
could tape or secure the leads to the posts.....

I asked as I was curious if anyone knew the design of them as to whether
it's just enough to charge or they're designed to meet all your needs
while out running.
John