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I always leave my phones plugged in overnight. But they are usually doing something like streaming the radio or something else. Its fine. I own RC that runs on LiPo, batteries age guys, they do not last. Use them, charging to 80 and drain to 20 is dumb. I generally try not to let my phones hit 20 or under.
 
Apple! I had a battery replacement last year on my xs max and they charged me $59.
If Apple had agreed to replace the battery on my 6 Plus it would have been $89 for me.

I went to them because that's where I go for repairs/replacements, but the treatment I got this time around put me off. I went somewhere else and it was a bit more expensive, but I get a 1 year warranty. Apple only gives you 3 months I believe.
 
To answer my own question from last year, I'm happy to report that with my phone on a MagSafe charger most of the day and charging limited to 80%, my battery is still at 100% health after nearly a year of use. So no, leaving it on a wireless charger doesn't seem to harm the battery at all unless maybe you're letting it charge up to 100% each time.
 
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I recently had an SE with original genuine battery and claimed 100% battery health.

A few weeks ago, I noticed the screen backlight starting to show at the top of the device and after a few weeks it became clear that the battery had swelled up and pushed the screen away from the body.

It did spend most of its life plugged into a genuine 5 watt Apple charger.

Now, I didn't expect 100% health because the phone was a few years old but given all the fuss that Apple make about third party batteries not reporting accurate health... I was a bit surprised that this fully original Apple setup failed in this way.

I do think Apple tend to underspec the battery capacities, whether by design or cost engineering... and that gives rise to user problems as the devices age.
 
There’s an iPhone XR at work with the IT guys that sits on a satechi 7.5watt wireless charger 90% of the time since its release, it’s currently at 75% battery health
 
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1. I got a Wifi Smart Plug
2. Set up automation on iPhone, when battery level is 100%, turn off Wifi Smart Plug.
 
Mine not on the charger until it's gasping for air. I always wondered this with the wireless charges since the phones get so hot
 
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