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Panneau solaire 12v marine
Source google image: https://ae01.alicdn.com/kf/HTB1BE6EbzihSKJjy0Fiq6AuiFXaL/Panneau-Solaire-100W-Batterie-Solaire-PWM-Regulator-Controller-12v-24v-30A-Solar-Light-Marine-Boat-Yacht.jpg