Battery question

[blams2004]

The battery in my TT is five years old and I have noticed it does not hold a charge as well anymore. I didnt really worry about this because most of our trips have been full hookups, and the ones that werent were on the short side like 2 or three days. This year all of our trips will be dry camping and several days at a time. I wanted to replace the battery but wasnt really sure what to look for in a battery. Any help is greatly appreciated. Cheers, Blams.

[Shadow_Catcher]

Get a true deep cycle and not a marine deep cycle, of what ever type. http://www.solar-electric.com/deep-cycle-battery-faq.html will help with the decision process. I went with a 150AH Lifeline AGM, no maintenance (adding water)and high input (I am feeding from a large solar panel).