I was struggling to find a solution but google was of no help. Therefore posting here hoping for some solution. I don't know why there is no option available to view battery level / life in number / percent in text form or just using simple script that would make it work.
I did find another options using 3rd party http://robnyman.github.io/battery/
But I am not sure how to implement this using script.
Any sort of help would be appreciated along with sample script.