5G home internet keeps dropping

I know when the power is not to the router it turns off the WIFI radios and only maintains the cellular radios. I still am not convinced a software reboot would be as effective as using the switch on the back of the router. A software reboot via a script may only perform a soft reload not a hard reload. My guess is the switch on the router is there for that very reason, to allow for a hard reboot. If the battery is not disconnected to prevent power to the board then the soft vs. hard reboot are not 100% equivalent. I believe it would actually depend upon how clean a reboot must be to achieve a total restart. Sometimes a soft reboot is enough and other times a hard reboot is required. It comes down to objectives. If the LAN ports stay up when external power is removed then using a hard wired client to run a script could be used or in the case of external wireless connected to the router via the LAN with Ethernet cabling then running a script from a local client to reload the router should work fine. I run all my equipment on UPS backups to avoid possible damage during power outages due to spikes so I can maintain internet for a good bit of time even should a power outage take place. In rush of power after an outage can do serious damage to equipment. I know from experience with the problem from living in CA and being stuck with PG&E service. Outages with PG&E in CA have been a frequent and constant problem. Using UPS systems on expensive gear is really helpful.