Apple broadcasts this feature themselves. You can use it safely without worrying about damaging your iPad. I have had my 29w fast charger for a couple of weeks now and it has been fantastic to be able to charge my iPad Pro just as fast as I can charge my iPhone 7 Plus.
I'd love to know how you came up with this 11% figure.Just like every other fast charger, it will take its toll. Had a 12.9 1st gen since January, had about 11% battery damage in that time using the fast charger strictly. Not using it on my 2nd gen. A faster charger will always put more strain on the battery, it's a good feature to have in an emergency, but it's probably not wise to use it as a main charger.
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It does hurt the battery.
Look at it like this: Apple replaces a battery at 20% depletion in two years (if you have AppleCare) it really doesn't matter to them in two years if you lose 5% using the normal charger, or 15% using a fast charger, it will degrade your battery life.
I'd love to know how you came up with this 11% figure.
Here’s an interesting informational article about electric vehicle lithium ion battery charge rates, there’s a graph that illustrates rapid charging cell degradation like acorntoy is discussing above. The comments at the bottom are talking about how this would be applied to our mobile devices.
http://batteryuniversity.com/learn/article/ultra_fast_chargers
I talk about electric vehicle batteries at work way more than I should be, there’s a single level 1 charger that 4 or 5 of my coworkers share and had to work out a round robin schedule, so people are always plugging and unplugging and playing musical cars.Thank you, I was gonna say, if Apple had solved fast charging, they would have nearly every car manufacturer at their door offering them a ridiculous sum for the technology.
I talk about electric vehicle batteries at work way more than I should be, there’s a single level 1 charger that 4 or 5 of my coworkers share and had to work out a