Battery status is so important! I would like to share what I have found while researching this for you.
I have checked the User's Manual for this device, and I see that the battery status is listed on the top right of the notification bar on the device. Is this not showing on your particular phone?
Here is a picture of the Octane, and the battery life shows on the very top right-hand corner of the display.
I have included a link for the phone guides, so you can view, print, or download it. Once clicking on the link, please click on the picture of the Octane.
I hope this information is helpful!