Super awesome idea, and super cool to look at, is it practical? Nah, I wouldn't be surprised if you end up being able to get these super cheap after a year of failure to move the inventory. I need a backpack full of batteries said no contractor ever, he's going to grab his corded if he really is in a hurry and needs to get the job done. This is the complete opposite of having a "cordless" tool. If I have a choice between the backpack full of batteries or plug it into 110v, I'm going to reach for that outlet every single time. That added boost in watts, isn't worth the inconvenience of not being able to move around freely.
A simple high current diode on each battery would prevent batteries from feeding back into each other Edit: please read the replies before adding another about how wrong I am, and that "ideal diodes" are needed instead.
@@TorqueTestChannel You can get pretty massive schottky barrier diodes for massive currents. They have less losses and voltage drop than a normal PN/Silicon diode. :)
Back when lithium primary batteries came out, we ultra runners quicky found out about not mixing fresh and partially used batteries in our flashlights.
Tim Taylor would be proud... Seems like Bosch has implemented the same "that's quite enough amps, thank you" system that Makita has on some of their tools.
as they should if they want to avoid milwaukee/dewalt smoke scenario :) yeah it's nice to win short tests, but in the real world usage scenario tools not smoking up is more desirable imho.
you could always just gee i dont know, design your tools for the future? considering milwaukee and that m18 high torque is "the best" for 10 years they should over engineer the mechanical aspects and match the wiring to do the same. that would help for when batteries get more powerful. or just redesign tools as batteries improve. @@riba2233
@@riba2233 looks like the 150mm grinder has a current limit. 1150 vs 1160 watts is basically the same, but 4x12ah got noticeably more RPM under load than the Forge. Circular saws are hard to overload as the gullets of the blade fill up, which limits how fast you can remove material, which limits how much torque you can put on it. Still, no current limit is a very Milwaukee thing to do.
Can't say subscriber numbers was ever a main goal of ours, which is why we don't ever really mention subscribing during videos. As you say, the info (or fun in this case) gets around so that's the goal!
Subscribers used to mean something on YT, but these days it's more about watch time and engagement (comments, like/dislike) It makes sense when you have many channels with millions of subs, but their views are less than 10% of that on most videos. Then you have some channels with maybe 10K subs, but millions of views on some videos. TTC seems to be in the sweet spot. Their videos seem to settle around 25% of their sub numbers at their lowest, but spike higher up to 100%+ on some videos. That tells me they have retention regardless of subs. People watch because they are genuinely interested and not because of some "to-do list" curated by RUclips's subscription system. I wouldn't be surprised if even on TTC's lower performing videos, their views from people not subscribed was still over 50%.
That Milwaukee Forge battery is seriously impressive. It took 4 Hercules 12hr batteries to de throne it on the dyno. You really do get what you pay for
I’m surely but slowly moving towards Milwaukee. I’m still using Milwaukee’s lil bro Ryobi. Ryobi did last me longer than I thought it would. Already slowly growing out of them.
You had me in the first half, not gonna lie. I was ready to go to amazon and buy an official DeWalt battery backpack right now. Kudos for getting me so good. Good day sir!🤣
I love how, in the end, he just threw some more nylon straps on it to hold the janky plastic door in place. Man, Hercules uses quality cells... that is a truly great bit of information.
This is a throwback to the Black & Decker ThunderVolt. I have some of the pieces to this ancient system. 24v remote battery packs(lead acid!) power multiple tools.
20 years ago I made a fanny pack battery for a Hilti SDS hammer drill to be used by guys opening climbing routes. Was small 6v gel cells for storage and built a fold out solar panel for charging. Ended up being 18v 48 ah battery that they hung over their butts. I enjoy this back pack completely.
@@KHALABEEB like around 20 lbs. Pretty energy dense for the time. 9 × 6 v at about a pound and a half each. Did 30xs the holes the original nickel cadmium could do. Had a loop to hang the drill from on the pack and a 10 gauge cable hooked right to the trigger with a wheelchair disconnect on the pack side. All off the shelf BMS batteries. Was cheaper than a the bigger OEM replacement battery. Made the drilling easier having the battery weight on the body too.
I love the visual of the Dring Millwaukee and the power pack. It's like ghost busters meets Bane/HD diesel mechanic or HD tire and wheel tech. Show up to the repair yard with that and just blast wheel assemlies off semis all day while a bunch of teenagers run around in a panic trying to keep up doing the mounting and balancing.
dude. i was at a u-pick the other day and someone was running around with a pack like this just ripping parts off. his two buddies would just hold the part so he could rip through the bolts, then they'd throw it into one of the two wheelbarrows they had. rinse and repeat and before long i'd heard his uggas all over the place long after my battery had died.
Brings back memories of the commando belts for Ni-Cd tools years ago. I don't know if anyone remembers them, but you could build your own Ni-Cd string for you voltage tool and simply wire it in using the old battery housing as a shell. Like an Army ammo belt or shoulder sling. They worked really good compared to the orginal packs and also kept the weight accross your waste or chest. It was nice while working off of ladders or scaffolding.
I really feel like you could be my new best friend. I have shown this video to all of my family and gotten simply a wide eyed blank stare back with a single word 'no' Thank you for putting out content like this, it helps me prove to everyone around me that I'm not just a wierdo with a shop in his garage that sometimes catches things on fire.
This episode just made me happy! I couldn't stop smiling while watching it. Watching the graphs is cool is and all, but watching the creativity of your channel and the projects you decide to do for fun is where I really find the most joy. Also, please the Fenix PD36R Pro when you test high-end flashlights. Thanks!
Stacked pouch cell power tool batteries don't very much enjoy being pulled from old school +/- style. Just getting a voltage drop from them on a load tester takes a lot of tries. I'm not sure it would work or work very often or not kill them all
@@TorqueTestChannel since this contraption doesn't seem to care about anything but voltage, maybe consider getting some high output RC car batteries, 6ah 100c 6s batteries, 6 or 7 for density, could be fun, and they are typically cheaper than the tool brand batteries.
5A Powerstack can output up to something like 2A unless you have a Dewalt tool. There's some DRM shenanigans. There's a resistor you can put between a couple of leads that will fix that.
