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

[PK]

I use nRF51822 Model in my project that I need to run bluetooth advertising all time. And when I measured current, I found 1mA that is not enough to run for 1 year by just using a battery (coil type). I use sd_app_evn_wait(); in while loop.

As I knew that Bluetooth low energy can use only for 1 year in 1 coil battery each.

How can I fix it?

[Marius Heil]

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.

[PK]

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

[Stefan Birnir Sverrisson]

Hi

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

[Marius Heil]

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

[PK]

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.