On Wed, 26 Dec 2007 20:21:41 -0500, HK wrote:

Just charged up all of my boat batteries. Each battery took under a
minute to get to "FUL" on the charger. This is something to do once a
month, unless you have one of those reliable, low output, always
connected chargers.

Once a month is overkill in my experience. If the batteries are in
good condition, fully charged at winterization, and totally
disconnected from all loads, they will start right up in the spring.