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Michael
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2,549 Posts
Have to say that these cars need to be driven regularly, they don;t do well on very low mileage and long periods between use, mostly due to electronics and battery issues. Even if the battery was new 7-8 months ago with little or no use you could well have fully discharged it hence the time taken to recharge. Have you checked the battery condition window on the top of the battery.....it should be bright green!!!!
As for the alternator..... second hand can always be an issue as you have no real idea of its history and prove to be false economy.
I would recharge the battery again and when not in use leave a trickle charge............ start from here and see if the battery will hold its charge...... cars are power hungry..... you can hear the battery burp on startup as so much power taken lol
 
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