Power supply 25v 0.45a for Philips fc6163, fc6164, fc6167, fc6168, fc6169, fc6171, fc6401 FC - AliExpress
Amazon.com: DRAWBELL Replacement Battery for Philips FC6168, FC6169, FC6171, FC6404, FC6405, FC6763 Part NO 5ICR19/65 (2500mAh/18.5V) : Health & Household