As said before, a tender will add quite a bit of life. I like the Noco Genius tender/ maintainer.
What he said ^^^^^^^^^
Noco offers this eyelet that is attached to the battery
Simply plug in your Noco charger to the connector and keep 1 amp charger hoodked up
My Kawasaki Teryx battery is in a PIA location...so when the factory battery died last year (4 YO)
Connected the eyelet to new battery for easy breezy hook up....Noco is on it right now
Replacement came from the TSC
https://www.tractorsupply.com/tsc/product/traveller-u1-340-rider-mower-battery?cm_vc=-10005