... capacity 3.7V 54000 mAh Output voltage5V,3V~24V(max) Autput current levels: Can choose 5V(USB 500ma), 3V(150ma),6V(500ma ... ), 9V(1A), 12V(1.5A), 16V(4A), 19V(4A), 22V(4A) 24V(4A), Output current ... when the difference in temperature reached 120 centigrade Resistant high temperature >600c Material: Environment friendly ABS portable universal solar power bank for laptop