My MBP is about 4 years old, and the old battery had a cycle count of 1000+ so I bought a replacement last week and replaced it myself. Everything worked great (patted myself on the shoulder ) until a few days ago I noticed it wasn't charging. The green LED indicator is on so I think the Magsafe isn't broken. I've tried resetting the SMC & PRAM (or I think I did) but no luck. Not sure what my other options are but I think I'm going to try wipe the connectors with alcohol & cotton swab next. Here is the info on my batts / AC: Battery Information: Model Information: Serial Number: 9G925P26G4M0A Manufacturer: PS Device name: CL5322 Pack Lot Code: 4274 PCB Lot Code: 0b05 Firmware Version: 0000 Hardware Revision: 0000 Cell Revision: 0000 Charge Information: Charge remaining (mAh): 0 Fully charged: No Charging: No Full charge capacity (mAh): 3944 Health Information: Cycle count: 3 Condition: Normal Battery Installed: Yes Amperage (mA): -2626 Voltage (mV): 11069 System Power Settings: AC Power: System Sleep Timer (Minutes): 60 Disk Sleep Timer (Minutes): 10 Display Sleep Timer (Minutes): 15 Wake On AC Change: No Wake On Clamshell Open: Yes Wake On LAN: Yes Current Power Source: Yes Display Sleep Uses Dim: Yes Battery Power: System Sleep Timer (Minutes): 10 Disk Sleep Timer (Minutes): 10 Display Sleep Timer (Minutes): 2 Wake On AC Change: No Wake On Clamshell Open: Yes Display Sleep Uses Dim: Yes Reduce Brightness: Yes Hardware Configuration: UPS Installed: No AC Charger Information: Connected: Yes ID: 0x0100 Wattage (W): 60 Revision: 0x0000 Family: 0x00ba Serial Number: 0x00bb5bdf Charging: No Would it be safe to assume it's the DC in board or logic board that's causing this? Thanks in advance!!