Battery dies/Computer shuts down at 60%

Question

I have a MacBook Pro 4,1 2.4GHz. I am experiencing battery issues. I will have it plugged in until full charge, and then when the power is removed, the percentage depletes very quickly, and then at about 60%, the computer just shuts down.
Is this proof that I need a new battery, or are there steps I can take to test? I have reset the SMC. I searched around this forum, but do not see any obvious fixes.
Thanks in advance.

Answer 1

This is almost exactly what is happening to me, except it doesn't seem my battery needs to be replaced. The computer shuts down without warning (not sleeps) around 60%. Do you know what I can do?
Battery Information:
Model Information:
Serial Number:
Manufacturer: SMP
Device name: ASMB014
Pack Lot Code: 0002
PCB Lot Code: 0000
Firmware Version: 0110
Hardware Revision: 0500
Cell Revision: 0102
Charge Information:
Charge remaining (mAh): 2751
Fully charged: No
Charging: Yes
Full charge capacity (mAh): 3224
Health Information:
Cycle count: 412
Condition: Fair
Battery Installed: Yes
Amperage (mA): 1300
Voltage (mV): 12513
System Power Settings:
AC Power:
System Sleep Timer (Minutes): 0
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 20
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): 60
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 5
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