i will show how make a rechargeable emergency LED lamp.
All you need is a powerbank rechargeable from USB ( i show you 2 type of these powerbank , but you can use any rechargeable powerbank which are sold on market and have at least one USB port) and an USB LED lamp.
Step 1: Connect and Use
All you have to do is to connect the USB LED lamp at powerbank and you have light , a steady and good light .It last a long time , depend only by capacity of your powerbank and how much is charged .
Step 2: Enjoy With This Simple Solution!
Simple! No more fancy torch or some special lights.
Use this solution for home and emergency , You can also charge your phone or tablet same time if you have on your powerbank at least one more USB port .
Keep your powerbanks charged and you never stay in dark .