sounds like the cells in the battery have gone try a new battery. Otherwise the alternator is not properly wired to the car. Most alternators boil the battery before they die anyway. It may be 12 volts but ampage will be rubbish. Did you replace the regulator too? Its the voltage regulator on the alternator. If you are sure the alternator is working OK it should be pushing maybe 13v to the battery then when fully charged it drops to 11v If the battery is cream crackered then it won't be able to charge properly anyway. Hence the battery dies straight away. -hope this helps-Darron
Darron Nixon
October 2006