usual since upgrading ios which may affect battery life

Hi Roomone1,

Thanks for reaching out about battery life on your iPhone. We can help with this.

If the battery life of your iPhone isn't as good as it was before the update, this can be expected behavior for a short period of time while the background processes finish updating.

You may also want to make sure you're maximizing the battery life by following these steps :

Maximizing Battery Life and Lifespan

Take care.