Went and picked up my macbook. Been watching Cowboy Beebop. Just spun up the cyberdeck on its battery, with one cpu core at 100%, to see how long the battery lasts. Discovered I may have a problem, since it looks like the computer rebooted when I unplugged the battery from mains. That won't be acceptable, so I'll have to verify later. Maybe I wiggled the cable or something.