The Product which you can see Beside is iPhone 6S Battery connector .
iPhone 6S Battery connector is a high quality and affordable repair part.
iPhone 6S having problem with charging or battery connection failures with battery flex When you notice that no motion while pressing and doesn’t make proper contact with the Battery connector and its not working properly replace it with below Product.
iPhone 6S Battery connector is designed to work perfectly.
The image below use to present product is just for reference
actual product will be different from image.