Indeed, a French operating instructions clutched be welcome !!! Remarkable and load autonomy without problem identified. In terms of solar charging, after extensive testing, I found that it worked according to the following approach: By taking the double cordon DC provided, just place the cursor over 19V and connect the "DC OUT" to the "DC IN". Here, I have been testing this weekend and it allowed me to recharge from 75% to 100% !!! ;-))