I have a MacBook Pro (15-inch, Mid 2010, MacBookPro6,2) which does not switch to battery power when the power adaptor is removed. It simply goes off. However the battery is reported as 100% charged. I can only use the MacBook with the power adaptor plugged in.
When plugging in, the LED shows orange for a few seconds, then switches to green. When I remove the power adaptor for more than a few seconds, the clock resets to Jan, 1 on the next reboot.
The battery is two or three years old but it is not the original one. It is possible that it has degraded over time but even then I would expect it to deliver power for at least a few minutes, so I think the problem is something different. Also the battery worked as usual a few days before.
I tried a SMC reset (shift–ctrl–option–power) which did not fix the problem. Is there a way to find out whether the SMC reset was in fact executed?
Anything else I can do?
Here is the battery info:
Battery Information:
Model Information:
Serial Number: W01107AW7D3BA
Manufacturer: LMP
Device Name: A1321
Pack Lot Code: 3230
PCB Lot Code: 30db
Firmware Version: ddae
Hardware Version: dac2
Cell Revision: 2b39
Charge Information:
Charge Remaining (mAh): 6996
Fully Charged: Yes
Charging: No
Full Charge Capacity (mAh): 7033
Health Information:
Cycle Count: 163
Condition: Normal
Battery Installed: Yes
Amperage (mA): 0
Voltage (mV): 12508
Best Answer
Okay, the steps for resetting the SMC on a MacBook Pro with a built-in battery are as follows:
Is that what you did?
Resetting your PRAM/NVRAM
Older Macs had what's called Parameter RAM (PRAM), newer Macs use Non-Volatile Random-Access Memory (NVRAM). It may be worth you resetting your PRAM/NVRAM, using these steps:
Note: When you log back in you may need to readjust some of your system preferences (e.g. mouse speed, time and date/timezone, etc).
Let us know how you go.