Do you want to make your own Power Bank? If yes then this blog is for you. In this blog you ill get full guidance about how to make a power bank at Home. Its More Cheaper in cost and more reliable than commercial available power bank.
Now to we will going to make a 12000 MAH power bank with 3 USB port for charging.
For making your own power bank you need -
Power Bank Circuit + Case ( Purchase Link - https://www.myinnovation.in/product-page/power-bank-case-circuit )
Power Bank Battery - ( Purchase Link - https://www.myinnovation.in/product-page/5-pcs-samgsung-power-bank-battery )
Solder Iron ( Purchase Link - https://www.myinnovation.in/product-page/solder-iron )
Connection is very simple. You need to connect the Battery positive to Circuit positive and battery negative to circuit negative. Now this is for a single battery. If you want to connect more than 1 battery then connect every battery positive to single connection and every battery negative to a single connection. Now that positive connection will be connected to circuit positive and negative connection will be connected to circuit positive.
Now Some points You need to remember -
Battery positive & negative should not touch each other
if you use 2 pcs 2400 mah battery then total mah is 4800. for 3 pcs its 7200mah.
battery should be 18650 lithium ion battery model.
Double check the solder whether it loose from battery or not.