$2 for PCB Prototype & 24 Hour Quick Turn: https://jlcpcb.com/ Previous video: https://www.youtube.com/watch?v=trrjQ4cN2Bc EBike Battery Pack video: https://www.youtube.com/watch?v=b2sBhDxmPmA Facebook: https://www.facebook.com/greatscottlab Twitter: https://twitter.com/GreatScottLab Support me for more videos: https://www.patreon.com/GreatScott?ty=h More project information (wiring schematic, pictures, ....) on Instructables: https://www.instructables.com/id/DIY-Laptop-PowerBank/ Parts list (incomplete, see Instructables for more, affiliate links): Aliexpress: 16x INR18650-25R Li-Ion Cell: https://s.click.aliexpress.com/e/_d6ri0or 1x BMS: https://s.click.aliexpress.com/e/_dXrLJ6X 1x LiPo Voltage Tester: https://s.click.aliexpress.com/e/_dUTvD19 1x Current/Voltage Monitor: https://s.click.aliexpress.com/e/_dY9f0UX 1x Boost Converter: https://s.click.aliexpress.com/e/_d7pv5aR 1x Buck Converter: https://s.click.aliexpress.com/e/_d9bTT6r 2x DC Jack: https://s.click.aliexpress.com/e/_dXZeR8b 2x DC Jack Connector: https://s.click.aliexpress.com/e/_d8OHOx9 3x SPDT Switch: https://s.click.aliexpress.com/e/_dYWkMuB Ebay: 16x INR18650-25R Li-Ion Cell: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=362532112993&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 1x BMS: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=153247639816&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 1x LiPo Voltage Tester: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=142650372421&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 1x Current/Voltage Monitor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=173018633475&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 1x Boost Converter: - 1x Buck Converter: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=311164183684&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 2x DC Jack: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=182603218327&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 2x DC Jack Connector: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=253107974183&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 3x SPDT Switch: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=201414875998&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg In this project I will show you how to create a Laptop PowerBank. It mainly consists of a Li-Ion battery pack and one buck and boost converter. This way the PowerBank can get charged up through the Laptop power supply and aftewards charge up the Laptop directly to give it an additional run time of 3 hours. Let's get started! Websites which were shown during the video: http://www.ti.com/lit/ds/slusak9/slusak9.pdf https://www.ti.com/lit/ds/symlink/tps51211.pdf https://drive.google.com/file/d/0B5ce5vDCG1uyZFlNa1hHdmFyYWs/view Thanks to JLCPCB for sponsoring this video Visit https://jlcpcb.com/ to get professional PCBs for low prices Music: 2011 Lookalike by Bartlebeats Killing Time, Kevin MacLeod (incompetech.com)