Is it possible that bluetooth advertising all time long about a year by using 1 coil battery.

RE: Is it possible that bluetooth advertising all time long about a year by using 1 coil battery.

PK — Mon, 14 Sep 2015 02:33:10 GMT

Thank you for reply :)

RE: Is it possible that bluetooth advertising all time long about a year by using 1 coil battery.

PK — Mon, 14 Sep 2015 02:32:51 GMT

I use an ampere meter at the current measurement zone(I cut the SBB pad follow datasheet). Thank you very much for the best answer.

RE: Is it possible that bluetooth advertising all time long about a year by using 1 coil battery.

Marius Heil — Sat, 12 Sep 2015 07:59:53 GMT

OK, 1 second should give you a much better lifetime. How did you measure the current on the board? I was doing measurements myself and found out that you have to switch the board off an on again after flashing a new firmware. This is not mentioned in the measurement guide. But the debugging will still be active after flashing a new firmware and your board will consume a loooot of energy.

You can have a look at my current measurements. I've measured a few different scenarios here: github.com/.../Battery-Consumption

RE: Is it possible that bluetooth advertising all time long about a year by using 1 coil battery.

Stefan Birnir Sverrisson — Fri, 11 Sep 2015 15:41:50 GMT

You can see some current consumption scenarios on this thread.

We could perhaps assume that your application consumes 30uA on average with 1 sec advertising interval. If you use typical CR2032 with 220mAh of energy, the expected lifetime is:

0.22/0.00003=7333 hours = 305 days = 0,83 years

RE: Is it possible that bluetooth advertising all time long about a year by using 1 coil battery.

PK — Fri, 11 Sep 2015 15:08:54 GMT

I mean Advertising role all time, now I use 1000mSec interval. Thank you for reply.

RE: Is it possible that bluetooth advertising all time long about a year by using 1 coil battery.

Marius Heil — Fri, 11 Sep 2015 13:17:33 GMT

What do you mean by "advertising all time"? Do your mean at an interval of 20ms oder would 4s be enough? Depending on the interval, your lifetime may vary between days and years.