Chosen Solution
My aluminum MacBook is about 2 years old now. I use it very often, so perhaps this is just normal? It turns off randomly, without warning, with more than enough battery power left. It’s happened 4 times in the past month or so and I’m beginning to get worried! It just happened today, after I unplugged my adapter for about 15 minutes. I left the computer off for 4 hours. When I returned to it, I plugged in the adapter and turned on the computer…turns out there was still 55% of the battery left! I really hope someone can help me figure out what the problem is… Here is what my System Profiler says about my Power: Battery Information: Model Information: Serial Number: DP-bq20z951-3a2c-4a24 Manufacturer: DP Device name: bq20z951 Pack Lot Code: 0000 PCB Lot Code: 0000 Firmware Version: 002a Hardware Revision: 0005 Cell Revision: 0100 Charge Information: Charge remaining (mAh): 2338 Fully charged: No Charging: Yes Full charge capacity (mAh): 3245 Health Information: Cycle count: 551 Condition: Good Battery Installed: Yes Amperage (mA): 385 Voltage (mV): 12293 System Power Settings: AC Power: System Sleep Timer (Minutes): 15 Disk Sleep Timer (Minutes): 10 Display Sleep Timer (Minutes): 15 Automatic Restart On Power Loss: No Wake On AC Change: No Wake On Clamshell Open: Yes Wake On LAN: Yes Display Sleep Uses Dim: Yes Battery Power: System Sleep Timer (Minutes): 0 Disk Sleep Timer (Minutes): 10 Display Sleep Timer (Minutes): 0 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 Charging: Yes Thanks for reading!
This sounds like it could be an overheating issue. Has it been rebooting after you’ve been doing particularly graphics / cpu intensive processes? Watching online videos or playing games would be two fo the big ones. Older computers tend to accumulate dirt, dust, etc inside them after that long of a time. My first recommendation would be to clean out the inside of your computer. To find out what kind of MacBook Pro you have, you can use our ID-Your-Mac tool. After you know which model you have, you can use one of our appropriate guides found from this MacBook Pro device page. When you open it up, try using some canned / compressed air to blow out and remove the dust you’re likely to find. Hopefully this will improve your situation. :)
