Hello everyone I would like to buy this charger for the Xtorm Fuel Series 27000 mAh, 67W, 99.90 Wh power bank. My question now is, if I charge a "weaker" device with this charger, can I do this without any problems or can this lead to damage to my devices? For example, my Samsung Galaxy mobile phone or my FitBit tracker. Many thanks for your help.