@@TorqueTestChannelI’m guessing you’re referring to when you used two flex batteries on the IR 1 inch. But for some reason I think the Milwaukee or dewalt will have a better result. Perhaps that backpack is best suited to the big MX FUEL Forge battery instead
For some reason, Myth Busters came to mind lol I got into an argument with a guy about this exact thing. He said that a larger battery won't make a tool perform any better just run longer. I said a larger battery will have less voltage drop therefore run at a higher voltage and be more powerful. Thank you for setting things straight. Cool channel. Just found you today!
The battery backpack is something I always thought might be a good idea depending on the circumstances. The tool itself can be smaller and lighter if it doesn't have a chunky battery attached to it.
yeah its definitely the solution for the professional landscaper. If you have to clear hundred of meters of dirt with your electric weed Wacker this is your friend
@@groomschild1617running a stihl combi with cutting heads for hours and hours on end I can say, my arms appreciated the lack of battery. Plus, not needing to charge the backpack bat all day is amazing.
I have been wanting to just make an adapter that gives like a short 4-6' cord so I can drop the pack to get into tighter places. It's still way more convenient than dragging air hoses around, extension cords, or messing with a compressor. Be great for an M12 stubby. With all the adapters out I think I'll get it done now. Actually, I have some spare M12 battery holders at work that were once used to power some scales. Perfect.
I've wanted to customize a battery adapter for a backpack or just remote battery cable extension for a while. We use some of the bigger Milwaukee cordless impact guns for assembling large line size pipe for high pressure piping in our hydrostatic test stand. The vibration of the impact gun doing it's thing rattles the stock battery connection to the point where the terminal connections fail. We use stretch wrap film and duct tape to try to keep the battery connected to the gun. The big heavy batteries coupled with the harsh vibration of the gun just does not work well over time. The lightweight adapter plugged into the gun with a cable to the backpack or remote battery seems like the solution.
From watching the first 10 minutes alone, I have to say this is the most deranged thing I've ever seen you do. Can't say I didnt enjoy every second of the madness. Great video as always, Keep up the good work TTC
I can't express enough how awesome your forays into wonky battery builds are. It's like hot rodding cars but with different potential consequences. Thanks for the time, effort and money you put into this!
Nice! The power backpack is an idea I've been considering for about 15 years now. I'm glad to see someone has been developing it. More things to think about if anyone wants to patent anything: Magnetic attachments at a wrist strap (with microfiber sweat band) to deliver power to your tools as you pick them up. Shoulder sockets for work light, filter helmet, stereo accessories, etc.
- public domain is so much more fun, nothing ventured nothing gained, having the idea is nice - letting the field run it to wherever it ends is fantastic... Mag coupling is nice (fairly easy to work into a safe tool - positive switching makes for zero hazard when unplugged, keeping the crud off the magcontacts can be a challenge in some environments) to preserve coupling surfaces..
As soon as you built this, I was going to comment about the tools giving up the little puff of magic smoke, but I decided to wait and see what happens in this test. This video did not fail my expectations. I have some of 3DPrintedAdapters adapters, that are specific for one brand of tool, and another brand of battery, and have no complaints with their performance. Unlike you, I do not have any custom pieces, and after watching this, I certainly won't be trying this for myself, I'm not THAT brave.
Haha what an awesome video! I think this concept could be taken a step further with a 3d printed case and a custom-made battery pack with a proper bms, fuses and Anderson connectors for the power leads to the tool. Higher voltage tools would also make a lot more sense for this type of applications do too current limitations and voltage drop problems with low voltages like 18v.
Totally awesome! As an electrician I just thought I’d mention a couple things. You can get ultra flexible silicone wire from McMaster, that would definitely help over standard building wire (if that’s what you’re using). (If wire flexibility is a problem in the pack it self.) More importantly to reduce the sketch factor for your splice in the pack you could order Multi-tap insulated Lugs the F4P IL2/0-5 from City Electric Supply are probably your least expensive option. They are a bit chunky though. Now I totally understand why you chose to install Hercules batteries over Forges or Powerstack since breaking either of those would be expensive quick! I doubt it would provide any higher performance than 60 21700 cells in series parallel… Although you know we are all curious to see different options. 🙂
He used vehicle jumper cables, watch the whole vid before comment! they look flexible already, he didn't use construction cables, your saying city electrics which is a UK company, if you were an electrician in the UK you would know that our colours for construction are blue for live, brown for neutral and yellow green combo for ground or earth. I'm calling you out dude, you're not an electrician.
@spacexvanityprojectslimite3315 Does he have to be an electrician in the UK to be an electrician in the States? Maybe I missed your point but curious to the reference.
@spacexvanityprojectslimite3315 So can I call you out as well for not being attentive to detail? He said "City Electric Supply" NOT "City Electrics" City Electric Supply is a U.S. based company. Nice try though...😅
@@spacexvanityprojectslimite3315 Bro what the actual F are you talking about. He literally complained about the wires in the pack itself being inflexible. LOL also TTC is not in the UK, nor am I. Would you like me to email a picture of my Canadian Red Seal Electrical ticket? I certainly hope you're not an electrician in any country, you seem to struggle with basic reading comprehension and deductive reasoning.
Tip for jacketed cable: SJT is by far the most common for 3-wire AC power cord, but is hard and stiff. The S is always first and stands for service (600v rating) except if followed by the J (Service Junior, 300v and thinner insulation), but critically the T following S or SJ stands for 'Thermoplastic' (for jacket AND conductor insulation) which are materials like PVC and similar which are harder and less flexible. If you want good power cables (like used in some AC grinders, saws, etc) you don't want SJTxxx or STxxx. I'm familiar with 3 suffixes after SJT those being in order: SxxO (oil-resistant jacket), sxxOO (oil-resistant conductor insulation in addition to jacket), SxxxxW (weather-resistant rating for outdoor, water and UV resistant). Don't know that much about individual wire except that first letting T means thermoplastic, N means nylon, S means silicone, R means thermoset (flexible polymers), X is cross-linked polymer which I think is also thermoset. Therefor, you can find/buy good replacement power cords by looking for anything starting with S or SJ without a T afterwards. Common examples being SOOW (thicker than SJ, heavy duty, oil and outdoor rated), SJOOW (thinner jacket, more flexible than Sxxx), SJO (I think you get it..). SVxxx is lighter-duty than S or SJ and commonly used for vacuum cleaners but not entirely sure if it stands for that. Not that expensive from some places online and a really good upgrade over thermoplastic cables, HD/Lowes/Menards might stock replacement cords and I think HD or Lowes also sells it by the foot.
