Do you know how to make a Wi-Fi router battery backup? 🇱🇰

This video shows a UPS that can be used for a WiFi router. It can also be used as a power bank that can charge a phone. What is needed to make this device are some things that we can find very easily. If it is difficult to find the 18650 batteries used here, they can be salvaged from a discarded laptop battery.
It does not require a BMS because it uses a 12 volt charger. If you have a problem with this circuit, comment below. Like the video.. If you don't like it, unlike it.. See you soon in the next video. Thanks.
#mini ups
#WiFi router ups
#power bank
#experiment
#wifi
#12v ups
#mini ups sri lanka
#best mini ups
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