An implantable cardiac device, such as a pacemaker, provided with a carbon monofluoride (CFx) battery. The CFx battery enables replacement of the typical voltage tripler with a voltage doubler and eliminates the need for a bulky decoupling capacitor. The device includes a precision A/D and voltage monitor...http://www.google.com/patents/US6804557?utm_source=gb-gplus-sharePatent US6804557 - Battery monitoring system for an implantable medical device
