https://devzone.nordicsemi.com/f/nordic-q-a/44120/using-predefined-serviceI am currently using the nRF51422 device with SDK 11. I was wondering how to implement the battery life service and characteristic in my program. I have successfully advertised and connected to the nRF Connect app. If someone could please direct me toen-USTelligent Community 13Tue, 26 Feb 2019 07:11:27 GMThttps://devzone.nordicsemi.com/thread/172925?ContentTypeID=1Tue, 26 Feb 2019 07:11:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7fbdf1eb-1771-4e02-b1da-1fb9c7d545abAndreasF<p>Hi.</p> <p>I think you could start in the API reference. There are two API&#39;s, one called <a href="https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v11-0-0/group__ble__sdk__srv__bas__c">Battery Service Client</a>, and one called <a href="https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v11-0-0/group__ble__sdk__srv__bas#details">Battery Service</a>.</p> <p>You have to implement the functions you need in your code and include either <strong>ble_bas.c </strong>and <strong>ble_bas.h</strong> for the Battery Service, or <strong>ble_bas_c.c </strong>and <strong>ble_bas_c.h</strong> for the Battery Service Client.</p> <p>Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>