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Topic: Atmega battery life (Read 1 time) previous topic - next topic


If The atmega328p is running constantly off a 9v battery, what would the life of that battery be about? Not counting anything else attached to it.


With no sleep mode enabled? A few hours probably.


I read some where around 13 hours with a PP3 type alkaline.


With typical Power Consumption of about 5mA when active at 16MHz, 9v battery of 150mAh capacity.
it will be 150mAh/5mA about 30 hours.


it will be 150mAh/5mA about 30 hours.

...less the power wasted in the regulator.

PP3 batteries are a terrible way of powering Arduinos.
For a similar volume, you'd be better off with 4 NiMh AAs bypassing the regulator.
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