54000mAh Movable Power Bank, powerful, portable and safe power charger for mobiles and laptops with various adapters. 54000mAh Movable Power BankFeatures: Battery material Lithium ion polymer Lithium ion 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), ...