This is original battery charger remove tha message

Hi Dahamanlefano,

Taking a look at, About genuine iPhone batteries

"An Unknown Part  message will appear if the battery installation is incomplete or if the battery:

• Was replaced with a nongenuine battery
• Was already used or installed in another iPhone
• Isn't functioning as expected

An additional message might appear that says "Apple has updated the device information for this iPhone." This means that Apple has updated the device information maintained for this iPhone for service needs, safety analysis, and to improve future products.

These messages don't affect your ability to use your iPhone or your battery."

Within iPhone parts and service history

"Depending on your location, you can get your iPhone serviced—in or out of warranty—by visiting an Apple Store or Apple Authorized Service Provider, or by shipping your iPhone to an Apple Repair Center. Independent Repair Providers also offer genuine parts by trained technicians for out-of-warranty parts replacements."

Take care.