How to make Power Bank

How to make Power Bank
https://www.youtube.com/watch?v=gY4EM5k7N-4





How to Make Power Bank DIY  Manmohan Pal
in this video I am going to show you how to make a powerbank by simaply using a 4 volt battery and a buck converter, power bank is facilitated with input and output led indicators, easy to make and easy to use,


This video will clear following key points,

how to use power bank,
how to use diode to charge battery,
how to install charging LED indicator,
how to convert 4 volt to 5 volt,
how to make 4 volt battery charging circuit,

can be used as a powesupply for arduino projects, the buck converter we are using can convert 4 volt upto 40 volts.

we can make it using  old mobile phone batteries,

video is helpful to repair your old powerbank,


How to make a powrbank using a buck convreter
https://www.youtube.com/watch?v=gY4EM5k7N-4

Make a Power Bank DIY- Use of Old Mobile Phone battery - by Manmohan Pal
https://www.youtube.com/edit?o=U&video_id=OAMiToDWHF8