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www.fdanews.com/articles/138110-zoll-gets-fda-warning-letter-on-defibrillator-8217-s-battery-life

Zoll Gets FDA Warning Letter on Defibrillator’s Battery Life

July 5, 2011
Zoll Medical received a U.S. Food and Drug Administration warning letter for allegedly failing to validate the battery life of its automated external defibrillators. In a website posting on Tuesday, the agency claimed Zoll received 15 complaints from September 2009 through January 2011 of battery depletion prior to the calculated five-year battery life cycle.
The Wall Street Journal