DIY Ryobi 18V One+ Powerstation

prusaprinters

<p>I have a bunch of different Ryobi 18V Power tools and an assortment of One+ Lithium batteries. I thought it would be great to make use of these batteries for other things. I decided to make a Power station that could charge USB devices and run 12V cigarette lighter socket devices. I also added an LED light for emergencies. It has room for 3 different sockets. I currently use one that has two 2.4A USB connections, another that has a QC 3.0 and Type C connectors, and a third that is a 12V cigarette light socket.</p><p>This can easily charge your cell phone or run a laptop<br/>You could use the 12V socket to run a small AC inverter or a CPAP machine when you are camping or traveling</p><p>Here is a movie of the build process: <a href="https://youtu.be/p9G_shkDBt4">https://youtu.be/p9G_shkDBt4</a><br/>An earlier prototype can be viewed at: <a href="https://youtu.be/rdvFLKf1roE">https://youtu.be/rdvFLKf1roE</a></p><p>I just tested all my Ryobi tool batteries for capacity. I used a load tester ( <a href="https://amzn.to/2SOyXcg">https://amzn.to/2SOyXcg</a> ) running at 10A/12V regulated load ( <a href="https://amzn.to/2SGAoei">https://amzn.to/2SGAoei</a> ):</p><ul><li>Ryobi 9Ah/162Wh P194 got 133Wh</li><li>Ryobi 6Ah/108Wh P193 got 98Wh</li><li>Vanon 6Ah / 108Wh got ONLY 58 Wh</li><li>Ryobi 4Ah/74 Wh P108 got 55Wh</li><li>Ryobi 3Ah/54 Wh P191 got 42Wh</li><li>Ryobi 1.5Ah/28 Wh P107 got 19Wh</li><li>Ryobi ?Ah/24 Wh P102 got 13Wh</li></ul><p> </p><p>Here is the parts list:<br/> </p><ul><li>Ryobi 18V 9Ah Lithium battery ( <a href="https://amzn.to/38oLFFm">https://amzn.to/38oLFFm</a> )</li><li>Bestek 300Watt Pure Sine wave AC inverter ( <a href="https://amzn.to/37kdnBQ">https://amzn.to/37kdnBQ</a> )</li><li>Ryobi 150-Watt Powered Inverter, with 2 USB Ports and One 120-Volt Outlet ( <a href="https://amzn.to/2Shahu1">https://amzn.to/2Shahu1</a> )</li><li>Ryobi 18V One+ Dual Chemistry Vehicle charger ( <a href="https://amzn.to/2vouV2n">https://amzn.to/2vouV2n</a> )</li><li>DC-DC 10A 12V buck converter ( <a href="https://amzn.to/2SjwSGn">https://amzn.to/2SjwSGn</a> )</li><li>cigarette lighter socket ( <a href="https://amzn.to/3byDuYX">https://amzn.to/3byDuYX</a> )</li><li>dual 2.4A USB ports ( <a href="https://amzn.to/31MaZ5x">https://amzn.to/31MaZ5x</a> )</li><li>QC 3.0 and type C socket ( <a href="https://amzn.to/3buZkwz">https://amzn.to/3buZkwz</a> )</li><li>toggle switch ( <a href="https://amzn.to/2uGV8ZU">https://amzn.to/2uGV8ZU</a> )</li><li>LED puck light ( <a href="https://amzn.to/2vmlSz8">https://amzn.to/2vmlSz8</a> )</li><li>Battery Leaf springs ( <a href="https://amzn.to/31KSCy5">https://amzn.to/31KSCy5</a> )</li><li>2.85mm ABS Filament 1kg for 3D Printers, Fluorescent Green ( <a href="https://amzn.to/38B0W6f">https://amzn.to/38B0W6f</a> )</li><li>Flexible 12 AWG Stranded Copper Wire ( <a href="https://amzn.to/38Ni1JW">https://amzn.to/38Ni1JW</a> )</li><li>3/4" strap / Heavyweight Polypropylene Webbing ( <a href="https://amzn.to/39Lom93">https://amzn.to/39Lom93</a> )</li></ul><p>As an Amazon Associate I earn from qualifying purchases.</p><p>Hackaday just picked up on this project and wrote an article! ( <a href="https://hackaday.com/2020/02/20/diy-power-station-puts-ryobi-batteries-to-work/">https://hackaday.com/2020/02/20/diy-power-station-puts-ryobi-batteries-to-work/</a> )</p><p>I went thru several prototypes making improvements on each one. That's the beauty of 3D printing. Quick turn-around to try new things!</p><p>Revision History (see photo):<br/>prototype -- tested battery connection<br/>prototype V1 -- functional test of DC-DC converter, USB ports / 12V cigarette socket<br/>prototype V2 - New tower shape with 3 socket holes<br/>prototype V2a - added handle strap<br/>prototype V2b - added second switch to turn all power off, thickened strap holder<br/>prototype V2c - lengthened DC converter opening, beveled edges, widened strap holder opening<br/>future improvements: label switches with icons, put switch notches in model</p><p>I put the 3D geometry model on thingiverse to make it easier to adapt: <a href="https://www.thingiverse.com/thing:4168822">https://www.thingiverse.com/thing:4168822</a><br/>(Didn't know how to load STEP file here :-( )<br/>You can try loading it from: <a href="http://howmuchsnow.com/batterypowersystem/ryobipowerstationV3c.stp">http://howmuchsnow.com/batterypowersystem/ryobipowerstationV3c.stp</a></p><figure class="media"><oembed url="https://youtu.be/p9G_shkDBt4"></oembed></figure><h3>Print instructions</h3><p>I don't have a 3D printer, so I borrowed time on my friends Airwolf printer. The prototypes were printed with ABS on a heated platform in a heated chamber. The nozzle size was 0.5mm and the build strength was strong.</p><p>Make sure you orient the model so that the strap holders are down on the printer bed.</p><p>I used a wood file to put notches in the switch holes for the clips and for the switch tab that clocks the switch. Other switches may not require this. I also add hot glue to the back of the switches once installed.</p><p>After inserting the battery spring clips and getting them aligned / tested, I use hot glue to secure/insulate them</p>