3 ms·A 9% (static) failure rate, implies an average lifespan of 11 years...by onlyrealcuzzo 3mo agoA 9% (static) failure rate, implies an average lifespan of 11 years...camkego 3mo agoWith a median lifespan of 7.35 years, although I doubt that 9% per year remains constant as the number of years increases.aaron695 3mo ago[dead]