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Energie solaire sans batterie
Source google image: https://ae01.alicdn.com/kf/HTB19b_VKpXXXXbRXVXXq6xXFXXXd/Pirs-Portable-Syst-me-Solaire-G-n-rateur-Syst-me-D-nergie-Solaire-Sans-Batterie-EMS.jpg_640x640.jpg