Battery charger with the big motor?

I have heard of charging your trolling batteries with a device while the big motor is running. Can anyone validate this rumor and/or tell me the name of this. I would like to invest. Thank you.

Here’s a little something, rootski had a thread about this earlier this year in teh outdoorgear forum too.

http://www.in-fisherman.com/magazine/articles/IF2704_rigging_recharge_1/index1.html

I believe this http://www.yandina.com/trollinfo.htm is a system that will let you do it too.

Hope that helps

Based on what I found I discarded the idea. It would take a lot of running with the big motor to charge the trolling motor battery very much. When i’m out fishing I run the big motor for a little bit and then shut it off, drop the trolling motor in the water, and fish for a long time. It just didn’t seem to be worth the extra complexity and expense. Put it this way, it’s a lot cheaper and easier to buy an extra battery and bring that along.

Rootski