Unlike many commercial devices, this DIY UPS utilises 2 * 12 volt adapter. One for powering the Router and ONU, and the other for charging the batteries. The adapter connected to the female barrel ...

Welcome to my DIY project where I've designed a custom Uninterruptible Power Supply (UPS) for my home network equipment ... the other at 9V), alongside a router and an Optical Network Unit (ONU) that ...