Question

Lithium halide cells are used in

• A. Pacemakers
• B. Ultra sound imaging
• C. Position emission tomographic scanning (PET)
• D. None of the above

Answer 1

Answer: (A)

Pacemakers

Lithium batteries have application in many long-life, critical devices, such as pacemakers and other implantable electronic medical devices. These devices use specialized lithium-iodide batteries designed to last 15 or more years. Lithium batteries are disposable (primary) batteries that have lithium metal or lithium compounds as an anode. They have high charge density (long life) and high cost per unit. Depending on the design and chemical compounds used, lithium cells can produce voltages from 1.5 V (comparable to a zinc - carbon or alkaline battery) to about 3.7 V. Lithium-ion batteries are rechargeable batteries.

So, the correct answer is 'Pacemakers'