Would it be safe to always charge iPhone Plus with a wall charger designed for an iPad (12w). It charges quicker (I think) but could it possibly impact iPhone battery capacity in a long term perspective?
Heard it can damage the battery but i'm not too sure.
If it wasn't safe to use with an iPhone, do you think Apple would list every iPhone as compatible devices?
http://www.apple.com/shop/product/MD836LL/A/apple-12w-usb-power-adapter
No, it doesn't.
I'd stick to normal charging to be safe and limit fast charging to special circumstances and even then keep an eye on it. It's listed as compatible but has also been involved in a fire.
http://www.ejinsight.com/20150706-tai-wai-womans-iphone-6-plus-explodes-while-being-charged/
Likely a counterfeit or third party charger.
The owner, surnamed Tsang, said she was shocked at the explosion, adding that the 128GB handset and all its accessories were original Apple products.
It helps to read the article.
speculation among netizens that this could be the cause of the explosion as the cable for iPad has a voltage of 2.5A, while that for iPhone is 1A.
I've been allways using an iPad charger as well. What made me ask this questinon was that my 6s battery is at 80% of it's original capacity at the moment (as reproted by Coconut). The phone is 11 month old. Although it might be that this is another issue cause it has a lot of battery cycles behind it already.
Now if she would just give you the unlock code!!heck, I am even charging my wife, since 2013, with the 12W iPad charger. She is always fully loaded!