Does low power mode save some battery?

I was a person who did not used any power saver on my any previous phone because i used to believe that the default power savers are just gimmick and never give anything in return.But after using my iPhone 7 for 4 months i gave a chance to the power saver to do the trick.

I charged my phone 100 percent and used it like i daily use my device Without the power saver and i got usage time of about 6 hrs and 45 min. Which is okay for me. 

Next day i charged back to 100 and used the device like yesterday with power saver turned on and the result was even more interesting this time. I got usage of about 7 hrs and 53 mins  

So after the test what i discovered was that if you use your device with power saver you are going to get better battery backup like i got and the total 1 hr 8 min is a huge difference between the "no power saver" and "power saver on".
I even tried to stay more realistic so what i did i used the same apps daily which include some shopping apps like amazon and flipkart, social apps like Snapchat, Instagram, Twitter and various others but used same apps both the days. 

So if you are like me and never used power savers which came reinstalled in your phone kindly give them a try and let me know in the comment section! Thanks for reading!!