The Google Play Services app installed on your Android 4 and up device will save battery power
WARNING - I will NOT be held responsible for any damages the software(s) and methods shown in this video may cause to yours or someone else's hardware, software, and/or data, including loss of use of such devices and/or loss of data and/or loss of profits from the resulting inability to use such devices and data. Any information or program you choose to put into use from this video is done AT YOUR OWN RISK. As a precaution, I recommend backing up any irrecoverable data before installing and using ANY new software(s), including those shown in this video.
Having an up-to-date Google Play Services app installed on your Android 4 and up device will save battery power, will improve battery economy / autonomy and will reduce your Android device's battery consumption levels, even in Airplane Mode (with all transmit / receive functions disabled).