January 2018
Intermediate to advanced
524 pages
13h 33m
English
Content preview from Internet of Things for Architects
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Energy and power models
Battery capacity is measured in amp-hours. A simplified equation to estimate the life of a battery power source is given as:
In the equation, Cp is Peukert's capacity, I represents the discharge current, and n is Peukert's exponent. The Peukert effect, as it's known, helps predict the life of a battery where the capacity of a battery decreases at a different rate as discharge increases. The equation shows how discharging at higher rates removes more power from the battery. Alternatively, discharging at lower rates will increase the effective runtime of the battery. One way of thinking of this phenomenon is a battery ...
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