... polymer Battery capacity: 3.7V 20000 mAh Output voltage:5V,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 ... : 3000 ma (max) Charge voltage: 100~240V AC/DC, Charging time: <3 hours ...