Ben disons 2H d'autonomie ... sous 12V ... a 15Wh ça nous fait une batterie 12V 2500mAh minimum tout de même 
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Hello IT ... Have you tried to turn it off and on again ? ... The button on the side, is it glowing ? ... Yeah you need to turn it on ! ... The button turns it on ? ... You DO know how a button works don't you ! ?
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