1.power tool battery 2.Two Output Volt at same time 3. ... laptop,pda,cellphone,camera,dvr,mp3.. power tool batteryThe products is a commercial portable power with high capacity build-in lithium battery ... same time,(the output voltage can be set as customer's demand in our factory ) , it could charge laptop , camcorder, ... about 6 hours, depending on the capacity and charging current; power tool battery