10+ years o Tuono ownership an it always fires up no matter how long its sat. My personal trick is to ensure its fully charged up on hibernation ( as in stick the charger on it for a while before chucking its blankie on).
Then do it once again mid winter. Also fire it up at least once and leave it sat running for a spell tae get some circulation and heat thru everything and drive the damp oot. Then shut it doon and leave it tae springtime. Seems tae work for me

......an ahm nae a fan o these trickle charger Optimate jobs, ye hear too many stories o folk wi them on and still endin up wi duff batteries and bikes that winnae start.
Reckon yer batteries finally given up the ghost though min.