Mine: APC UPS, 1500VA UPS Battery... https://www.amazon.com/dp/B06VY6FXMM?ref=ppx_pop_mob_ap_share
I use a computer type UPS to power my CPAP and other essential medical stuff. Like this: https://www.amazon.com/APC-Battery-Protector-BackUPS-BX1500M/dp/B06VY6FXMM/ref=sr_1_4?crid=83155YU2EG56&keywords=ups&qid=1688406576&sprefix=ups%2Caps%2C550&sr=8-4
I have a UPS for the ONT in my basement and another for the main WiFi router (Eero 3-pack). This is the UPS I am using: https://www.amazon.com/gp/product/B06VY6FXMM/