Analysis: More misinformation. It's true that Motorola manufactures microchips for smart cards, but it's only one of several companies that do so (by the same token, Mondex isn't the only manufacturer of smart cards).
Motorola also makes implantable biochips for medical applications, but please note (and this is very important): Mondex has nothing whatsoever to do with biochips — they're in the smart card business, period.
Also, contrary to the information given above, a transponder is not a "storage system." It's simply a wireless communications device that sends and receives information.
As for how biochips are powered, the implants now being used for applications like pet identification don't contain batteries at all; they're "passively powered," i.e., energized by close proximity to the appropriate scanning devices.