... 2.Two Output Volt 3.Long work hour, 33000mah 4.charge laptop,pda,cellphone,camera,dvr,mp3... 19V lithium laptop BatteryThe products ... :1. Built-in rechargeable lithium battery (33000mAH/3.7V);2. Input voltage: DC12.6V;3. Input current: 5A max;4. Output Voltage ... :about 6 hours, depending on the capacity and charging current; 19V lithium laptop Battery