Ditto- - - - -nothing makes a battery last a long time better than using it, regularly. I'd suggest starting the engine at least a couple of times a week, followed by a 30-minute run at fast idle to recharge it after starting. The maintainer will keep the battery from self-discharging and sulfating, but nothing beats a heavy discharge like a starter load to keep the cells capable of supplying the large amounts of current necessary for cranking. It's sort of like the difference in doing yoga for exercise, as opposed to doing a few reps of presses or squats with a heavy barbell. Both are technically "exercise", but they work different muscle groups.
Jerry
