Lithium-iodine batteries are particularly useful in situations in which small amounts of current are...

Lithium-iodine batteries are particularly useful in situations in which small amounts of current are required over a long period of time. One such application is in a cardiac pacemaker (Fig.P19.7), where changing a battery requires a patient to undergo an operation. Typical pacemakers require 0.50 碌A of continuous current. If a lithium-ion battery is capable of supplying 0.50 A 路 h of charge, what is the lifetime of the battery? Does this lifetime seem sufficiently long?

Figure P19.7 View of a cardiac pacemaker, both inside and outside a patient.