I'll check my battery tomorrow and make sure it's pulling enough, anything under 10 means the battery is kaput, but I won't rush into buying a new battery until I've tested it.
The bike is now in charge outside and I'll leave it on all night, turned it on after an hour and the bike started first time but only once, I reckon that cheap charger I'm using with the optimate cable may be doing more bad than good! Ordered an optimate charger now too.
Fair point, I have heard of some chargers going to the dark side and killing batteries.
Problem is if it is the charger it could have now killed the battery too