I never got more than 18 months out of an 85ah leisure battery. I would expect more from a 110ah though.
why not buy an optimate 4 battry charger there all singing all dancing brings battrys from the dead that normal chargers dont igot one had got 2 battries back to life .they are not cheep but worth it {he who buys cheep buys twice}lol got mine new off evilbaygood luck. ; dave f