Great 20000mAh Multifunctional Portable Battery Charger At a Glance... Incredible 20,000mAh of power Charges most electronic devices AC 100-240V for worldwide use Low standby energy consumption Compatible with over 6000 laptops Built strong with high grade components Great as a backup battery for your laptop Eight power tips included for major laptop brands Five power tips included for major cellphone brands Low factory direct price makes it great for resale market Overload protection and short circuit protection safety features Manufacturer Specifications Primary Function: Universal battery charger 20,000 mAh Output Power: 20,000 mAh 74W (max) Safety Features: Overload protection Short circuit protection Overcharge protection Overdischarge protection Input Voltage Range AC: 100-240V, 50-60Hz Input Voltage Range DC: 14-24V Output Voltage: - DC 12/16/19V - DC5V (USB Port) Power Adapter Cord Length: 120 Inches Power Adapter Dimensions: 177mm x 114mm x 25mm Manufacturer Ref: SS058F2SR5D Product Notes: Has built-in voltage selection button and LED indicator that displays the current voltage setting and charge status. This charger does not charge USB devices that use USB power as a secondary power source. For example, if your device has a main power supply that is not a USB connection, then you will not be able to use the USB port to charge that device. Instead, you will need to use one of the supplied adapter tips to charge that device. The included laptop adapter tips come in the following sizes: 4.0*1.7mm / 4.75*1.7mm / 5.0*1.0mm / 5.5*1.7mm / 5.5*2.1mm / 5.5*2.5mm / 6.3*3.0mm / 6.0*1.0mm. We can not guarantee compatibility with every laptop or electronic device. Please check the power connector size of your device first. Package Contents for Model CVPP-S18: Universal battery charger 20000 mAh 8x laptop adapter tips 5x cellphone adapter tips USB to laptop adapter tip cable USB to cellphone adapter tip cable AC/DC power adapter 100-240V User manual - English FAQ - Frequently Asked Questions Can I get my company logo printed on the S18? Yes. If your bulk order is more than 150 we can get your company logo or name printed on this product. Will this product work in the USA? Yes. This product will work worldwide. How long does it take to charge the battery? About 6 hours. How long will it extend the battery life of my laptop? About 2-4 hours depending on your computer's power consumption. What are some popular laptop brands this charger will work with? Acer, AMS Tech, Averatec, Compaq, Dell, Fujitsu, HP, Gateway, IBM, NEC, Panasonic, Sharp, NEC, Sotec, Toshiba, Winbook, Hitachi, ASUS, MEDION and EPSON just to name a few. Can I use my own adapter tips with the S18? We definitely do not recommended it. However, if the tips fit into the S18 then it should work just fine.