Emergency Power Bank(DIY)

About: love science and technology

Hi friends

In this instructable we are going to see how to make a power bank out of AA batteries

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Step 1: Things Required

  1. battery box
  2. AA battery
  3. OTG cable
  4. USB charging cable

Step 2:

solder the battery holders together to form a 4AA size holder

Step 3:

Then solder the battery box with OTG cable

Step 4:

Now place the battery on the battery box

Step 5:

Now connect the phone with the USB cable

.Then you can able to see the phone is charging

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