Home Portable Power Bank

Materials:

TIN CASING

Used or old USB car adapter/charger

9 volt battery &battery holder for 9 volt battery

Electrical tape

MIRROR

MASKING TAPE & DOUBLE SIDED

TAPE

String

Phone holder SPRAY PAINT

Procedures:

 Attach the battery holder wires to the USB car adapter/charger. Make sure to connect the negative (black) wire to the negative terminal of the adapter and the positive (red) wire to the positive terminal of the adapter. Secure the connections with an electrical tape.

Cut a small square hole on the side of the tin casing where the USB adapter can be inserted

Put in place the USB adapter and secure it using an electrical tape.

Tape the battery in a secure area within the tin casing. Make sure that it’s not loose so it won’t fall off.

Attached the battery holder to the battery terminals.

Cut a square from the illustration board which fits to the cover. Then put double sided tape and masking tape to the one side.

If you have a phone holder you can add it by a string.

Add the mirror by double sided tape on the cover

Paint the outside of the final product

Place the cover over the tin casing to protect the materials

SCIENCE APPLICATION

• Simple Circuit• Voltage regulation

•Preventing from corrosion

THANK YOU FOR

LISTENING!