ok, so i go to walk out of work tonight, get to my bike and discover that for some god unknown reason i decided to leave the key in with the ignition on when i got back from lunch :? result: completely flat battery :| manage to roll start her and take off home. not before long i notice i have no indicators nor instrument lights - fair enough i think. then the VTR starts doing weird stuff - spluttering when i'm stopped at lights and backfiring i manage to get to MCAs on elizabeth where i turn her off and see if the battery has charged at all... nothing. i buy a new battery and trickle charger. throw the new battery on, just manage to turn her over and away i go - all seems fine, got all electrics going and she sounds sweeter than ever. now i'm at home with the battery on the charger my question is: was the spluttering/backfiring somehow due to having absolutely no charge in the battery? as i said she was fine once the new one was in and when i got home i turned her off and then tested if she would turn over (which she did). i know it definitely had nothing to do with fuel - i filled up 2 days ago and all has been fine. thanks in advance guys.