MacBook Pro shuts down when unplugged I have a late 2008 MacBook Pro work computer. Here's the sequence of events:


I fully charge the battery
I unplug the Mac from the power cable
The Mac immediately shuts down


Before unplugging the Mac, I press the battery power indicator button and all lights are green. When I unplug the Mac I press the indicator button again and only one light is green.

I've tried resetting the PRAM, SMC and even bought a new battery but the problem persists. Here is the System Information.

How can I get my MacBook Pro to stay powered on when not plugged in?

Update: It was a dead battery. Apple gave me a new one for free.
Looks like your battery is dead. Your system report states that:

37.   Condition:    Service Battery

Time to either stay plugged to power, or get a new battery.