A smart battery pack and a method for recognizing the battery type using the same. The smart battery pack includes at least one battery cell coupled to an external set via positive and negative electrode terminals. A timer circuit is coupled to the external set via a data terminal and is adapted to apply...http://www.google.co.uk/patents/US7492121?utm_source=gb-gplus-sharePatent US7492121 - Smart battery and method for recognizing battery type using the same
