Leisure Battery Charge Info

[whites75]

Hey team - so I have my 100ah leisure battery ready to use at this weekends Iceman series - just wondering how long they loose their charge once charged?

thinking of putting the battery on to charge on weds so I have time to spare and assuming it will take approx. 14hrs to charge but will it loose much charge as I aint using it until sunday - or shall I just charge it say Friday?
cheers