This is NOT a Normal Tool Battery: DeWalt Powerstack Dyno Tested 

At least with this cold testing I now know to keep my battery indoors when working on a project to have the best performance.

Drive a nail through it, i want to see if it has Amionx safecore technology in it. Dewalt signed a deal with them way back. It is supposed to prevent batteries from cooking off.

Tool companies, just like car companies, need to release "new, latest, greatest" stuff on a regular basis. I expect this battery to turn into a line up of batteries over time. For now the serious size and weight savings are pretty cool. In the future a 6AH the size of a 4 will be pretty cool too.

Love, LOVE your channel and the way you plan and execute your tests. Keep up the amazing work to keep all of us educated! have a great Christmas.

It seems it holds it own against their other lineup but definitely would be more interested if its amp hour rating was even 50% higher.

This channel has saved me so much effort in researching the best tools for my job. I considered going with air power but I bought a dcf899 and now have a 921 on order purely due to the numbers this channel is able to produce ignoring manufacturer claims. You’ve got a fan. Can’t wait for the new high torque version

Interesting story. Basically I was 10-11 years old, my dad has never taken good care of batteries until I was old enough to understand that ya kinda need to bring the damn things in during the winter. Anyway it’s spring and we needed get something I dropped underneath it so I get my dads black and decker drill and batteries we have had for like 2 yrs at that point (both left out in the cold) and we get 2 mins of run time. We barely took a board off and went through 1 battery. It may have been also due to the fact it was a black&decker but still It was surprising the damage that was done to those batteries over two years of being in the cold for like 3-5 months. After this he still did proceed to do this until I was 16 when I got more into the stuff and told him.

Another great test! Looking forward to more and better in 2022! 👍Your channel rocks! Happy Holidays!

I’m so glad I found the coolest channel on RU-vid. More information in one video than two years of college. (lol) Keep doing an awesome job. Thanks!

Great tests. I was looking for this exact test and here it is. Great work team TTC

Hey, listen...THANK YOU for this! You are right. There was a lot of hype about the power stack release. But the one thing I could not find out, from anyone, was "WHAT" the only powerstack offering was. Was it an "8," a "6," a "5," or...what? It is a 1.7. Now I know. You are the FIRST source I have found that could/would give me that answer. Thank you!

Wow. Amazing video! Thoroughly tests. Thank you for that!

I'm sure glad you spend the money I can't to test these batteries... So I'll be waiting until next Christmas for the 4.8 amp hour power stack🤞. Have a merry Christmas and may your stocking be full of beans🎅.

THANK YOU! I always, ALWAYS wait until I have seen you guys drop a vid before I purchase ANYTHING!! Now that we have that out of thd way, THANK YOU for telling us it is a 1.7aH!!! I haven't found that info ANYWHERE!

I’m here 2 yrs later and I just purchased the 5 AH version of the power stack. Knowing the original power stack is only 1.7 AH and it’s being run against 4.0 AH / 5.0 AH and it’s holding its own. I can only imagine that the new 5.0 AH power stack will be on par with the 9.0 AH flexvolt batteries.

Instead of watching "It's a Wonderful Life" this yule season, we are watching the Torque Test Channel. Jimmy Stewart would be proud of your work. ☺

This channel and a couple others are the only ones I trust, superlative work as always, I still haven’t found these batteries at any local store yet.

Very interesting. So in car audio the lithium batteries I'm running like to be warm, not hot not cold just warm. Around 100 deg give or take and they're happy to go to work. I bleed red but very impressed and happy with dewalt innovations. Even more so your test of them. Keep up the good work guys

Cold temp testing is actually very relevant to a lot of folks. I know a lot of ice fishermen are using drills instead of augers now, for example. Good to know what to expect!

Can’t wait to see this test redone once the 5aH powerstack is released 👍👍

I love my DeWalt power tools, I'm still not sold on this power stack. I think having the 2ah and some 5ah batteries will work for me.

Loving the tremendous temperature alliterations

Very interesting... I was wondering when power tools would implement a pouch battery. But, like you said, I want more capacity. The slim pack is great for a small light tool though. At least it dosen't sacrifice performance to get you that... But you pay for it.

Smashed that thumbs up for the excellent alliteration in this video.

Hello again Torque Test channel Thank you for another Great Video. Thank you for the research the capabilities of the Power Stack battery. I am looking forward to seeing more. Again thank you and Merry Christmas to you and your family.

