My sister gave me her old Macbook Pro mid 2010 with a bad hard drive. I replaced it and now works great. I restored/migrated data from my iMac via ethernet cable and noticed the battery drains very fast on it now. My sister said apple replaced the battery under 2 years ago, so it should still be good. it drains almost 1% every minute or two. Is it possible that the restore was funky and is creating the drain? I won't bother or hurt me to start from scratch and reinstall the OS, so I will if it will fix the drain. But I would rather not go that route if its not necessary. Any ideas?