I would love to see Dewalt introduce a flexible, high capacity backpack using pouch technology with these kinds of capacities. It would be great for the outdoor tools, especially if it could support the 60 volt stuff!
Toro has a 60v backpack for their cordless lawn equipment that’s generally meant for professionals and contractors. I’d be curious if that could be adapted to big yellow’s FlexVolt tools…. Those Toro packs are rated in Ah at the full 60v since they’re single voltage (unlike the DeWalt batteries generally rated at 20v) and go up to 10Ah. That’s 600Wh per battery! Edit to add: the Toro pack takes 2 batteries so it’s ultimately a 1200Wh pack.
- all the manufacturers lie in the advertising... lol, we just fall for it most of the time, "fool me once, my fault..." (the Nominal voltage companies are more honest in my book) Let"s see: 16S (LiMNC) is both "60V class" and "57.6V nominal" (67.2V fully charged...) ?? Who speaks truth? 14S is 50.4V Nominal 58.8V peak..... which is what... lower energy for the same cell type, probably lower power delivery too, or the same power for more thermal stress and shorter run time - quicker battery demise too. LFP changes it all as that chemistry has lower voltage per cell (3.3Nom and 3.65V peak (let's say..) 58V nomial needs 18 cells, but then the power draw is averaged across more cells, for better cell life (without getting in to the - generally - higher cycle life of LFP) No battery in my inventory has a single voltage - it has a characteristic curve from flat to full (very few "power meters" are at all accurate).
Now it's time to run it in the "project ludicrous" DeWalt impact I feel like it would benefit extremely from the extra juice with its turbo mode it has
For me it's clearly tell us that, it's all about the MOTOR despite of having enormous amount of AH that are ready to supply to the motor the motor will dictate how many amps of power it needs to run under heavy load. anyways thanks for this video very informative, ineed.
Basically. Brushless tools in general are ultimately limited by heat and somewhere in the circuitry they all must have current monitoring/limiting or it's straight-through with current the same and only higher voltage producing more power. They would need to use significantly bigger motors with some sort of cooling for the power electronics if they're ever going to approach the power of corded tools, but batteries are nowhere near good enough to supply them for more than 10-15 minutes
Dude!! I love it! This video has me grinning ear to ear and wishing I could sit in background of your video workshop and clap & cheers along with your awesomeness. Cheers
It’s like makita approves all the ideas someone comes up with. But, passes it though all the bean counters so by the end it’s a neat idea that isn’t nearly as usable as it should be.
This .... this is real youtube content right here. loved this video!!!! everything about it... editing.. the monologue the subject matter ! great job !
The nightmare here is that the backpack catches on fire and you can't get the straps off. Probably needs a thermal cutout at least, maybe with an audible warning. It's not like a tool where you can just drop it/throw it and run away. It would be interesting to know the voltage drop across the assembly from the battery terminals to the tool, and maybe also some clamp current meter measurements on the individual battery leads (or voltage drops across individual leads if they have known resistance).
A seatbelt quick release is needed for the pack and a metal 50 gallon drum half filled with sand is necessary. Throw it in and dump the rest of the sand on top. Not exactly a practical solution. Did I mention that EMS and the fire dept should be standing by?
- The sand is a good start (rare to see a well supplied half ton bag primed to go as needed) salt water for some brining action makes for more excitement.... sand plus salt water ??? Time to test... Military backpacks with quick releases are a concept well tried.
The scary pixie magic that is held in that little yellow/teal box is exciting 🎉 im working on a 60 amp hour hart project that can be used for 20v hardware tools, but with a flick/push of a button, I can power the 40v lawn tools.
The only way to make this sketchier is to make it for the 60v dewalt tools! I’d love a backpack of 15ah batteries feeding my grinder (I suck at welding)
I believe this does work with 60v DeWalts, they just chose the most bang for the buck with the Hercules. My experience with my Dewalt 15ah battery is that it's not the best option because of its 18650 cells. When I use it on my cordless table saw it immediately loses power when it drops to 2 bars. I don't have the same issue with my 12.0(20,700 cells) and 9.0(21700 cells). They will both run at full power until they're just about dead. Luckily I got my 15.0 on sale for $265, but if I could go back and do it again I would simply get another 12.0 for $180. $265÷15=$17.66 per AH, $180÷12=$15 per AH, so the better battery is actually less $ per AH. All that said, I do like having the 15AH for the table saws runtime, regardless of the reduction in power.
@@riba2233 I won't argue the science behind the potential. I'm certainly not an electrical engineer or expert in that field by any stretch. I'm just telling my personal experience with each battery in the field and with that I do not consider the 15ah to be the best option both economically and in performance.
Assuming he's using about 6 feet of 1AWG wire here and 100 amps of current he'd drop from 20v at the battery to about 19.85v at the tool. If he cut that down to 3 feet of wire it would be about 19.92. Not sure if that would make a noticeable difference. Also, 100 amps is probably worst case here so the actual voltage drop would generally be even less. I doubt most of these tools are using 2000 watts other than maybe the saw and that Milwaukee impact.
@@hngbros8346 very true, but they are comparing voltage drops down to tenths of a volt, and the cables seem much longer than they need to be. It was just a thought. 👍
Electric chainsaw only drawback is its runtime - even 15 amp only gets you like 10min of work. This pack could shine with the dewalt 20inch saw (DCCS677B)! Would be bad to see that test?
Online I've heard of a so called "active diode" module which is just an ic and a mosfet taking the place of a diode and it is commonly used for high power solar installments because it has less voltage drop across itself thus both letting more power flow and run cooler. It does however need a source of power so that it can turn on the mosfet. ( The better ones also have a bypass diode in case of 1. No power, 2. Mosfet failure, 3. Assisting the mosfet during overload
Must be a marketing buzzword... transistors and especially FETs (i.e. MOSFET) like IGBTs are so widely used for high-current circuits because they have so little resistance and are thus efficient/cool. They do need control circuitry as you noted but they've been used in everything for so long and are largely why semiconductors like diodes and transistors were so revolutionary over inefficient vacuum tube and linear power supplies without FETs. First time seeing the term 'active diode' but not surprised it's a solar buzzword that basically all power supplies use. That said it does suck when power transistors overheat and fail (like in my Panasonic Plasma TV..) and is already a problem for all the new 'inverter' AC motor stuff like air conditioners and furnaces. They can fail out of nowhere but it's especially bad if manufacturers cheap out and don't have sufficient cooling for them.
