Genius Factory Deluxe Hand Crank DC Generator 15V with High Low Output Switch for Stem

Deluxe Hand Crank DC Generator with High/Low Output Switch - Perfect for STEM Experiments Requiring up to 15V DC Current. This generator is a user-friendly and portable solution for students and educators. The Deluxe Hand Crank DC Generator also includes a convenient Low and High Output switch that enables power limitation, ensuring the protection of LEDs and light bulbs from damage due to excess current.

Small and economical DC hand crank generator 5V USB connection port Charge and power your electronic devices No batteries required, wrist strap

xUmp Economy DC Crank Generator - USB 5V

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Deluxe Hand Crank DC Generator with High/Low Output

Electricity learning: Learning the mechanical principles of hand-cranked generators and how to use kinetic energy to generate electricity is a safe interactive experience. Educational model: Through this DIY kit, children can exercise their hands, thinking, exploring and creating skills, build a toy that lights up LEDs and drives motors by hand, and learn the principle of conversion between energy.

QWORK Hand-cranked DC Generator, School DIY Dynamo Lantern, Demonstration Motor DC Electric Generator, Assembled Hand-cranked Generator, Motor

This set comes with one pair of jumper cables with clips at each end for quick and convenient connection This hand crank electricity generator could

Hand Crank Driven Electricity Generator, 12v Power Emergency Charger, Portable Emergency USB Charger Generator, for Outdoor Camping Survival

High Power Hand cranked Generator, 20W Portable USB

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Miniature Generator Motors, 5V-24V DC Hand-cranked Generator for DIY Toys Wind Turbine Generator Hand Cranked Power Generator,Dynamo

Miniature Generator Motors, 5V-24V DC Hand-cranked Generator for DIY Toys Wind Turbine Generator Hand Cranked Power Generator,Dynamo

Hand-Crank DC Electricity Generator DIY STEM Kit by

Deluxe Hand Crank DC Generator with High/Low Output

Portable hand cranked generator, can be used as emergency power supply. High power USB charging generator, strong power generation. Solid structure,

High Power Hand cranked Generator, 20W Portable USB Charging Emergency Dynamotor, Low Noise, for Field Operations/Survival Training/Emergency