I would like to know what the real advantages are of a so called intelligent battery? They add cost - weight - and a load of problems when they go wrong. I would much rather a battery that gradually loses power so you know where you are. All it needs is a battery voltage sensor so it knows when to return home. And off topic I know but I never cease to be amazed by the rechargable nicads in my Phillips shaver. It is 15 years old and the batteries STILL last for 4 weeks daily use on a single charge - incredible!!!