... , 33000mah 4.charge laptop,pda,cellphone,camera,dvr,mp3... 19V lithium laptop BatteryThe products is a commercial portable power with high ... capacity build-in lithium battery, it could be used as back up power for ... other digital products anywhere anytime. **Specification:1. Built-in rechargeable lithium battery (33000mAH/3.7V);2. Input voltage: DC12.6V;3 ...