speciality batteries > zinc air

Zinc Air cells, commonly known as "button cells" are small in size, and provide sustained reliable power for critical applications such as hearing aids, calculators, infusion pumps, pager equipment etc.

	The chemistry of a zinc air cell is similar to an alkaline cell.
	Generally, because of their miniature size, these cells require materials of the highest energy density and quality to have a reasonable capacity.

 

 

Postives

Negatives

Lowest cost miniature primary cell, per unit of energy delivered.	Limited peak power capability in button cell sizes.
Long service life.	Once activated (tab removed), shelf life is very short.
Excellent storage life, prior to activation.	Requires air access thru the device.
Generally good leakage protection.	High initial cost.
High specific energy density as the cell needs to hold only anode material.	Primarily for continuous (long run time devices), i.e.. hearing aids, telemetry monitors.