life of a battery

The life of a battery depends on:

	The bigger the space inside a battery, the more room for the chemicals and higher the capacity.
	In batteries of the same chemical system, larger batteries last longer than smaller batteries.
	Duracell batteries have a specific design that allows maximum space for chemicals.

 

 

	The type of battery chemistry used allows more or less electrons to occupy the same amount of space.
	Alkaline battery chemistry allows for more electrons to be in the same space rather than zinc battery chemistry and therefore operates any device longer than zinc batteries.

 

 

The parallel connection gives the same voltage as a single battery, but multiplies the capacity and use life of a battery. 2 x 1.5V in parallel = 1.5V x 2 times capacity (That means higher current)

 

 

A serial connection multiplies the voltage but gives the same capacity and use life of a single battery. 2 x 1.5V in serial = 3V x 1 time capacity (That means higher voltage)