Hi, I was hoping someone could help. Excuse the length, I thought thought more detail may provide an easier diagnosis. I've had this '73 csi for six months and replaced the battery just after I bought it. Everything was dandy until about three months ago I went away for two weeks and returned to find the battery completely dead without explanation. The service mobile guy started the car off his battery and then suggested I take a long drive to charge the battery. I drove for about an hour, turned the car off after which it failed to restart. The small amont of charge couldn't start the engine and could barely power the hazard lights. A mechanic across the road looked at it, said the alternator was fine, but the relatively new battery was faulty (he said it wouldn't accept charge from the alternator) and must be replaced. My regular mechanic sent over a replacement and everything was great until about two weeks later I put the headlights on whilst idling and the engine revs fell and then stalled. It restarted, but idled unevenly and would stall without revving. I recharged the battery and everything was cool until a week or two later and again the same problem. So, I'm just recharging it regularly which is a pain. I don't have any equipment to check things. Could it be anthing else other than the alternator? Cheers, Matt