This small and affordable DC hand crank generator features a 5V USB connection port and can charge and power various electronic devices. Just pull the hand crank out and spin it; a red LED next to the connection port will let you know that you're generating power. The unit also includes a wrist strap to prevent breakages. Bring it camping, or have one around the house handy in case of emergencies or power outages.
Purchase the related USB to alligator clips adapter cable to power your science project circuits.
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