BASE Power explains how to test your battery/batteries and simulate an outage.
I just received an email from BASE Power... "Welcome to Base"...
Note: I signed up in May and got my batteries 7/15/26.
The email has all the standard stuff I already knew, but also a link to a web site with specific instructions of how to shut down grid power to simulate an outage and test your battery or batteries:
https://help.basepowercompany.com/en/articles/10281473
Also, in case you were not already aware, besides sharing your referral link, you can also make $50 by posting on social media: "Post about your experience with Base in your community social group on Facebook, Instagram, Nextdoor, or X, and include a photo of your battery." Then share the post with BASE Power via email.