I recently bought a 3m (meter) Apple charging cable and found that it was charging my iPad slower than usual.
I plugged it to a USB tester and found that it charged at ~5v 1A. By comparison, my 1m cable charged at around 5v 2A.
Is it this normal, should there be that much of a difference?
I'm testing by charging an iPad. The wall adapter is the genuine 12W iPad wall outlet rated at 5.2v at 2.4A. I have a genuine Apple 1m cable and I also bought a 3m and 1m cable third party cable off eBay. They are unbranded.
- Both genuine and non-genuine 1m cables charged my iPad at around 5v 2A.
- The non-genuine third party 3m, cable charged the same iPad at a bit less than 5v 1A.
The cable nor USB tester gets warms up enough to feel, but the wall plug does, so I don't think it will be (hope it won't be) a fire hazard.
Here are some pictures of the USB tester, maybe that will help. First one is a with the 3m cable