Originally Posted by
DC-COFlyer
I can an extra battery for my MacBook Pro in my briefcase and have for two years. Never questioned except once at LHR where they looked at it briefly. Never inspected in the U.S.
I have a spare battery that fits in the modular bay of my laptop. I've carried it around for over a year now without a question about it, even in Europe. Maybe because it looks exactly like the removable CD drive, and not so much like a battery.