Third Party Batteries
Made by a company who make their own batteries within the specs of Apples own original battery.

How to find out your model

On an iPhone open Settings
> General
> About.

To the right of “Model”, you’ll see the part number (MWHH2B/A)
To see the model number, tap the part number

A code that starts with “A” should be shown

You can also search using the “model name”