🔥 DeWalt POWERSTACK vs 15AH FLEXVOLT ⚡ DCF840 vs DCF850

The new DeWalt Powerstack and 15aH Flexvolt battery battle it out on the DCF840 and DCF850 Atomic impact drivers! We also throw the 21700 cell 4aH slim battery pack in the mix to take on the 18650 cells in the Flexvolt and lithium pouch cells in the Powerstack.

@ToolShow
@TorqueTestChannel
@MasteringMayhem

15aH Flexvolt Battery:

Powerstack 2-Pack:

Powerstack Single Battery:

DCF850 Bare Tool:

These are affiliate links. I may earn a small commission if you purchase products throught he above links.

Please LIKE, SUBSCRIBE, and RING THE BELL!

****
Please support the channel by using the following affiliate links!
****
INSTAGRAM: @PhillyFixed
TIKTOK: @PhillyFixed

**Equipment Used in this Video**

Legal Stuff:
Please assume all product links are affiliate links. I may receive a small commission. If you'd like to support this channel, please use links in the video description to add items to your cart if you plan to purchase them. It won't cost you anything extra and I'll get a fraction of a penny or something!

Philly Fixed is produced by JIM DAVIS PRODUCTIONS LLC. Jim is not a professional contractor. This content shall not be construed as an instructional video and is for entertainment purposes only. Do not operate power tools without proper training, personal protective equipment, and all of the equipment manufacturer's safety measures in place. By watching this video, you agree to fully indemnify and hold harmless Jim Davis Productions from any and all claims, lawsuits, demands, causes of action, liability, loss, damage and/or injury of any kind whatsoever arising out of, in any way whatsoever, any acts, omissions, negligence, or willful misconduct on the part of Jim Davis Productions LLC, its employees, contractors or associates.

[ToolShow]

THAT'S where my Powerstack went! If you DARE put that thing on a D-handle and sully it with terrible ergonomics, we're gonna have a problem bud.

[Lee-lbqh]

The 15 ah flexvolt is the only battery I use on my atomic tools when I'm working overhead or in tight spots. Love the huge size and weight

[MasteringMayhem]

Well, it’s settled. I’ll be carrying that 15Ah in my back pocket every where I go. Thanks for the shoutout and the comparison. 🙂✌️❤️

[TorqueTestChannel]

The powerstack is clearly at a disadvantage because its battery indicator lights are brighter and stay on longer, and I mean on a 1.7ah battery that's somethin :p

[dmacl]

Probably the best comparison I have seen. The 3.0 and 4.0 batteries will continue to be my go to batteries for the smaller tools.

[ThriftyToolShed]

Excellent video Jim. The tiny stack cells are very interesting. Thanks for sharing!

[redknight]

Interesting results, thanks for the video!

[roopowered]

Jim, watchin all the tool reviews you do from the past to now!! Well done 👏. Looking great! --Glad I found you ❤️

[LLAMA-LLAMA]

Loved the intro. Great showdown! Thank you.

[J.Wick.]

The 840 with the PowerStack is so so well balanced. Feels like a 12V tool in the hand 👌 But it gets downnn!

[rolotexas]

Great job man, I like the split screen and the timer recap on the bottom of the screen. I don't have to try and remember. Anyway, so far it appears to me that Powerstack is just a hype. Well see what further testing reveals I guess!

[TinkerWithTools]

Excellent work as always. Loved the intro... and that thing looks ridiculous with the 15ah on there.

[LilasTools]

I want one of those DCF840's! Fantastic Intro and Excellent Video as always Jim!

[gauldenj]

I totally laughed when I saw that 15 amp battery slapped on an impact driver. Awesome video

[evilqtip]

Nice show and test very Interesting to see..
Awesome Video man good job..

[josephmerz]

revisiting this video .to me what you tested was very relavant . after a year of both 840 and 850 hands down the 840 for me . i just grab it more often . recently learned that the slim 840 is excellent for countersink bits, expecially at a tight angle and other small drilling jobs that i want done fast . just got a 5ah powerstack -now that battery impresses these tools .

[shariganbr]

Congratulations on the explanatory video! I see the size of this flexvolt battery, I think it would be much better if it had a strap to accommodate it. And for the connection with the tool, an electrical cable with the adapter attached to the tool would be used to greatly minimize fatigue.

[mr.eastcoastgrow]

I have every battery dewalt mKes and just got a few powerstacks to help lighten some tools. I wasent expecting mutch but I saw a increase in power across all tools. Perfect for the cordless framing nailer. I can do as deep a miter as I want with it while other batteries except the 5AH cNt make it.

[geoffstrickler]

For power/weight ratio, the pouch batteries have an advantage. But for a “compact” battery with a balance of power and runtime, you can’t beat a 1P 21700 pack.

[georgedavall]

Hey yo like whadda you doin’ Jim! Long time, no see! I’ve been recovering from bad case of Covid, but no matter. Great comparison and like the mention and banter between you and ‘Belts and Boxes’ and Marius. Hope you and yours have a very Merry Christmas, as well as all you fellow YouTubers! God Bless! 👍👍👍✌🏻🙏😀🇺🇸🎄⭐️🔨