Hi, sounds like a fun boat! If you use 2 six volt batteries instead of 1 12 volt battery, you will get more amps which will mean more range. The Group 27 refers to its size, which is about 12"long. A group 24 is shorter, I think the width and height are the same. I am not familiar with a group 34 specifically. A lot of guys use in the EV world use Optima batteries, and seem to like them. At the risk of over simplifying, look more more amps when looking for a battery, at the 20 hr. rating. Good luck!
Fred Liesegang
"Eagle"
From: Sebastien Bolot <sebastien@corse-concept.com>
To: electricboats@yahoogroups.com
Sent: Sunday, September 8, 2013 7:21 PM
Subject: Re: [Electric Boats] Battery selection
To: electricboats@yahoogroups.com
Sent: Sunday, September 8, 2013 7:21 PM
Subject: Re: [Electric Boats] Battery selection
Le 8 sept. 2013 23:03, <dellmort@yahoo.com> a écrit :
I recently purchased a nice 14 ' English built fiberglass sailboat weighing perhaps 300 lb. and a 50 lb. thrust Minnkota trolling motor. Please comment on having 2 smaller marine batteries as opposed to 1 larger battery. Also, I am seeing references to Group 34 batteries and Group 27 batteries. What does "Group" mean? Also, I would appreciate comments about the Optima blue top line of batteries. I am not going to be sailing the boat but rather puttering around on the small lakes here in central Colorado. Most of the lakes here are reservoirs for all kinds of uses, including drinking water, so most prohibit gasoline outboard motors. Thanks, Dell
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