All People who have WIFI  connection knows their WIFI goes down whenever the power goes out. It is annoying when you are in an important meeting / webinar with Zoom, WebEx, or MS-Team, and there are interruptions due to power outages.

I have a solution for you this amazing DIY wifi router ups circuit. This circuit have automatic switching option between the Power supply and battery pack and this mini ups for wifi router circuit diagram is very easy to make. Backup time of this wifi router ups is 8-10 hr so you can use this mini ups for long duration without any issue.