I bought a set of these for me and my Fiance as soon as we got our Note 3's. We are both very accustomed to having spare batteries, we also had some with our Galaxy S3's. I have not had any issues to speak of with these batteries. Life is on par with stock battery, charge as expected, charger is functional etc. I would highly recommend them. I think I snagged them for about $26 on Amazon a couple weeks ago.
Phone:Samsung Galaxy Note 3 on AT&T
Rom:Dynamic Kat 4.2 with AOSP theme