On Sunday morning went out to the car 1.75 tbi, the battery was flat, starter struggled to turn over then stopped altogether, jump started the car and took it for a drive. All seemed ok then today the car was sitting idle with the engine on for around 10 mins, stereo cut out, battery warning light, airbag faults message, traction control etc, drove off and one over say 20mph, everything was fine again, but each time I came slowed for a give way etc everything started to flash again. When i got home i turned the car off, restarted ok, no warnings. I was hoping it was just the battery but now thinking may be the alternator, any ideas/experience with this?? Going to see local Indy tomorrow..