Apple Charging Cord Diameters

Q. 1: The compatibility list for the cord includes both the iPhone and iPad:

http://www.apple.com/shop/product/MD818AM/A/lightning-to-usb-cable-1-m

Q. 2: You can use the 12 Watt charger for the iPhone with no issues but the 5 Watt charger will work very slowly with the iPad:

Using iPad power adapters with your iPhone, iPad, and iPod - Apple Support

It shouldn't make a differnce, but the use of the thinner connection cord of the iPhone could put more elecrrical stress on it using the thinner cable to charge the iPad.

I really do not like any of Apple's iDevice connection cables, although the one that my iPad Pro came with was a wider than usual diameter (slightly heavier gauge wire?) than what has normally come with iPhones/iPod Touches/other iPads.

Over the years, Apple has made their iDevice connection cables cheaper in quality and more expensive in price.

Personally, over the past five or six years, I have replaced most of my cheaply made Apple branded cables with better quality cables of either same price or in most cases, slightly cheaper pricing and have never had a problems/worries with any of them.

The one I use with my iPad Pro and iPod Touch is a pretty high grade, thick wire cased braided cable that also has some flexibility and bendability.

The first article I linked shows the cable as compatible with both.

I would not use 1 Amp chargers for iPads as the iPad would charge very very slow. I have a 2.1 A Belkin charger and it is ok but I prefer a dual Anker 2.4 watt or the original Apple 2.4 watt charger as they charge all.