Светодиодный светильник на 5V от USB. Простой светильник из светодиодов если выключают свет

I'm building an LED light fixture to illuminate a room when the power is out. In winter, we often have power outages, so an energy-efficient LED fixture would be a great idea. I'm using only two 5050 LEDs for this fixture, and it draws 13mA. Three or four LEDs could be used, but that would increase the current consumption, which I don't like. These fixtures are sold on AliExpress for next to nothing, but I don't know their current consumption. This one is all about LEDs:    • Светодиоды   My channel libral1973:    / libral1973   Homemade spray gun:    • Самодельный краскопульт   DIY anchor:    • Якорь своими руками   DIY wire finder:    • Искатель проводки   How to make a wire puller:    • Как сделать съемник своими руками ( The pu...   #libral1973 #DIY