1.power tool battery 2.Two Output Volt at same time 3.Long ... , 33000mah 4.charge laptop,pda,cellphone,camera,dvr,mp3.. power tool batteryThe products is a commercial portable power with high capacity ... build-in lithium battery, it could be used as back up power for a lot of devices and provide two output ... 6 hours, depending on the capacity and charging current; power tool battery