Re: Do I need a battery charger?
You have a choice of how you want to learn about this stuff. Everybody learns differently. Some will ask questions on the internet. Others will buy books. Some can use the internet with searching. I've found the West Advisors online or in their catalogs are a very good point to start.
The West Advisor: West Advisor Articles
Scroll down to electrical.
You could also start here:
Electrical Systems 101 Electrical Systems 101
Your best bet on a mooring is solar.
Stu Jackson, C34, 1986, M25 engine, Rocna 10 (22#)