Powering Corded Tools w/ Cordless Batteries is Stupid (but fun)

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Published 2023-12-22
M18 3600W Inverter: amzn.to/47U66c3
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Can we turn our backpack stack of power tool batteries into an inverter that powers corded tools? Are there better options? What if you don't want to pay the crazy prices they ask for matching batteries? Today we try and make corded tools a bit more mobile and have some fun along the way.

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As always, the creator of this channel works in product development for Astro Tools, always consider multiple sources when looking at a tool!

All Comments (21)
  • Those commenters dont know what they're talking about. I love the jank, sketchiness and creativity of your build videos
  • Anyone calling these builds stupid lacks the ability to read between the lines. The engineering alone is enough to learn from, regardless if it's actually useful or not, the point is to find out. I'm not necessarily expecting peak performances but I enjoy seeing what you find to be the minimum required wire or battery size to perform at all. The differences in battery performance from one brand to another is interesting as well. Showing people they can simply notch an adapter rather than have another one made is another little tidbit of info to keep in the back pocket. I did that back in the day with some batteries themselves to fit certain tools and they worked fine. Love the vids man. Thanks. Merry Christmas.
  • @Surmoka
    For many tools with older motors, you don't even need an inverter. Universal motorbs run on both AC and DC, and even a little better on DC.
  • @Troyvidihoo
    I just want to say that I didn't think the idea was stupid! Before I had cordless versions of certain tools I was making my own cordless tools, but before that I actually had connected packs in series so I experiment to run my corded tools, Way back in the Days of nicds so you can imagine I had no long runtime like that we have today. Which brings me to my point that you could just run six 18/20V batteries in series and you would have 120 volts DC which is actually going to be a lot more effective than inverting because the universal motor is more efficient with DC than it is with AC, and as you noted by far and away most power tools are universal motors, not to mention the inverter is the bottleneck in this situation. Enjoyed the video!
  • @MrEnginerd
    As others have suggested: Definately try running the saw on DC. No AC conversion needed, but how much torque will it make at what voltage?
  • @Tomd4850
    "here's your friendly toaster oven"... plops down a $300 Breville 🤣🤣 I do have the step up from that one btw; its preset settings makes great work of pizza and cookies!!!
  • @rasturnel
    Corded tools have universal motors. They run on AC and DC as well. Here comes the sketchy part, put 6 20v batts in series for 120v. Or 7 for some extra juice.
  • Not only are the stats and specs right on par, your sense of humour and the quality of your funniness is right there also!
  • "Let's see what you're gonna share the blame in today" perfectly condemns the haters. Bring the beans.
  • @ThriftyToolShed
    I will take the blame! I love it 😂. I actually have an older video using 2x 56V EGO packs to run some 120AC tools that still use universal motor to this day. It will work, but the switches are the failure point as can be expected unless AC/DC rated. Keep up the fun videos. Merry Christmas and Happy Holidays!
  • @leoionita8083
    These kind of videos are so fun to watch. I'm really enjoying the backyard engineering stuff. I stumbled across this channel right about when it was just starting out and I've been watching it since. It encouraged me to get a makita impact wrench even though as a plumber I don't really use it that often. Keep up the good work guys. You make awesome videos. Greetings from The Netherlands!
  • @thephranc
    There are many secure locations Ive worked in that had no allowed outlets. This would actually usefull there or when working in the center of an unfinish massive Wearhouse space.
  • I can't imagine how nice it would be if all brands had the same battery platform so you could use it all together
  • @Large_Sarge
    There will always be cranky people out there. None of this is stupid. Thank you for sharing and giving us a good content. Love it.
  • @JT-lq4yd
    I am here to see all the crazy being hacked, zipped tied, glued together stuff. It's just awesome 👌 and never enough.
  • @BenBrand
    Don't the motors in circular saws and miter saws run on AC or DC? I was hoping you were going to stick six of these 20 volt batteries in series and run them direct on DC. That way you wouldn't have all the losses in the huge heavy bulk of the inverter system. Edit: to be clear, I know they're not advertised as being able to run on DC but the type of motor that it is I think can
  • @grayphox
    I watch these builds while I build silly things. Makes me feel less alone
  • @FacilitiesDIY
    Y’all’s creativity and then ability to execute your ideas is immaculate. Hercules just came out with a 2nd Gen. of their compact impact wrench. Still crazy high numbers but I’d love to see if it’s a step up from the previous generation. Test it please!
  • @TranTek
    This M18 inverter is a beast the only one able to handle my 1994 Maytag washer and dryer Not a Ecoflow, Bluetti can even get the motor to spin i Love it