I've been watching this channel almost since it started, and only just now figured out the 3 air wrench buzzes are for the subscribe button not part of the dyno..

PowerSack was my nickname at school

The size is awesome, capacity is fine for me. Waiting for a 1ah battery for Makita 40vMax, pretty sure the performance of the impact wrenches will be near identical to the bigger batteries when fresh off the charger. They could do for example an 1.05 ah using 10pcs 14650 Panasonic cells, but instead they chose to introduce a superheavy 8ah battery - thats 18v-16ah equivalent - to compliment the already big ones to hey had. I mean, the 5ah is the 18v 10ah equivalent and lasts even longer for real world work. Dewalt has the right ideas here, small batteries for small tools.

I wonder if having the out-the-gate beans being higher would equate to more working efficiency overall - most bolts are going to be off in less time, meaning less capacity used up with each bolt.

I've been waiting for this video to arrive. I like the idea a lot, but I doubt I'll buy any until/unless they put out higher capacity versions

Great test on the power stack. Thanks for sharing. I think this may end up being the future of packs instead of the 21700's? Will have to do better with run time though...

Great content, keep it up. This is what I like to see.

I have plenty of batteries but I want one of these for my 887 impact driver for general purpose work. I just don't want to pay for it haha. I have the 60v circular saw and let me tell you that is the way to go for a circular saw. It's the one that convinced me to start keeping my corded saw stored in my garage and trust battery operated in my truck completely. I did also get the Flex volt hammer drill kit so I also have a spare 60v battery so it's fine having a backup. Good blades are a must with battery saws though, while I can use my old corded DW364 with several teeth missing from the blade, it doesn't care it just plows right on through, so I do sometimes miss that kind of power though.

Great test! My main concern with this battery is cooling, the cells seem tightly packed. That might be the reason for the 1.7 amp hr configuration. It does look good on the impact:)

Probably best reserved for tools with a shorter operation time and moderate current draws. The close packing of the cells will punish the inner cells with heat buildup leading to uneven individual cell performance across the entire pack

Come for the torque tests; stay for the alliteration.

hell yeah I knew yall would come thru on the powerstack

I think that little power stack battery is a perfect match for the little DCF921 1/2" power house. But if you have a high torque impact gun, why not spend the same money for a heavier battery that will balance the tool in your hand and run longer? Thanks for doing this testing! Glad to see DeWalt innovating.

For high torque applications 6S x LiFePO4 would make more sense - similar voltage, much higher discharge rate, possible high charge up to ~80% (e.g. 15-18mins for 80%). It will have lower capacity but lasts way longer, degrades much slower... and no cobalt needed. They will be partly supported by existing charges but not fully...

I agree. Definitely not going to spend money on these for the little benefit. Waiting to see higher Ah to see the real comparisons. Thank you for showing us the numbers

This is why when we fly drones in the cold winter months we pocket our lipo's in our coat jackets to keep it warm so it doesn't preform like crap when it's cold. The higher the C rating on a lipo the higher the discharge rate will be. meaning more power.

this is a great channel i love the content guys !!

I really like the flat/pouch-cell batteries. The goal was to downsize the battery and keep the power or improve it. I believe they succeeded.

This might be good for the palm sanders. The small 1.5 or 2.0 ones are all I use with that so it's not so heavy.

Thank you for another amazing video, just curious if you guys would consider testing the cross brand adapters that are out there? The ones that allow you to put a battery from one brand on the body of another? Thanks guys keep up the good work

I saw the 2-pack of 1.7’s on Woot today for I think $116. Glad I watched this video before pulling the trigger on getting these. I’m looking for runtime for my DeWalt weed trimmer and leaf blower, not so much looking for more power for my drill / impact. I think that price is way down from a year ago, which suggests that maybe people have begun to see through the hype of these batteries. I’m hoping to take advantage of early-adopters and Greater Fools who bought the Powerstacks and are selling off their relatively new-ish 5 Ah XR batteries cheaply.

Great work, thank you for being so thorough

British release in March is with the 2.0 power stack 👌 what the dcf850 was originally built around.... for me it can't come soon enough I have it on pre order with the 2 2ah batteries and the new ps charger for £299

Happy to see you started with cold testing before hot testing. ☀🌡❄ Batteries, for the most part, do not like extreme temperature changes. I live in Arizona, and the majority of vehicle batteries I replace are when the temperature dips down. Granted, vehicle batteries are not the same as power tool batteries, but your testing proves the same point. Batteries on their way out could start a vehicle in the heat of summer, but would fail to start in colder conditions. Working performance will be affected by temperature. Thanks for your time (and money) spent on getting real results!