Well I am going to make one of these out of a massive 18650 pack now now. This is awesome! I will finally be able to use my table saw all day on one charge.
Imagine someone would fill the backpack with, lets say, a flamable liquid and feed the tools with it! Imagine someone would later minimize the needed equipment so every tool could have a small tank for said liquid. I love the future!
Awesome project!.big thumbs up for taking on the task. I figure you have a plethora of tools, but fwiw, for crimping I recently picked up a Temco TH0005 11-ton hydraulic crimper, best crimper that I wish I had years ago lol. 10AWG-600 MCM including half sizes...I highly recommend factory direct..awesome tool. That with a Wirefy handheld crimper, perfect duo. I haven't soldered a big wire since...but I see the safety side of your project. Just wanted to toss that out, hope I didn't mimic what you already know but can't hurt to try. Keep up the great work.
Get some "fork lift battery quick connectors" and you can easily switch adapters and have them nicely attached to the tabs. Add a nice metal shield on the bottom that wraps up over the top edge if you think it would have any lithium runaway to cover your back and head.
I think TorqueTest watches AvE channel as well (he is starting to talk the same haha). You guys need to get together and do a talking hands video together lol his hilarious commentary with your tests would be great
I suggested this kind of idea _years_ ago when tools and lithium packs were first getting to the point of being unwieldy and power hungry, even before DW started pushing flexvolt on large otherwise stationary tools. A semi-corded tool where you have a short lead to a backpack or belt clip just make more sense, you're moving both a static and dynamic weight to a part of the body that doesn't have to handle it, and the tools can also benefit from it; and it's not just about weight issues, it's also size issues and endurance issues. I'm honestly surprised that Milwaukee didn't do this when they first announced their MX platform, just considering those packs are going to be close to the weight of some tools themselves. Also are jumper cables now the cheapest? I haven't checked cable cost in awhile, but I would've thought welding cable would've still been the affordable option.
You could set it up with a initial connection through a resistor(for each battery) to balance the batteries and then a series of switches to short the resistors. That way you limit the balance current but have almost 100% power in ''run'' mode. You also could try mosfet's as soft switches (with big capacitances on gates to slowly rump up the current)
3:47 BMS , problem solved. If the cells are too far off it would balance them before being able to do anything, normally when charging but many units can during discharge too. Even if you cant find a high amo one there are still ways to make it work safe.
He was so preoccupied with whether or not he could, he didn't stop to think if he should. Absolute mad lad.
The advantage of mad science is not having to ask "what is the worst that could happen".
He should, by the way, Totally should
For sure my favorite of his creations. Brilliant.
I disagree. He Should do more.
Super awesome idea, and super cool to look at, is it practical? Nah, I wouldn't be surprised if you end up being able to get these super cheap after a year of failure to move the inventory. I need a backpack full of batteries said no contractor ever, he's going to grab his corded if he really is in a hurry and needs to get the job done. This is the complete opposite of having a "cordless" tool. If I have a choice between the backpack full of batteries or plug it into 110v, I'm going to reach for that outlet every single time. That added boost in watts, isn't worth the inconvenience of not being able to move around freely.
A simple high current diode on each battery would prevent batteries from feeding back into each other
Edit: please read the replies before adding another about how wrong I am, and that "ideal diodes" are needed instead.
Oooh that's a good idea. I like it
@@TorqueTestChannel You can get pretty massive schottky barrier diodes for massive currents. They have less losses and voltage drop than a normal PN/Silicon diode. :)
Back when lithium primary batteries came out, we ultra runners quicky found out about not mixing fresh and partially used batteries in our flashlights.
@@AnnaVannieuwenhuyse1200W at 20V, is 60A, that's a ton though a diode. Better would be some LM5050-2s and big MOSFETs/GaNFETs.
for a simple high power application look at how cheap lithium jump-packs handle preventing backfeed@@TorqueTestChannel
Tim Taylor would be proud...
Seems like Bosch has implemented the same "that's quite enough amps, thank you" system that Makita has on some of their tools.
as they should if they want to avoid milwaukee/dewalt smoke scenario :) yeah it's nice to win short tests, but in the real world usage scenario tools not smoking up is more desirable imho.
AEUGH?!
you could always just gee i dont know, design your tools for the future? considering milwaukee and that m18 high torque is "the best" for 10 years they should over engineer the mechanical aspects and match the wiring to do the same. that would help for when batteries get more powerful.
or just redesign tools as batteries improve. @@riba2233
Yes, well, one does typically want their tools to last longer than 2 weeks before all the smoke leaks out. 😂
@@riba2233 looks like the 150mm grinder has a current limit. 1150 vs 1160 watts is basically the same, but 4x12ah got noticeably more RPM under load than the Forge. Circular saws are hard to overload as the gullets of the blade fill up, which limits how fast you can remove material, which limits how much torque you can put on it. Still, no current limit is a very Milwaukee thing to do.
I love these kind of videos. The skech factor makes everything more entertaining.
How do you not have more subscribers? Everybody talks about this channel.
Can't say subscriber numbers was ever a main goal of ours, which is why we don't ever really mention subscribing during videos. As you say, the info (or fun in this case) gets around so that's the goal!
Everybody torques about this channel
"If you don't subscribe to this channel, then fnck you..." -Ricky Bobby
Subscribers used to mean something on YT, but these days it's more about watch time and engagement (comments, like/dislike)
It makes sense when you have many channels with millions of subs, but their views are less than 10% of that on most videos. Then you have some channels with maybe 10K subs, but millions of views on some videos.
TTC seems to be in the sweet spot. Their videos seem to settle around 25% of their sub numbers at their lowest, but spike higher up to 100%+ on some videos. That tells me they have retention regardless of subs. People watch because they are genuinely interested and not because of some "to-do list" curated by RUclips's subscription system.
I wouldn't be surprised if even on TTC's lower performing videos, their views from people not subscribed was still over 50%.
I mean it's a very niche channel
That Milwaukee Forge battery is seriously impressive. It took 4 Hercules 12hr batteries to de throne it on the dyno. You really do get what you pay for
Milwaukee all day, or all week.
I’m surely but slowly moving towards Milwaukee. I’m still using Milwaukee’s lil bro Ryobi. Ryobi did last me longer than I thought it would. Already slowly growing out of them.
