Homemade 5000 MAh power bank with mobile battery | from mobile battery.

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Another war to make a powerbank

REUSE YOUR OLD MOBILE BATTERY TO MAKE KEY SIZE POWER BANK

As we know to charge any mobile we need 5V , so we have old mobile battery of 3.7V & rechargeable cell of 1.2V it will together produce 4.9V which is sufficient to charge any mobile.
Therefore, here we introduce key size power bank which can charge any mobile wherever you want.

Step 1: MATERIALS REQUIRED

1 Old Mobile Battery (3.7V)
1 AA Rechargeable cell (1.2V)
Connector
Wire
Switch (micro-slide switch)
Lots of tape

Step 2: MAKING

Attach a mobile battery to the rechargeable cell with the help of tape. Now we have to attach the wire from ‘+’ terminal of rechargeable cell to the ‘-‘ terminal of mobile battery.
Attach the separate wire ‘+’ terminal of mobile to the side terminal of the switch. And then take the other wire and attach it from the middle terminal of the switch. ( it will be positive line of power bank)
Now we will take the separate wire which will be attach from ‘-‘ terminal of rechargeable cell. ( it will be negative line of power bank)

Step 3: FINALLY YOU CAN CHARGE YOUR MOBILE

Take the connector which will consist of two line – red line (‘+’ line) & other line (‘-‘ line).Now, the positive line of power bank made earlier will be attach with the connector carrying positive line & negative line of power bank with the negative line of connector.

Step 4: FINAL STEP

Cover the whole material with the tape. You can cover your power bank with any type of box ( plastic or cardboard) to make it more attractive .
This device can charge anything which charges with 5V.

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