I have in my possession a good 160 amp battery that needs a good home I am in repair mode and updating my Walker H28 and a work college gave me this Calcium 160 amp battery I already have two and will not be charging any battery for a month of so before I finish rewiring my boat.
The Battery is 500 cm long by 200 wide and 200 high its in good order and its free just pick it up near Frankston if you would like it PM me for a start and we will go from there.
Id say with proper care this battery would last at least three years
Cheers