I started my lexus IS200 yesterday morning and the battery was dead so I took the battery to the garage where the kind my re-charged it for me and then said "why don't you come back with your car once you fitted the battery and i will check your alternator" so am thinking oh thats nice of him so i went back and he took out some old electrical tester and he tested the battery and he cam to the conculsion that the Alternator is not re-charging the battery and it only does when i give it loads of gas. He quotes me £300+vat for a new one and then £180 for a re-condition one.... wow that is a lot of money so I said to him i will let him know. Is there anyway of finding out that the problem is with the Alternator or the Battery? All commnets and views welcomed please