4 hercules 12hr batteries in a teal (Makita) case panted yellow with dewalt stickers no less
Look at what they need to mimic a fraction of our power
You had me in the first half, not gonna lie. I was ready to go to amazon and buy an official DeWalt battery backpack right now. Kudos for getting me so good. Good day sir!🤣
Right? So disappointed it's not a real thing. We need Dewalt to make it happen!
I love how, in the end, he just threw some more nylon straps on it to hold the janky plastic door in place. Man, Hercules uses quality cells... that is a truly great bit of information.
I literally was about to send a link to my boss 🤣
This is a throwback to the Black & Decker ThunderVolt. I have some of the pieces to this ancient system. 24v remote battery packs(lead acid!) power multiple tools.
20 years ago I made a fanny pack battery for a Hilti SDS hammer drill to be used by guys opening climbing routes. Was small 6v gel cells for storage and built a fold out solar panel for charging. Ended up being 18v 48 ah battery that they hung over their butts. I enjoy this back pack completely.
How much did it weigh?
@@KHALABEEB like around 20 lbs. Pretty energy dense for the time. 9 × 6 v at about a pound and a half each. Did 30xs the holes the original nickel cadmium could do. Had a loop to hang the drill from on the pack and a 10 gauge cable hooked right to the trigger with a wheelchair disconnect on the pack side. All off the shelf BMS batteries. Was cheaper than a the bigger OEM replacement battery. Made the drilling easier having the battery weight on the body too.
I love the visual of the Dring Millwaukee and the power pack. It's like ghost busters meets Bane/HD diesel mechanic or HD tire and wheel tech. Show up to the repair yard with that and just blast wheel assemlies off semis all day while a bunch of teenagers run around in a panic trying to keep up doing the mounting and balancing.
dude. i was at a u-pick the other day and someone was running around with a pack like this just ripping parts off. his two buddies would just hold the part so he could rip through the bolts, then they'd throw it into one of the two wheelbarrows they had. rinse and repeat and before long i'd heard his uggas all over the place long after my battery had died.
@@blendpinexus1416 That's awesome.
It's the BFG9000!
These "Hold my beer" ideas are the best. Keep up the good work TTC.
The fact he opened the pack up and modified it had me. Man is a dedicated genius
Brings back memories of the commando belts for Ni-Cd tools years ago. I don't know if anyone remembers them, but you could build your own Ni-Cd string for you voltage tool and simply wire it in using the old battery housing as a shell. Like an Army ammo belt or shoulder sling. They worked really good compared to the orginal packs and also kept the weight accross your waste or chest. It was nice while working off of ladders or scaffolding.
I really feel like you could be my new best friend. I have shown this video to all of my family and gotten simply a wide eyed blank stare back with a single word 'no'
Thank you for putting out content like this, it helps me prove to everyone around me that I'm not just a wierdo with a shop in his garage that sometimes catches things on fire.
This episode just made me happy! I couldn't stop smiling while watching it. Watching the graphs is cool is and all, but watching the creativity of your channel and the projects you decide to do for fun is where I really find the most joy. Also, please the Fenix PD36R Pro when you test high-end flashlights. Thanks!
When I'm not actively looking for a purchase recommendation, these are my favorite types of videos.
I wonder what 4 forge batteries or power stack batteries would do
Stacked pouch cell power tool batteries don't very much enjoy being pulled from old school +/- style. Just getting a voltage drop from them on a load tester takes a lot of tries. I'm not sure it would work or work very often or not kill them all
A black hole?
@@TorqueTestChannel since this contraption doesn't seem to care about anything but voltage, maybe consider getting some high output RC car batteries, 6ah 100c 6s batteries, 6 or 7 for density, could be fun, and they are typically cheaper than the tool brand batteries.
5A Powerstack can output up to something like 2A unless you have a Dewalt tool. There's some DRM shenanigans. There's a resistor you can put between a couple of leads that will fix that.
@@TorqueTestChannelI’m guessing you’re referring to when you used two flex batteries on the IR 1 inch. But for some reason I think the Milwaukee or dewalt will have a better result. Perhaps that backpack is best suited to the big MX FUEL Forge battery instead
For some reason, Myth Busters came to mind lol
I got into an argument with a guy about this exact thing.
He said that a larger battery won't make a tool perform any better just run longer.
I said a larger battery will have less voltage drop therefore run at a higher voltage and be more powerful.
Thank you for setting things straight.
Cool channel. Just found you today!
I love this Dr. Frankenstein skunk works stuff. I’d love to have this for lawn equipment.
So you turned back 25 years of batterie evolution and made cordless tools corded again.😜I love it
Worst comment award.
@@mcspikesky Don't be so hard on yourself. At least you won something.
The battery backpack is something I always thought might be a good idea depending on the circumstances. The tool itself can be smaller and lighter if it doesn't have a chunky battery attached to it.
yeah its definitely the solution for the professional landscaper. If you have to clear hundred of meters of dirt with your electric weed Wacker this is your friend
@@groomschild1617running a stihl combi with cutting heads for hours and hours on end I can say, my arms appreciated the lack of battery. Plus, not needing to charge the backpack bat all day is amazing.
I have been wanting to just make an adapter that gives like a short 4-6' cord so I can drop the pack to get into tighter places. It's still way more convenient than dragging air hoses around, extension cords, or messing with a compressor. Be great for an M12 stubby. With all the adapters out I think I'll get it done now. Actually, I have some spare M12 battery holders at work that were once used to power some scales. Perfect.
@@ChevyConQueso exactly
I've wanted to customize a battery adapter for a backpack or just remote battery cable extension for a while. We use some of the bigger Milwaukee cordless impact guns for assembling large line size pipe for high pressure piping in our hydrostatic test stand. The vibration of the impact gun doing it's thing rattles the stock battery connection to the point where the terminal connections fail. We use stretch wrap film and duct tape to try to keep the battery connected to the gun. The big heavy batteries coupled with the harsh vibration of the gun just does not work well over time. The lightweight adapter plugged into the gun with a cable to the backpack or remote battery seems like the solution.
From watching the first 10 minutes alone, I have to say this is the most deranged thing I've ever seen you do. Can't say I didnt enjoy every second of the madness.
Great video as always, Keep up the good work TTC
10/10 would buy a backpack like this. With the proper safety features of course 😜.
Its not as cool if it isn't 100% sketchy ...!
