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

stoopkid

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.

mowcius

With no sleep mode enabled? A few hours probably.

pluggy

I read some where around 13 hours with a PP3 type alkaline.
http://pluggy.is-a-geek.com/index.html

BillHo

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

AWOL

Quote
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.
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

mowcius

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

You haven't accounted for the loss through the regulator and various other factors.

I assumed we are talking about an arduino rather than just a chip - 13 hours looks more likely.

Mowcius

stoopkid


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