Thin-profile battery circuits and constructions, and in particular button-type battery circuits and constructions and methods of forming the same are described. In one implementation, a substrate is provided having an outer surface with a pair of spaced electrical contact pads thereon. At least two thin-profile...http://www.google.co.uk/patents/US6548207?utm_source=gb-gplus-sharePatent US6548207 - Thin-profile battery circuits and constructions, button-type battery circuits and constructions
