Description:Charging input: 16V-24V/1.6A( the power cable connector dimension:5.5*2.1-2.5mm)DC output: 12V/15V/16V/19V/21V = 3.3A ( MAX ) ( with current limiting and temperature protection)USB port output: 5V/=2.1A（max）Total output power : 75w(max) , DC port:65w(max)can install 6 18650 battey or 3pcs(must install alternation unprotect battery)support most laptop below 19v/4a, Usb port:25w(max) support most Tablet PC.phone.10 voltage output for chosenDigital voltmeters head , intuitive, accurate display of the battery voltage, the output voltage.Dimesion:162mm*82mm*22mm L*W*H color: white Pls note :don’t included the battery and the cable Useful information:Polarity of the batteries must be correct.LED showing 12.4-12.8 means batteries are fully charged.Charging time required: battery capacity x number of battery x 1.5 / charging current.Charging time would be affected by diameter of the charging USB cord.For notebook users:The item can be used in three ways with notebooks:1. Put fully-charged original battery in the notebook and connect the item. The notebook will first consume the item’s power, and then consume the original battery’s power.2. Take way the original battery, and use the item to power the notebook.3. When working as a UPS, connect the original power adapter to the item, and connect the item to the notebook. Upon power outage, the item will respond in less than one second.Ideal for use with mobile phones, tablet PCs, notebook computers, music players, game players, digital cameras, etc. Contact usReturn PolicyFeedbackContact us For anything problem about product, price, shipping or order status, pleasecontact us via eBay message.Just contact us using the «Ask the seller a question» link on eBay. We expect positive feedback and 5 scores DSR from you. Return Policy We believe our items are so outstanding. We are convinced you will be happy with your Purchase. If you do not satisfy with our items. Please simply return to us within 30 Days in original condition. Just pay for the returned postage. Then we can issue full refund to you after the returned item arrived at our warehouse. Please include your eBay ID and item number with any email requests. Feedback * When you satisfied with our product and services please leave us positive feedback. * If you have got the package, please confirm «Delivery on time» For us. * If a problem occurs, contact us immediately with any email request. * Just contact us using the » Ask the seller a question» link on eBay. Your Satisfaction is our Priority. Our goal is to make all our customers as happy as possible while shopping with us.