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Panneau solaire 5v 2a
Source google image: http://shop.windowsphonecorner.com/wp-content/uploads/2014/08/Anker-14W-Chargeur-Solaire-Portable-Double-Ports-5V-2A-Pliable-et-Facile–Transporter-Compatible-avec-iPhone-iPad-Apple-Appareils-et-Galaxy-S5-S4-Samsung-Appareils-et-Plupart-des-Android-Phones-Androi-0-1.jpg