Google says the average new "Other" backups add 40MB. My Pixel 9's total added up to way less than that.

Google has started emailing Android users about its upcoming backup storage policy change that takes effect in 45 days.

Google is changing how Android backups use your Google account storage. Here's what the update means and how much extra space it uses.

While storage array snapshots offer quick, hardware-level data protection, they are not a standalone substitute for traditional backups due to limitations in protection, management and retention ...

They now count against your storage limit ...