Trusted PCB Supplier ($2 for 10pcs 10*10cm): https://jlcpcb.com 
Previous video (LED Battery Level Indicator): https://youtu.be/rZq2v7two1s
EBike Battery Pack video: https://youtu.be/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 (schematic, parts list, pictures,.....) on Instructables: https://www.instructables.com/id/How-to-Create-a-Bookshelf-Speaker-Boombox/

Parts list (incomplete, see Instructables for more, affiliate links):
Aliexpress:
16x INR18650-25R Li-Ion Battery: https://s.click.aliexpress.com/e/_dWG3ujY
Nickel Strips: https://s.click.aliexpress.com/e/_dVFZDGW
1x BMS: https://s.click.aliexpress.com/e/_dTbDEUS
1x TPA3100D2 Amp: https://s.click.aliexpress.com/e/_dZWOpL8
1x USB Charger: https://s.click.aliexpress.com/e/_dYGGgJu
1x Audio Crossover: https://s.click.aliexpress.com/e/_d7ai5T8
2x Switch: https://s.click.aliexpress.com/e/_dV6143C
1x XT60 Connector: https://s.click.aliexpress.com/e/_d7rt0sn

Ebay:
16x INR18650-25R Li-Ion Battery: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337606358&customid=&icep_item=263668497036&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg
Nickel Strips: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337606358&customid=&icep_item=112529585368&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=5337606358&customid=&icep_item=401306837148&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg
1x TPA3100D2 Amp: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337606358&customid=&icep_item=263725139295&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg
1x USB Charger: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337606358&customid=&icep_item=232791262748&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg
1x Audio Crossover: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337606358&customid=&icep_item=180988917287&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg
2x Switch: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337606358&customid=&icep_item=181931855436&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg
1x XT60 Connector: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337606358&customid=&icep_item=122827868480&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg

In this project I will show you how I turned an old bookshelf speaker into an awesome portable boombox. It features a battery run-time of 100h, a battery level indicator, USB charging ports and a 20W amp. Those features make it perfect for all outdoor trips. Let's get started!

Thanks to JLCPCB for sponsoring this video
Visit https://jlcpcb.com to get professional PCBs for low prices

Music:
2011 Lookalike by Bartlebeats
Ecstatic Wave, Jens Kiilstofte 
https://machinimasound.com/music