this post was submitted on 03 Oct 2024
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Wireless charging WILL wear out your battery faster.
For longevity, use a slow wired charger. This will put the least thermal strain on the battery.
How exactly?
Also, my phone charges slower with a wireless charger.
Lots of hand wavy theories and generalizations in the answers below, some of them sound very convincing. None of them actually cite any sources or backup those theories with data.
Here's my own acedotal experience. I've put my phone down on a seemingly well designed wireless charging pad every night for almost 4 years and this phones battery has shown zero sign of deterioration that I can see. This is the first phone I've ever owned with wireless charging and also the first with a battery that hasn't given up the ghost in 2 years or less. The same pad also charges my smart watch every night, which doesn't even have any other option for charging.
Next they'll be telling you to avoid using cruise control on the highway because it will wear out the transmission. Use your phone as it was designed to be used and stop worrying.
I don't know but anecdotally I've experienced this with every single phone I've had that's been wireless charging.
It just shortens its life somehow. I thought I was crazy. It didn't make sense unless it does fancy shit with the crystals inside or it heats it badly
That is a deeply unsatisfying non-answer.
Seeing as you're unhappy with the actual answers, I'm thinking you just wanted to be agreed with.
I'm unhappy with the answers because they just parrot the first comment and provide little evidence.
Which only states that wireless charging will wear out your battery faster than wired. Not that it's critically damaging the instant you opt to use it, or that it will shorten the lifespan of a device to nothing.
There is a difference, that's straight up true. One method has the battery sitting at a temperature that is worse for the chemistry involved. That is indisputable. Super fast fast charging that only slows down to keep an already hot battery from becoming dangerous, essentially redlining it for the whole process, has the exact same downsides in terms of thermals, except that wireless charging, being inherently slower for equivalent temperatures, keeps the battery warm for longer.
What exactly the difference ends up being, varies from application to application, and from device to device. Obviously, if you lower the charge speed of wireless until it doesn't heat the battery any more than wired, there wont be a difference, but then you could just do the same for wired charging, and have the battery last even more cycles.
Bottom line, whatever option runs the battery the coolest on a given device, WILL CAUSE THE LEAST WEAR. That's simply true.