... laptop Battery 2.Two Output Volt 3.Long work hour, 33000mah 4.charge laptop,pda,cellphone,camera,dvr,mp3... 19V lithium laptop ... capacity build-in lithium battery, it could be used as back up power for a lot of devices ... anywhere anytime. **Specification:1. Built-in rechargeable lithium battery (33000mAH/3.7V);2. Input voltage: DC12.6V;3 ... the capacity and charging current; 19V lithium laptop Battery