Seems like a perfect fit for Atomic tools for everyday type uses, then switch over to a 5.0 or similar if you have the rate project that's actually going to need the runtime. And now you can go from tiny flexstack all the way to the 15Ah Flexvolt monster in the same tool family. If only SBD didn't charge such crazy prices for ALL of their batteries (highest $/Wh of any of the major brands IIRC) I might be tempted to switch over.

If possible, it would be very intriguing in seeing the performance differences for the rigid high torque and mid torque when paired with the 6.0 ah and 9.0 ah octane batteries

I want to see the power stack versus the small DeWalt batteries (2ah or 3ah). That is this battery's true competition. Similar size and runtime. Bump up to the 4ah or 5ah if runtime is important.

Would absolutely love to see this powerstack and the 15ah with adapter to the ridgid octane high torque former king, then on the current king dcf900

And thanks as always for a great video.

Will the power stack technology be scaled up to replace the larger capacity batteries for the lawnmowers and yard equipment?

I'm just here to say that I appreciate the alliteration.

I remember when I first started watching your channel. I saw you holding up some kind of cordless impact up and it made the pneumatic impact sound and I rewinded it like 10 time trying to understand how the hell that cordless impact made that sound🤣🤣🤣

Yeah if a 4 amp hour energy stack can work like a 6 amp hour or 8 Amp Hour XR I will be thrilled because I'm running a combination of atomic and detect for my tools

Recommend Welzh Werkzeug Air Impact Wrench Gun 1/2 Drive Mini Beast 1350NM 1.2KG Stubby upgraded my snap on mg725 and it blows it out of the water on Amazon for £150 and couldn’t be more impressed

Me, watching this with the 5ah PS video cued up in the next tab: Oh don't you worry TTC dude, you'll get your 220USD battery and you'll get to test it inside of a year.

Give a battery the size of the 5 amp so we can use it for the rotary and orbital polishers. Right now I use the 8 amps to have enough time between switching batteries

Battery resistance (internal losses) goes up cold temperatures - the electrolite in the cells starts to freez basically - so the performance drop is expected. In the warm however the resistance only drop a little since the resistance is dominated by the conductor resistance in this case. However the battery will degrade much faster when it is hot. Much like your cell phone battery will die in a year if is is always running hot.

Thank you for your (as always) great analysis and testing. I'm really sick of 90% of the tool based youtube channels reading off DeWalts marketing talking points and creaming their pants over this battery without doing any real testing or showing any skepticism. Its an interesting technology... but really expensive for the capacity. I think its overhyped.

1. I was told not to store my Dewalt batteries in my truck during the winter and high heat summer day for it would ruin the battery pack. Is this true or will it just affect the battery performance? 2. Does the new power stack batteries react the same as the XR batteries?

The lifetime of these packs is going to be interesting to see. Those flat packs crammed in there like that could generate quite a bit of heat and reduce the life of the cells over time. Especially with a low ah pack that needs to be charged/discharged more often.

Good stuff yall

They are on Amazon for $66 with a charger right now for prime day

You’re doing the working classes Due diligence my friend !!

Not a tool expert, just here researching my first cordless impact. But I am an expert in RC Airplanes. This exact storyline evolved 15 years ago, and I can tell you what happened and happens next: Nickel batteries and brushed motors Then Nickel with Brushless motors Then lithium comes in. Then stacking more and more pouches together and folks flying 100mph+ on electric And then tiny micro brushless lithium ...it all happened in like 3-4 yrs. **When 'POUCH style lithium comes on the scene, NOBODY LOOKS BACK** Everything gets either more powerful, and or smaller, and nobody uses or thinks about cylinder cells ever again.* It's actually kind of weird why power tools are so far behind, all this stuff has been available and mass produced for hobbyists for well over a decade. Anyways, maybe handheld tools aren't as weight sensitive, but maybe they are. Pouch is the future. I have an Atomic/Powerstack kit on order, and depending on need and price, I may never buy a cylinder cell based battery 🔋 Dewalt has 20v ratchet to share this battery with my dcf923, and it's the first platform to offer 'pouch' cells...these were the final deciding factors over Milwaukee or Hercules. Expect more power from smaller sizes. Expect powerstack batteries to get more aH and cheaper price, AND more compact. Expect all other brands to follow the pouch cells, and expect cylinder cells to all but disappear...you'll always be able to rebuild old cylinder cells. Finally, aftermarket will supply the electronics, you'll be able to purchase your own pouch cells and plug-n-play components...it is possible to build / repair your own pouch cell packs.

