A circuit board apparatus of a battery pack in which tape is attached to low priced flexible printed circuit boards (FPCB) so that it is possible to prevent cracks from being generated in the FPCBs when the FPCBs are bent. The circuit board apparatus includes a first board, a second board, and a bendable...http://www.google.co.uk/patents/US7606041?utm_source=gb-gplus-sharePatent US7606041 - Apparatus and method for battery pack circuit board crack prevention