I'm thinking my MacBookPro battery is a bit sick. Unplugging the power supply at full charge shows 35 minutes remaining in the menu bar and I get no warnings before the machine shuts down.
I've tried the re calibration before to no avail. The problem is the computer doesn't present the low power warning, nor does it go into sleep mode. It just shuts down. I'll try re calibration again today and see what happens. Thanks.
- Gilbert Harding