Hello people, this is my first post on this forum and i am here because of some confusions about Mira E:S ECO IDLE technology. I hope you people will be able to help me out

I have read that hybrid cars have regenerative brakes which upon pressing the brakes charge the battery.
The same regenerative brakes are in Mira E.S however Mira E.s is not a hybrid and it doesn’t have such battery. So what does Regenerative brakes charge then ?
Secondly if Mira E:S has a battery like Hybrid? Is it of the same size and expensive? :S

https://www.google.com/search?q=mira...w=1280&bih=808