Odyssey Batteries are awsome group 31

http://www.odysseybatteries.com/

I like Optima batters, they have been a great battery for me and there one of the lightest out there. When I fish it's all day 8 hours fishing from lakes around me and some are 20,000 acre lakes to the Detroit River, LK Erie and never ran out of juice. I used my first set of group D34m and used them for 4 1/2 years, 70 days a season aleast & 8 hours a day that quite a few hour on though's battiers and I was still getting up to 6 hour out of them when I bought new ones last summer. I got the D27m this time littler bigger then the 34m, the 27 has more reserve. So I didn't think twice about buying Optima battiers again. I do have on board charger for all my battiers and they get plugged in right after I'm home or were ever I'm at staying.

I agree that Optima baatteries are the best on the market. I had one in a boat that I used in Nome, Alaska. I left the battery in the boat 4 winters with temps down to -40. The battery gave out after I moved to Washigton. Go figure...

The Optima batteries are the best I've ever found after trying several brands. Lightweight, charge quickly and go all day.  

I have been using Interstate batteries for over 30 years both Marine and Auto and have always had them outlast their warranty period. Long lasting and very durable. I am on my 4th season on the set in my boat. 2 deep cycle for my TM and a starting battery for my Verado and my electronics. I will never use anything else and they are a fraction of the cost of the Optima's

You cant beat a optima but interstate is a grat bang for your buck