I am looking for a solution to provide internet connectivity to my iot device through a router which would not be affected by power failures (of no more than 3 hours).
The options that I can see are the following:
- use a standard UPS and plug the router wire on it.
- use a 12v mini ups (which could replace or intercept the router's wire)
- use a portable router (always connected to the power supply)
My question is: would the 3rd solution destroy the router's battery after some months? I hope that there exist some routers that can protect their battery from prolonged plugging to a socket. But I don't know how to search this feature.