Need to live a little 😬
fire extinguisher and running shoes
Just wear a wet t shirt from Justin Case
It's painted bright yellow. What other safety features could you want?
I can't express enough how awesome your forays into wonky battery builds are. It's like hot rodding cars but with different potential consequences. Thanks for the time, effort and money you put into this!
Nice! The power backpack is an idea I've been considering for about 15 years now. I'm glad to see someone has been developing it. More things to think about if anyone wants to patent anything: Magnetic attachments at a wrist strap (with microfiber sweat band) to deliver power to your tools as you pick them up. Shoulder sockets for work light, filter helmet, stereo accessories, etc.
- public domain is so much more fun, nothing ventured nothing gained, having the idea is nice - letting the field run it to wherever it ends is fantastic... Mag coupling is nice (fairly easy to work into a safe tool - positive switching makes for zero hazard when unplugged, keeping the crud off the magcontacts can be a challenge in some environments) to preserve coupling surfaces..
I mean, eventually you just get the power loader from Aliens. Make it nuclear powered and a fork lift and comes with an acetylene torch… 🤌👌 👽
The railroad maintenance department would like to speak with you. They appear to approve of the new 10hp standard for hand tools.
this is great. It is a big (but crazy) step towards a universal 18V battery tool interface, that i wish the US or the EU would adopt. Dont die!
It would be nice to have the same level of interpretability as with the advent of usb-c...
As soon as you built this, I was going to comment about the tools giving up the little puff of magic smoke, but I decided to wait and see what happens in this test. This video did not fail my expectations. I have some of 3DPrintedAdapters adapters, that are specific for one brand of tool, and another brand of battery, and have no complaints with their performance. Unlike you, I do not have any custom pieces, and after watching this, I certainly won't be trying this for myself, I'm not THAT brave.
Haha what an awesome video! I think this concept could be taken a step further with a 3d printed case and a custom-made battery pack with a proper bms, fuses and Anderson connectors for the power leads to the tool. Higher voltage tools would also make a lot more sense for this type of applications do too current limitations and voltage drop problems with low voltages like 18v.
Wow at the Testing with the 1 inch d handle Milwaukee with the custom backpack
The shoulder straps are not mounted backwards, it’s just to help draining all the electrons from the batteries 😂
This is the high quality content I've come to expect from TTC.
Seems like a good product for cheap/low capacity batteries to be used with outdoor/lawn equipment.
Yes ! Now you have entered the sketchy place called Red Neck engineering the party's started ! You guys have the best job ever ! Keep it up !
Totally awesome!
As an electrician I just thought I’d mention a couple things. You can get ultra flexible silicone wire from McMaster, that would definitely help over standard building wire (if that’s what you’re using). (If wire flexibility is a problem in the pack it self.) More importantly to reduce the sketch factor for your splice in the pack you could order Multi-tap insulated Lugs the F4P IL2/0-5 from City Electric Supply are probably your least expensive option. They are a bit chunky though.
Now I totally understand why you chose to install Hercules batteries over Forges or Powerstack since breaking either of those would be expensive quick! I doubt it would provide any higher performance than 60 21700 cells in series parallel… Although you know we are all curious to see different options. 🙂
He used vehicle jumper cables, watch the whole vid before comment! they look flexible already, he didn't use construction cables, your saying city electrics which is a UK company, if you were an electrician in the UK you would know that our colours for construction are blue for live, brown for neutral and yellow green combo for ground or earth. I'm calling you out dude, you're not an electrician.
@spacexvanityprojectslimite3315
Does he have to be an electrician in the UK to be an electrician in the States? Maybe I missed your point but curious to the reference.
@spacexvanityprojectslimite3315
So can I call you out as well for not being attentive to detail?
He said "City Electric Supply" NOT "City Electrics"
City Electric Supply is a U.S. based company.
Nice try though...😅
@@spacexvanityprojectslimite3315 Bro what the actual F are you talking about. He literally complained about the wires in the pack itself being inflexible. LOL also TTC is not in the UK, nor am I. Would you like me to email a picture of my Canadian Red Seal Electrical ticket? I certainly hope you're not an electrician in any country, you seem to struggle with basic reading comprehension and deductive reasoning.
Tip for jacketed cable: SJT is by far the most common for 3-wire AC power cord, but is hard and stiff. The S is always first and stands for service (600v rating) except if followed by the J (Service Junior, 300v and thinner insulation), but critically the T following S or SJ stands for 'Thermoplastic' (for jacket AND conductor insulation) which are materials like PVC and similar which are harder and less flexible. If you want good power cables (like used in some AC grinders, saws, etc) you don't want SJTxxx or STxxx. I'm familiar with 3 suffixes after SJT those being in order: SxxO (oil-resistant jacket), sxxOO (oil-resistant conductor insulation in addition to jacket), SxxxxW (weather-resistant rating for outdoor, water and UV resistant). Don't know that much about individual wire except that first letting T means thermoplastic, N means nylon, S means silicone, R means thermoset (flexible polymers), X is cross-linked polymer which I think is also thermoset.
Therefor, you can find/buy good replacement power cords by looking for anything starting with S or SJ without a T afterwards. Common examples being SOOW (thicker than SJ, heavy duty, oil and outdoor rated), SJOOW (thinner jacket, more flexible than Sxxx), SJO (I think you get it..). SVxxx is lighter-duty than S or SJ and commonly used for vacuum cleaners but not entirely sure if it stands for that. Not that expensive from some places online and a really good upgrade over thermoplastic cables, HD/Lowes/Menards might stock replacement cords and I think HD or Lowes also sells it by the foot.
I nominate you to be awarded The Nobel Prize! Anyone else? Your channel ROCKS!
I would love to see Dewalt introduce a flexible, high capacity backpack using pouch technology with these kinds of capacities. It would be great for the outdoor tools, especially if it could support the 60 volt stuff!
And a solar panel too! Just add USB A and USB C and you'll have the ultimate camping/survival battery pack too.
You have won the internet today for this vid 💯💥
I wouldn't be surprised to see a real dewalt version of that out in a couple of years.
This is some ghost bustin' levels of power on your back.
Toro has a 60v backpack for their cordless lawn equipment that’s generally meant for professionals and contractors. I’d be curious if that could be adapted to big yellow’s FlexVolt tools…. Those Toro packs are rated in Ah at the full 60v since they’re single voltage (unlike the DeWalt batteries generally rated at 20v) and go up to 10Ah. That’s 600Wh per battery!
