Build a Power Bank in $2

Today I'm going to show you How to make a Power Bank in just $2 not believing?

Step 1: Features

Power Input

• 5v 2A via a micro USB

Power Output

• 5v 1A And 5v 2A Dual USB

Capacity

• It depends on how much battery you added

Safety Features

• Short Circuit Protection
• Over Voltage Protection
• Over Charge Protection
• Over Discharge Protection
  

Step 2: Things You Need

Banggood

• Charging Board Click
• Battery Holder Click
• Acrylic Sheet Click

Amazon

• Charging Board Click
• Battery Holder Click
• Acrylic Sheet Click

Aliexpress

• Charging Board Click
• Battery Holder Click
• Acrylic Sheet Click

Suggested Buy

• 18650 Battery - Click
• Vichy VC99 Multimeter - Click
  

  
  

Step 3: Where to Get Free 18650 Batteries

I used my old laptop battery to get the cells check the video down below

Click Here to See The Video

Step 4: How to Check How Much Capacity Is Left

I used a Battery Capacity tester to check the real capacity check the video down below

Click Here to See The Video

Step 5: Assembling Part 1

• I used 18650 battery holder to hold the 6 battery that I salvaged from an Old laptop battery
• After that, i used a thick wire to solder all the 18650 in parallel configuration

Step 6: Assembling Part 2

• I used dual sided tape to stick the battery and the Board to the Acrylic sheet

Step 7: Completing

• And then I soldered the 2 wire to the board ( see the image )

: Notice - Please be careful about the polarity

Click Here to See The Video

You Just Made It

Now just Plug the power and enjoy