icon, battery with a star

[joemontana57]

I have an unfamiliar icon on the top of my notification area. It's right next to the Bluetooth icon. It looks like a battery with a recycle symbol on it or an atomic symbol, or some symbol.
My icons from left to right are the battery with the star, Bluetooth, NFC, alarm, data movement, 4G, signal strength, battery percentage

 

[chanchan05]

Possibly power saver.

Is it like the one I have there? Leftmost is power saver, the circle with a + sign is data saver.

 

[joemontana57]

Yes, that was it. I had forgotten that I had ps turned on.