Edit to add: the Toro pack takes 2 batteries so it’s ultimately a 1200Wh pack.
Ego runs at 56V and their backpack is 28 AH. 1568 Wh!!
Makita has 1200 and 1500wh backpacks ;)
@@Blaquer17 ... nice
- all the manufacturers lie in the advertising... lol, we just fall for it most of the time, "fool me once, my fault..." (the Nominal voltage companies are more honest in my book)
Let"s see: 16S (LiMNC) is both "60V class" and "57.6V nominal" (67.2V fully charged...)
?? Who speaks truth?
14S is 50.4V Nominal 58.8V peak..... which is what... lower energy for the same cell type, probably lower power delivery too, or the same power for more thermal stress and shorter run time - quicker battery demise too.
LFP changes it all as that chemistry has lower voltage per cell (3.3Nom and 3.65V peak (let's say..)
58V nomial needs 18 cells, but then the power draw is averaged across more cells, for better cell life (without getting in to the - generally - higher cycle life of LFP)
No battery in my inventory has a single voltage - it has a characteristic curve from flat to full (very few "power meters" are at all accurate).
DIY proton pack!!!
The ghostbusters would be proud
This needs a Ghostbusters Proton pack makeover for all the nutbustin' power.
When there's something's stuck, in your neighborhood....
Now it's time to run it in the "project ludicrous" DeWalt impact I feel like it would benefit extremely from the extra juice with its turbo mode it has
how to make your cordless tools corded:
You know it's good when it causes spontaneous LOL just watching the beast being made. OMG I love this channel.
For me it's clearly tell us that, it's all about the MOTOR despite of having enormous amount of AH that are ready to supply to the motor the motor will dictate how many amps of power it needs to run under heavy load. anyways thanks for this video very informative, ineed.
Basically. Brushless tools in general are ultimately limited by heat and somewhere in the circuitry they all must have current monitoring/limiting or it's straight-through with current the same and only higher voltage producing more power. They would need to use significantly bigger motors with some sort of cooling for the power electronics if they're ever going to approach the power of corded tools, but batteries are nowhere near good enough to supply them for more than 10-15 minutes
Dude!! I love it! This video has me grinning ear to ear and wishing I could sit in background of your video workshop and clap & cheers along with your awesomeness. Cheers
This really goes to show that Makita are actually paradoxically so ahead of the game yet behind on LXT packs
It’s like makita approves all the ideas someone comes up with. But, passes it though all the bean counters so by the end it’s a neat idea that isn’t nearly as usable as it should be.
This .... this is real youtube content right here. loved this video!!!! everything about it... editing.. the monologue the subject matter ! great job !
The nightmare here is that the backpack catches on fire and you can't get the straps off. Probably needs a thermal cutout at least, maybe with an audible warning.
It's not like a tool where you can just drop it/throw it and run away.
It would be interesting to know the voltage drop across the assembly from the battery terminals to the tool, and maybe also some clamp current meter measurements on the individual battery leads (or voltage drops across individual leads if they have known resistance).
A seatbelt quick release is needed for the pack and a metal 50 gallon drum half filled with sand is necessary. Throw it in and dump the rest of the sand on top. Not exactly a practical solution.
Did I mention that EMS and the fire dept should be standing by?
- The sand is a good start (rare to see a well supplied half ton bag primed to go as needed) salt water for some brining action makes for more excitement.... sand plus salt water ??? Time to test...
Military backpacks with quick releases are a concept well tried.
Cobra buckles would be my choice.
The scary pixie magic that is held in that little yellow/teal box is exciting 🎉
im working on a 60 amp hour hart project that can be used for 20v hardware tools, but with a flick/push of a button, I can power the 40v lawn tools.
The only way to make this sketchier is to make it for the 60v dewalt tools! I’d love a backpack of 15ah batteries feeding my grinder (I suck at welding)
I believe this does work with 60v DeWalts, they just chose the most bang for the buck with the Hercules. My experience with my Dewalt 15ah battery is that it's not the best option because of its 18650 cells. When I use it on my cordless table saw it immediately loses power when it drops to 2 bars. I don't have the same issue with my 12.0(20,700 cells) and 9.0(21700 cells). They will both run at full power until they're just about dead. Luckily I got my 15.0 on sale for $265, but if I could go back and do it again I would simply get another 12.0 for $180. $265÷15=$17.66 per AH, $180÷12=$15 per AH, so the better battery is actually less $ per AH. All that said, I do like having the 15AH for the table saws runtime, regardless of the reduction in power.
@@Tool_Addicted_Carpenter15ah actually has more power potential than even 9ah fv. Yes, it uses 18650s but powerful ones and a lot of them (30)
@@riba2233 I won't argue the science behind the potential. I'm certainly not an electrical engineer or expert in that field by any stretch. I'm just telling my personal experience with each battery in the field and with that I do not consider the 15ah to be the best option both economically and in performance.
@@Tool_Addicted_Carpenter yeah, not arguing about that :)
@@riba2233 higher voltage is generally better as the voltage drop is less due to lower amps
This is one of my favorite RUclips channels.
Nicely done! You could probably shorten those cables a bunch and reduce voltage drop even more!
Assuming he's using about 6 feet of 1AWG wire here and 100 amps of current he'd drop from 20v at the battery to about 19.85v at the tool. If he cut that down to 3 feet of wire it would be about 19.92. Not sure if that would make a noticeable difference. Also, 100 amps is probably worst case here so the actual voltage drop would generally be even less. I doubt most of these tools are using 2000 watts other than maybe the saw and that Milwaukee impact.
@@hngbros8346 very true, but they are comparing voltage drops down to tenths of a volt, and the cables seem much longer than they need to be. It was just a thought. 👍
Wow, first time watching one of these in a while and you've stepped up the tech by a couple orders of magnitude.
Really impressive.
Electric chainsaw only drawback is its runtime - even 15 amp only gets you like 10min of work. This pack could shine with the dewalt 20inch saw (DCCS677B)! Would be bad to see that test?
I'm imagining a power back with 8 of those 15Ah DeWalt bricks...
God damn I wonder what would runtime be @@kornaros96
Awesome!! I chuckled a lot watching this, thanks for cheering up the Monday evening here in rainy Stuttgart! :-)
Cant wait to see what kind of tool destruction this may cause. We haven't seen the limit yet for a lot of these tools.
