Charging a battery while installed in a doorbell or stick-up camera

I bought a stick-up battery camera and added a wired-camera kit with the understanding that if my home's power failed, the camera would revert to battery power and keep working. I am in need of replacing a wired Ring doorbell and wanted to do the same thing, but customer support informed me they don't work that way. I would have to go into the app and switch the source from wired to battery. Or if the power has already failed, remove the battery cover and push the orange button and reinstall the camera as a battery operated camera. I live in Florida. How in blue blazes am I going to do that when there are 100+mph hurricane winds and it's raining cats and dogs outside (and maybe inside)? Why on earth didn't you design it to simply switch from wired power to battery automatically, on its own, when it loses power? Before you say "because it was designed that way," or "that's the way the engineers designed it," my question is WHY? And don't tell me it's some engineering marvel that has yet to be invented or is too expensive. Aircraft exit path lighting. Those batteries provide power to light the cabin aisle exit path lights when the airplane's system loses electrical power in an emergency. If in a non-emergency, for example at the gate if the electrical power provided by the unit on the jet bridge fails and the emergency lights come on, but power is restored in 5-10 minutes, the batteries will automatically recharge. Why didn't you design your cameras like this? Could this be remedied with a software patch/update?