key left in ignition dead battery now ?
 

My boxster was in the shop for a few days while my mechanic put on a new exhaust, he said he left the key in the ignition for a couple days on the off position of course and the battery died will that draw power ?it seemed to charge up fine and is fine now but it sat all winter I did charge it a few times but the last time it sat for a month in my garage it died also and I had to charge it ?might be time for a new battery ?

yep
 

batteries are like your love wand, if ya don't use em ya lose em!!! put a new battery on and if you dont use the car all that much buy a trickle charger (battery conditioner) and keep it connected all the time, it happened to me, it also messes up your alarm sometimes too!! ps ..never leave your keys in the ignition!!!!!

I agree with JC, you did damage your battery but I don't think you killed it at all. My battery won't hold a charge for a month of inactivity. I don't think it ever could in the 3 years I've had it.

If you really want, You can have it load tested at any big box auto parts store. Just remember a batteries is just like us, dieing from day one. I'm half dead, doesn't mean I won't be effective for another 40 yrs. You may have just knocked a year or less off it's 5 or 6 year life.

Regards, PK

Most batteries looked sealed but still have access to the individual cells. Make sure if you can access said cells that you have distilled water covering the interior plates. If you charge the battery with plate exposed it ruins the cell, one dead cell and the battery is D U N Done.