So, TTC does analitical scientific tool reviews? Yeah, all of them are scientific, but some are more mad scientist.
This is the best channel on YT.
I am seeing a hoped up electric scooter in my future. Your giving me bad ideas
My stihl lithium yard equipment have a 32ah 36v backpack battery. Doesn't give more power, but run all day fun.
Time to amp clamp it and see the current draw.
you had both volts and power on the screen. just divide them
the "big power no boom" typed into the aliexpress search made me laugh so much.
April 1st already?😂
Online I've heard of a so called "active diode" module which is just an ic and a mosfet taking the place of a diode and it is commonly used for high power solar installments because it has less voltage drop across itself thus both letting more power flow and run cooler.
It does however need a source of power so that it can turn on the mosfet. (
The better ones also have a bypass diode in case of
1. No power,
2. Mosfet failure,
3. Assisting the mosfet during overload
Must be a marketing buzzword... transistors and especially FETs (i.e. MOSFET) like IGBTs are so widely used for high-current circuits because they have so little resistance and are thus efficient/cool. They do need control circuitry as you noted but they've been used in everything for so long and are largely why semiconductors like diodes and transistors were so revolutionary over inefficient vacuum tube and linear power supplies without FETs. First time seeing the term 'active diode' but not surprised it's a solar buzzword that basically all power supplies use.
That said it does suck when power transistors overheat and fail (like in my Panasonic Plasma TV..) and is already a problem for all the new 'inverter' AC motor stuff like air conditioners and furnaces. They can fail out of nowhere but it's especially bad if manufacturers cheap out and don't have sufficient cooling for them.
Christmas came early this year, with this video!
Also, nice that the wife's car has a new set of short jumper cables!
Well I am going to make one of these out of a massive 18650 pack now now. This is awesome! I will finally be able to use my table saw all day on one charge.
This was a great video! I had all the fun without the cost. Keep 'em coming "Battery Busters"!
That Milwaukee 1 inch impact has been an absolute want of mine for a VERY long time
The batteries in parallel reduce the internal resistance of the batteries taken individually. 1/Rtot= 1/R1+1/R2+1/R3+1/R4
The leaf blower application is really legit.
It could replace gas for commercial use.
You know that stuff already exists right?
That's exactly what Makita is doing with there ConnectX line
Great episode, the commentary was tasteful, humerus and well placed. Cheers!
Imagine someone would fill the backpack with, lets say, a flamable liquid and feed the tools with it! Imagine someone would later minimize the needed equipment so every tool could have a small tank for said liquid. I love the future!
ahhh yes this is what i was asking about and you gentlemen said you had something up your sleeve lol
The looks I get at work while watching this with Tim the tool man Taylor grunts is priceless. 😂
You guys are always coming up with crafty ideas. "If the women don't find you handsome, they should at least find you handy." Red Green.
Been waiting for dewalt to come out with backpack power for lawn equipment come on DEWALT
Makita has a 40v 1500wh backpack battery. Builds and Stuff did a video on the 1200wh not to long ago. We need to see that tested on this channel.
I love the whole commentary, fun to watch. Thanks.
This is among the greatest RUclips videos ever
I haven't even watched the video yet and all I can say is that.... You are a mad lad lol.
Awesome project!.big thumbs up for taking on the task.
I figure you have a plethora of tools, but fwiw, for crimping I recently picked up a Temco TH0005 11-ton hydraulic crimper, best crimper that I wish I had years ago lol. 10AWG-600 MCM including half sizes...I highly recommend factory direct..awesome tool. That with a Wirefy handheld crimper, perfect duo.
I haven't soldered a big wire since...but I see the safety side of your project.
Just wanted to toss that out, hope I didn't mimic what you already know but can't hurt to try.
Keep up the great work.
I can’t help but think ghostbusters when I see this in action. I’m here for it.
Get some "fork lift battery quick connectors" and you can easily switch adapters and have them nicely attached to the tabs.
Add a nice metal shield on the bottom that wraps up over the top edge if you think it would have any lithium runaway to cover your back and head.
This channel and its videos are SO damn satisfying to my (admittedly) male-centric brain..
Welcome to the new HERCULES QUADCULES PACK!!!!!!!!!!! .... this needs to be an actual thing....
This put a smile on my face. Keep on going! But please be safe too!
This is something my pops would make for sure. Well played.
Wow them 12ah Hercules packs for 78 bucks a peice that is a steal compared to the Milwaukee 12ah price and even the 15ah Dewalt Price as well
1:20 "This looks stupid enough to not throttle our juice" is such a relatable sentence. Seriously, why is being an irresponsible moron so much fun?
This is my kinda stuff right here. Love to see the yolo engineering! Definitely something I would come up with given the money, time, opportunity!
I think TorqueTest watches AvE channel as well (he is starting to talk the same haha). You guys need to get together and do a talking hands video together lol his hilarious commentary with your tests would be great
I suggested this kind of idea _years_ ago when tools and lithium packs were first getting to the point of being unwieldy and power hungry, even before DW started pushing flexvolt on large otherwise stationary tools. A semi-corded tool where you have a short lead to a backpack or belt clip just make more sense, you're moving both a static and dynamic weight to a part of the body that doesn't have to handle it, and the tools can also benefit from it; and it's not just about weight issues, it's also size issues and endurance issues. I'm honestly surprised that Milwaukee didn't do this when they first announced their MX platform, just considering those packs are going to be close to the weight of some tools themselves.
Also are jumper cables now the cheapest? I haven't checked cable cost in awhile, but I would've thought welding cable would've still been the affordable option.
Many companies already do this, Makita, ego, stihl, etc
You could set it up with a initial connection through a resistor(for each battery) to balance the batteries and then a series of switches to short the resistors. That way you limit the balance current but have almost 100% power in ''run'' mode. You also could try mosfet's as soft switches (with big capacitances on gates to slowly rump up the current)
Love it!!!! More power to the warp engines Captain!!!
Awesome. I've been asking for one of these from Ridgid for awhile now, hopefully your video inspires them.
Id love to see you test Makitas ConnectX system, theyve released a 1200w power pack and now they have a 1500w on the way
3:47 BMS , problem solved. If the cells are too far off it would balance them before being able to do anything, normally when charging but many units can during discharge too.
Even if you cant find a high amo one there are still ways to make it work safe.
Man, I was so excited when I first saw the picture. I thought DeWalt came out with this.