[Engr Aamir Khan Niazi]

I am very happy with my iPhone 5s battery. I charge it after 1.5 days.
I use internet, Facebook check emails, Messages, Phone Calls. Battery lasts for 1.5 days. I always keep power mode=ON.

One more thing I charge my iPhone 5s with iPad Air charger and cable, it takes less time than iPhone 5s original charger and cable to fully charge.
Am I damaging iPhone 5s battery by charging it with iPad Air charger?

[Highrisedrifter]

I don't think that leaving Power Mode on will have any adverse effect on your battery or its life at all. The iPad air charger is 10w and the iPhone charger is 5w I believe, so the iPad charger will charge the phone quicker.

This is fine. I do exactly the same and have for five years with no ill effects whatsoever.

[Just_Me_D]

I am very happy with my iPhone 5s battery. I charge it after 1.5 days.
I use internet, Facebook check emails, Messages, Phone Calls. Battery lasts for 1.5 days. I always keep power mode=ON.

One more thing I charge my iPhone 5s with iPad Air charger and cable, it takes less time than iPhone 5s original charger and cable to fully charge.
Am I damaging iPhone 5s battery by charging it with iPad Air charger?

As stated above, you will not damage your iPhone by keeping power mode on.

[Ledsteplin]

I wouldn't leave low power mode on much because it hampers certain functions. I really don't like my autolock on for only 30 seconds. I like it at least 1 minute. But that's me. And, no, it won't hurt your phone to use it.