Hello MR community! Just throwing out my situation and resolution for any who encounter it (When I MRoogle'd it originally, I saw others ran into the same issue) Specs: 17" i5 Glossy (Mid 2010) - MBP Issue: Battery Not Charging Details: In short, with the power adapter plugged in, my MBP would still show as "BATTERY NOT CHARGING". The light on the adapter would stay green and not change to orange. While it wouldn't recharge the battery, it did provide enough "juice" for the MBP to run off of. Some of the posts on this forum pointed to this being a faulty battery and to take it into the Apple store. In doing so, the helpful Genius diagnosed the problem as the Power Adapter being faulty, not the Battery. Resolution: They provided me with a brand new power adapter right out of the box. In and out of the store within 15 mins.