Battery Charger advice

[red98]

I left the key in the ignition yesterday and when in doors thought, sod it, it won't get nicked, I'll risk it, what I didn't realise was I'd left the ignition on!  Came to use the bike for work this morning and flat as a pancake (quite obviously).

I don't need a flashy optimiser I ride the bike every day and this keeps the battery charged, I just need a battery charger to charge it back up, can I use a car charger (I think my Dad's got one in his garage) or does it have to be a special bike one?

Cheers

yes a car charged will do the job.....bump start it and take it for a long ride........much more fun