Interactive Learning Device: A crank generator that demonstrates energy conversion and provides stable DC power for circuit construction kits, supporting practical learning in the classroom or laboratory and helping students understand renewable energies. Practical STEM Equipment: A practical learning kit that enables exploration of energy conservation experiments by illustrating electromagnetic induction; enriches science education experiences in schools or home laboratories and promotes deeper engagement with core physics concepts through handson experimentation. Compact Energy Solution: The crank generator features an ergonomic handle design for smooth operation, delivering reliable power for small motors with uninterrupted DC output to run miniature experiment tools during outdoor projects or classroom demonstrations with greater comfort and ease. AntiLeak Design: Its closed, insulated construction eliminates the risk of electrical leakage, ensuring safety in lowvoltage educational experiments for home and school that stimulate scientific curiosity. Use scenarios: Classroom demonstrations of energy conversion and renewable energy principles, using the crank to power simple circuits and observe how mechanical energy becomes electrical energy in real time. Studentled investigations into energy conservation and electromagnetic induction, employing the device as a portable power source for small experiments and demonstrations. Outdoor or homelab projects requiring a compact, portable power source to run small motors or DC circuits without access to traditional power outlets, enabling handson exploration away from the classroom.