Phone Battery performance with Chigee Airplay

Phone Battery performance with Chigee Airplay

Hello, 

Would someone kindly throw some light on how does phone battery perform with Chigee Carplay? The usecase of Chigee that most appeals to me is, screen mirroring. I want to use Chigee screen mirroring my phone, navigate, play music, etc with my phone not being on the handlebar. I want my phone to be in my pocket or bag.  How does this impact my phone battery? Any idea how long does my Iphone or Android last from anyone's experience? is there any big battery drain or heating issue?

I am only interested to purchase Chigee's Smart screen and not camera's or tyre-pressure, etc. My requirement is simply to mirror my screen. I currently use my iPhone on Quadlock and works perfectly. But I dont want phone to be charging or be on handlebar and replace it with Chigee. 

Please let me know how does phone battery perform with Chigee connected in my scenario (phone is not charging). If someone could run this experiment for me it would be great. 

Thanks a ton.