Tell me about it. I bought a genuine Samsung battery for a tablet on ebay, it was as much good as a concrete parachute.There are a lot of hooky "Samsung" branded batteries out there.
Ah, right.The Note 4 is from 2014, Mottie. I don't remember it having that feature.
Some chargers have a puny output, others much bigger. Check the output on the charger.
Anker stuff (IMO) is not bad at all.