You can replace the battery of your iPhone XS in any Official Technical Service, in any workshop in your neighborhood or perfectly at home by following the instructions in this video.
Battery HERE https://s.click.aliexpress.com/e/_ASaEJU
️Tools HERE https://movilone.eu
Cover Case HERE https://s.click.aliexpress.com/e/_9xBcdG
Hydrogel Film HERE https://s.click.aliexpress.com/e/_ABz5P4

To carry out professional work, you must use original Apple parts. The cost of replacing a battery depends on the device model and whether the problem is covered by the warranty or not. In our Technical Service we offer a three-month guarantee on the change of any battery.