Hi,
I would like to know what is the power consumption of spark core and its built-in wifi module (interms of wattage)??
Basically i need to figure out what kind of power source (battery? - what type of battery?) that i need to use for my product and how long it can run without re-charging?..
Thanks,
Vad
That`s a not easy to answer question, since it largely depends on your code and WiFi use/connection.
But using the search feature of this forum will give you some topics that might help you get an idea.
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@vadivel, @BDub had done a great analysis of battery consumption for wake vs sleep time on a Core but I can’t seem to find the link 
However, the gist of it is as follows:
Sleep mode Power
------------------------------
DEEP_SLEEP ~187uA
SLEEP (WiFi OFF) ~30-40mA
WiFi ON ~150mA

numbers edited by BDub