Just wondering how everyone looks after their batteries?  We have two trickle chargers that we move about the garage infrequently however we only get three to four years of each battery.
Is that normal?  I realize on recreational vehicles they often are ignored for weeks or more.
Just thought I would toss it our there as June and I seem to be always replacing batteries whereas in our cars they seem to go forever.

I do better than that John.  Six to seven years.  I also put a battery tender on them.  I switch up every few days, but right now I only have three to worry about.  I also pull the batteries every fall.

The AGM batteries I put in my Zs lasted many years without a battery tender. 

I plug in my bikes every time I park them to wall warts controlled by a timer. An hour a day keeps them topped up, even with the memory draws on the electronic dash of the Goldwing.

If my machines sit idle for several weeks, I put a trickle charger on them for a day or so each week.  Bike batteries are NOT long lasting I've found. BUT in the case of my Burgman 650, a new battery when I bought it in '12, and it wasn't replaced until start of season in 2019.  That one is still going strong, with trickles every now and then. Just make sure the posts are cleaned occasionally.

My experience as well.  Regularly get 7 or 8 years out of a quality AGM and never used a battery tender.

Yeah, 6-7 years with 12 volt, 3-4 years with 6  volt, with Battery Tender attention now and then.