Use your dath smartphone battery as led light

You can use you old smartphone battery as an emergency led lighting to light you can easily use in dark place and home room


First you need 4 small led bulb a 20 ohm rajistance some wire to connecting

Cannact two wires to battery positive and negative tarninal and cannect led perelar each other and cannect a resistance to positive tarminal of led you can arrange led like this