diff --git a/code/nrf-connect/samples/ble/README.md b/code/nrf-connect/samples/ble/README.md index f6fe90f..3446f3e 100644 --- a/code/nrf-connect/samples/ble/README.md +++ b/code/nrf-connect/samples/ble/README.md @@ -43,8 +43,14 @@ While in deep sleep, the board consumes around `3.0 uA`: ![Sleep current consumption](./media/power-profile/sleep.png) -In the active broadcasting state, with default settings, the average current consumption is around `344 uA`: +In the active broadcasting state, the average power consumption is highly dependant on the advertising interval. -![Broadcasting current consumption](./media/power-profile/broadcasting.png) +With the default settings (in the `[30, 40] ms` range), we see an average of around `810 uA`: + +![Broadcasting with 30 ms current consumption](./media/power-profile/broadcasting-30.png) + +If for example we lower the connection interval to the SDK defaults (`[100, 150] ms`, roughly trading off range for power), the average current consumption is around `345 uA`: + +![Broadcasting with 100ms current consumption](./media/power-profile/broadcasting-100.png) With a `200 mAh` CR2032 battery, we can use [this spreadsheet](https://docs.google.com/spreadsheets/d/157JQiX20bGkTrlbvWbWRrs_WViL3MgVZffSCWRR7uAI/edit#gid=0) to estimate the battery life to over two years. Note that this is a simplified model and results in practice may vary. \ No newline at end of file diff --git a/code/nrf-connect/samples/ble/media/power-profile/broadcasting.png b/code/nrf-connect/samples/ble/media/power-profile/broadcasting-100.png similarity index 100% rename from code/nrf-connect/samples/ble/media/power-profile/broadcasting.png rename to code/nrf-connect/samples/ble/media/power-profile/broadcasting-100.png diff --git a/code/nrf-connect/samples/ble/media/power-profile/broadcasting-30.png b/code/nrf-connect/samples/ble/media/power-profile/broadcasting-30.png new file mode 100644 index 0000000..f0e65c7 Binary files /dev/null and b/code/nrf-connect/samples/ble/media/power-profile/broadcasting-30.png differ