Nikon Japan announced that they will no longer include the EH-7P charging AC adapter with all Z7/Z7II cameras due to parts shortage. It is not clear if this decision is only for the Japanese market or worldwide. The camera box should indicate if the adapter is included:
Here is the full translated text:
Notice regarding the end of the “Nikon Z 7II” and “Nikon Z 7” “main unit charging AC adapter EH-7P” bundled
June 29, 2021 Product information
Thank you for your continued patronage of Nikon products.
With regard to the “main unit charging AC adapter EH-7P” (hereinafter “EH-7P”) that was included as an accessory to the “Nikon Z 7II” and “Nikon Z 7”, we are now supplying semiconductors worldwide. Due to the influence of the problem, it is difficult to procure some electronic parts, so the “Z 7 II” and “Z 7” that previously came with the “EH-7P” will be bundled sequentially from Thursday, July 1st. We have decided to end.
As before, you can charge the battery with the “Battery Charger MH-25a” that comes with the “Z 7II” and “Z 7”, or connect it to your computer using the separately sold “USB Cable UC-E25”. In that case, the Z 7II can be charged using the recommended mobile battery *.
We will do our utmost to deliver better products to our customers, and we appreciate your understanding.
EH-7P bundled end target product:
Source: Nikon Japan (translated)