Poweradd Pilot Pro 32000mAh Power Bank Dual USB Port 4.5A (9V-20V DC Output) with Digital LCD Display for Smartphones, Tablets, Pocket PC, Notebook, Chromebook, Macbook and More Huge capacity of 32000mAh, Provides 1 DC output for your laptop, and 2 USB port for 5V USB-charged devices. Various connectors cover major types of laptops and cell phones on the market, DC and USB outputs for charging a laptop and 2 5V USB-charged devices simultaneously, adjustable 5 voltage levels (9V/12V/16V/19V20V) suiting your needs for different laptop models (check detailed compatibility list below). Stylish and slim aluminum-body ensures good heat dissipation,the smart digital display window makes it easy to regulate voltage and know how much source you've got left. It will automatically shutdown when short circuit or overload output happen to protect your devices. Made of high quality reliable lithium-ion polymer battery cells, more than 500 recharge cycles during the course of its life. Package Contents: 1* Poweradd Pilot Pro 32000mAh external battery / 10*Notebook connector / 1*USB spring cable / 1*DC cable / 1*AC Adapter / 1x User manual.