Many of us all need pushing a cart in supermarket. Designer had installed a widget on the cart; it will be able to convert the kinetic energy into electrical energy when the card had moving and save it. Afterward transfer the storage energy to supermarket power supply center to provide the supply of electric of supermarket through transmission facilities when the cart back to entry. While the generated energy by a card is not much but as you know: the number of cart of supermarket is a large quantity and each was keep using in rush. Many a little make a mickle, it cannot be neglected.
Designers: Kitae Pak & Inyong Jung

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