Amazon.com: VMAX MR127 12 Volt 100Ah AGM Deep Cycle Maintenance Free Battery compatible with boats and 40-100lb, minnkota, cobra, sevylor and other trolling motor (GROUP 27 Marine Deep Cycle AGM Battery) :
Storing boat batteries in the winter at Batteries Plus
AGM Battery Maintenance - Make your sealed lead acid battery last longer!
Deep Cycle Battery Maintenance: How to Get the Most Out of Your Battery - RB Battery
Centennial Marine Deep Cycle Battery DC24MF Group 24 Maintenance Free