https://piggytube.piggy-server.org/videos/watch/94c9b2cd-8b2d-45bd-9db1-5451c1560bcb Discover Easy, Affordable, and Reliable PCB manufacturing with JLCPCB! Register to get $60 New customer coupons: https://jlcpcb.com/?from=cdd Special Deal: Get a $30 coupon for JLCPCB premium 6-layer PCBs: https://jlcpcb.com/6-layer-pcb?from=getcoupon 00:00 Introduction 00:53 Disclaimer 01:08 The Parts 02:37 Removing the cells 06:28 Preparing the cells 08:04 Combining the cells together 10:06 Ordering the PCBs 10:33 Balance charging the cells 12:42 Modifying & installing PCBs 13:23 Wiring up the USB board 15:07 Testing the Powerbank The open source repository (PCB files, 3D prints, Parts etc.): https://github.com/chrisdoelcreates/vape-power-bank NOTE: The following links are affiliate links Parts used in this video: USB Board (Type 1) - recommended Exact board used in this video https://s.click.aliexpress.com/e/_oBGOqhR Make sure to select the 5S version!, USB Board (Type 2) Has an extra type C port, but requires a different 3D printed enclosure (see the repository) https://s.click.aliexpress.com/e/_oBXyxIH Make sure to select the 5S version!, JST connector + wires https://s.click.aliexpress.com/e/_oEeP6lf Make sure to select XH2.54MM, Length 10CM, 4P, Conductive copper tape https://s.click.aliexpress.com/e/_olaCL05 Make sure to select '10mm' and 'Conductive on both sides', Cell Tester https://s.click.aliexpress.com/e/_onZAtrT, Programmable Load https://s.click.aliexpress.com/e/_oF0KDMZ, Soldering iron (TS80p) https://s.click.aliexpress.com/e/_olzGwtT, 3D prints: Files used in this video (for 13400 cells) https://www.printables.com/model/1147704-mk2-vape-cell-pack-pcb-a-40mm, For other sized 13mm cells https://www.printables.com/@montecha_2397581/collections/2035794, Selecting the resistor to set the power bank capacity: NOTE: This may differ depending on your board, double check the datasheet. Calculate the capacity for a single row Find the cell capacity in mAh (should be written on the cell). E.g. 550 mAh, Multiply it by 7 to get the whole row capacity. E.g. 7 * 550 = 3850, Multiply the capacity by 0.8. E.g. 3850 * 0.8 = 3080, Find an 0603 sized resistor with the closest resistance to the above number . E.g. 3000 ohms, Remove resistor R8 from the back of the USB board, Solder the new resistor on to R8 Wed, 23 Sep 2026 05:22:45 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://piggytube.piggy-server.org https://piggytube.piggy-server.org/lazy-static/avatars/92ad7bdd-6440-4318-8535-27765d598515.png https://piggytube.piggy-server.org/videos/watch/94c9b2cd-8b2d-45bd-9db1-5451c1560bcb All rights reserved, unless otherwise specified in the terms specified at https://piggytube.piggy-server.org/about and potential licenses granted by each content's rightholder.