Yeah, I'm well aware of that. The point which I was trying to make is that it's better to buy from a physical store rather than buying it online. Anyways, thank you for your update.
No known faults whatsoever. Anyways, if you want your battery to last longer, try to keep the battery charged between 40%-90%, and every 2-3 months, try to recalibrate your iPhone's battery (you can easily find it on the internet on how to recalibrate your iPhone's battery, tons of videos on YouTube), in this way, its battery capacity will decrease in a much lesser rate than normal.
I hope it helps.
Much better choice.