Can you test the NoCry 20v 1/2 impact on Amazon? It's advertised at 400 Newton meters and the only reason I would suggest it is the NoCry electric screwdriver tested really favorably in project farms testing having more torque than Dewalt. They only currently cost $120 and come with 1 of the 4.0 ah packs.

I care a lot more about run time than beans especially with my 3/8, and If I need the beans which I rarely do with what I work on, I bust out the mg725 or my mid torque for lug nuts

Have u done a video on brushed impacts with different sized batteries and maybe put them against brushless too

Thank you 👍

Nice video!

I'm still rocking the Makita xdt11 4 pole impact driver. Feels better made then newer stuff.

I assume they will come out with bigger ones soon even when they first dropped the 60v system they only released the 6ah for a while

It is the same battery chemistry, but they made it flat with custom dimensions instead of round with standardized dimensions. Why would we expect anything else? (Safety reasons prevent them from choosing a more volatile/ higher output battery chemistry.)

My concern is the lithium pouches have no structural casing or gas vent like the 18650's and 21700's; which means some will inevitably turn into spicy pillows. All Lithium batteries need to vent gases, especially with temp changes.

My m12 6.0s and boss's lxt 5.0s generally last all day in our impacts/drills. The added weight of a standard pack is a better trade off over having to have 3 batteries for the day with the added cost too.

Awesome stuff as usual....except that blue font🤣

let s see what it s got inside. would you like to open it? i am curious about the producer and the technology

Hay u should definitely look into the Bosch freak gdx18v-1860cn

great items at a great price

Will the charger for the 20XR work with the powerstack batteries

Did they figure out a way to minimize the chance for the pouches to catch fire?

I wonder using these on adaptors for other tools would smoke the tools fast, you should try that on the ryobi impact, then if it breaks just warranty it

Think heat would become a problem in 4Ah/2p configuration

From my experience with LiPo and ion batteries in RC cars, planes and boats if you repeatedly heat cycle that power stack battery often you're gonna puff the cells in it. I see issues with lithium fires in the future, I've seen packs stored and charged wrong burn down garages

Cold test metabo hpt multivolt batteries 4ah specifically. I had two die on me in the cold.

not sure they can scale this up due to the heating issues they are going to face with a sandwich battery. dont think I am going to buy one though. I just dont have a use case for it. pretty much all the batteries I have been using lately are the waitley 6 amp.

Now I want to see how the cordless tools would do running directly off the wall via adapter.

Hi! please can you test impact pen driver? like hikoki wh7dl, makita TD022D Panasonic EZ7521 DCPL-7215 i am realy ecided to see this.

You should try Jet air tools. Never tried them and haven't heard much about them.

My curiosity is peaked if this power stack tech allows for more charging cycles then the traditional lithium tech. I think I've heard it's supposed to have more charging cycles. If that's true by a significant margin, then this is looking to be some great tech imo for guys like me that use an impact driver every day all day to build outdoor wood structures with lags and screws. I am a Dewalt platform guy and currently use 4ah batteries as it's a good balance of power, run time, and all day weildability compared to the lighter 2ah batteries which get sapped pretty quick if you have higher torque applications like lag driving.

I've noticed a severe drop off in speed for my high speed m12 ratchet if it gets below 35-40 degrees Fahrenheit

Do you think keeping a powerstack in 32° or less for a week will permanently degrade the battery?

how do these compare to the Flex stack batteries?

Another question if you have time to answer. Have you ever done any testing with the dcb201 1.5ah packs? I have two of those already with my Dewalt drill. Would those even run one of the newer atomic impacts? Might be a good test, I think I have been through almost all of your videos now and haven't seen the tiny packs tested yet. Obviously the runtime would be terrible but curious how terrible the working torque takes a hit.

Something about using the moniker “freedom” for Fahrenheit really broke kayfabe for me.