SunJack 45000mAh Portable Charger External Battery Power Bank (5V/12V/16V/20V) for Laptops, Tablets, Smartphones ULTRA HIGH CAPACITY - 45000mAh/166.5Wh charges an iPhone 7 up to 22 times, tablets up to 6 times, and laptops up to 3 times. Fully recharges in 7 hours via DC or 23 hours via USB. All IN ONE FAST CHARGE - 3 Output Ports: One 3A 12V/16V/20V for Laptops and Digital Cameras, One 5V/2.1A and One 5V/1A for most Smart Phones, iPads, Tablets and USB powered devices. Charge multiple devices simultaneously. LIGHTWEIGHT & PORTABLE - Weighs under 2lbs and is slimmer and lighter than most other batteries of a similar size. Includes convenient carrying case. WIDE COMPATIBILITY - DC output provides 20V, 16V, 12V at 3A Max (max power 60W). Comes with 13 different connectors; compatible with most laptops and notebooks: Acer, Asus, BenQ, Compaq, Dell, Fujitsu, HP, IBM, Lenovo, NEC, Samsung, Sony, Toshiba and more. INCLUDES - 1x 45000mah Laptop Power Bank, 1x USB Cable, 1x DC Adapter, 13x Laptop Charge Connector, 1x Carrying Case, 1x Manual, 12 Month Hassle Free Warranty. Macbook connector sold separately. Press the power button to turn on the power bank. 3 indicators (12V, 16V, and 20V) on the left tell you current output voltage on the DC port. 4 indicators on the right side tell you remaing battery life. Keep pressing it to switch between different voltages*,blinking blue light tells you what voltage it is on. Please make sure it matches your device. 13 connectors included, identify the correct size** and plug it in your laptop to start charging. There are two USB outputs. Both ports can output simultaneously. One battery life indicator flashes when battery is low. Plug it into either DC (takes about 7 hours at the highest input) or USB (takes about 23 hours at the highest input) to recharge the power bank. 5.5mm x 2.1mm 5.5mm x 2.5mm 5.5mm x 3.0mm 4.5mm x 3.0mm 6.3mm x 3.0mm 6.4mm x 4.4mm 4.8mm x 1.7mm 5.5mm x 1.7mm 4.0mm x 1.7mm 7.9mm x 5.5mm 7.4mm x 5.0mm 7.5mm x 5.0mm Lenovo square plug