I was faced with this EXACT issue. I tried a bunch of different software based solutions that tried to know when my phone was charging. They all failed miserably. I found my charger intermittently stops charging when the battery is full. Thus creating an issue. I have a period called "quiet time". This represents when one person is in bed (1 phone charging). Myself or my husband. When quiet time is active, the only lights that activate to motion are a set of lightify's lining the bed frame at 20%. Just enough light for the other to move around. The mode triggers flawlessly at any time of day. Other lights interact differently in quiet time, but not related to the bedroom lighting. This is how I intended it to be. I actually modified our qi chargers with a button and contact sensors. This is a link to my project. I have rules set up for this as well. If it's something you're interested in exploring, I'm happy to share my rules as well. I prefer our house to react to us. I don't want to have to consciously turn on or off a virtual switch for my house to change modes or control lights. Most of my modes are based on those two qi chargers. It's been wonderful.
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