Review & teardown: Kobalt XTR 24V 4Ah 2nd gen battery
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- Опубліковано 16 сер 2024
- Full review and teardown of the 2020 model Kobalt XTR 4Ah battery pack. Kobalt has upgraded from 18650 to 21700 Li-ion cells. Is it any better? Let's find out. Here's the link to the Bosch battery teardown: • Teardown: Bosch 18V Co...
That was one of the best battery comparisons I have seen. Time to hot glue my old battery tray's. Thank you for putting this together.
This is hands down the best review for a power tool battery I’ve seen, instant subscription from me! Big thumbs up for using a clamp meter and watt meter.
You did a nice job on the comparison. Almost a year later 3/7/21 and I have yet to see a 2nd gen battery at lowe's around here.
You should do comparisons of everything. Great job and great video!
Really enjoy your objective test!! Thank u!!
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@Maddox Douglas instablaster ;)
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Wow 250 charge cycles and you've now got a battery only putting out 60% of ehat it did new. I didn't realize these power tool batteries degraded that fast. Did they list the degradation rate for the first gen? And I wonder hoe it compares to something like a Dewalt XR battery. Considering batteries are often times more expensive than the tools they power, this could be a very important factor in choosing a power tool line. Good to see Kobalt at least went with a reputable brand name for their cells. Thanks for the review.
Now iv watched....great as usual...you def put alot of effort into breakdowns....and junior eco even got a drive out of lockdown🚗
We had a drive out of secrecy. If the police see us, that's $1000/each!
Love your vids everything you put out is exactly the things I’m curious about as well!
Kobalt choose Function over Form. Great observation!
Great video as usual. love the channel. you do some very cool projects sir!
I wonder why people use the comment forum to talk about Instagram accounts? I have noticed a lot of that kind of stuff going on lately in comment sections of UA-cam. The 24 volt Kobalt system is a good one. I have the older big 1/2 inch and it is very strong. Love the channel for its content and the nice gentleman that runs it
Hi Bill, those are spams just like the ones you receive in your email. They are everywhere. UA-cam actually blocks those messages but a lot of times they fall through.
great comparision
Excellent testing!
I want the new 24v 4.0 battery. With just 6 of the newer 21700 cells. The tool guy at Lowes has no idea what I am talking about with the new 2nd battery. The pic on the Lowes site is of the older battery with 12 cells, its black and blue. The new one is all black. I can order this battery, but not sure if it will be the new gen battery that shows up.
WRT amperage rating: They aren't saying that the cells will push more current at higher temperature -- though they would, for as long as they live -- but that it's allowable _only_ at lower temperatures! That is, 35A max for packs with no thermal protection, or 45A for packs that cut off at 80°C. You obviously wouldn't want to design a pack that will run at that level continuously, but for ebikes as an example, it may well be desirable for short bursts that wouldn't actually push the pack to anywhere near 80°C. My 36V battery (4x Ryobi 9Ah packs) doesn't get nearly that high, but...definitely warm to the touch after my usual 25 km jaunt!
Warmer cells perform better. Tesla heats up their battery pack before a "launch" for more performance. But pushing it at 80C is gonna just kill it, and quick.
@@vuaeco Agreed on both counts, but as I said, the 80C cutoff would be designed into a pack that isn't normally expected to operate at that temperature, thus allowing 45A for short bursts. I presume the Tesla arrangement also has such provisions, to extend battery life/reduce warranty claims.
Cycle life is T E R R I B L E! Normal spec sheets usually list the # of cycles to either 90% or 80% capacity, and they all use the same criteria (charge to 4.2V and discharge to 2.5V @ 25°C), so...yeah. Ouf.
Well, maybe they finally admit and tell you the truth! :D
With reduced battery count there is less to go wrong, so better reliability. When/if they release an 8 Ah the newer cells will have a bigger lead. I looked up the individual cell weight for the 18650 - 45g vs 21700 - 69g so multiply that by by the cell count 8Ah 18650 = 20x45 = 900g (plus any additional hardware to link this many cells plus additional hardware for load balancing) vs 21700 10x69 = 690g (with less links and complexity so should also equate into better reliability, plus packaging will be considerably smaller)
Your better off with having more cells. The bms have a 30amp limit that is why your load test is only at 30 amp for both battery. The double cell should be able to pull 40 amp max.
Excellent comparison!
This is one of the best i watch
very detail
i like to share where i came across that 30T can handle higher discharge rate up to 45A where 40T struggle to handle 30A
which was mentioned with test from a guy who compared them in Milwaukee batteries torque test
i thought bosch core used 21700 cells ?
I'm trying to build a dummy battery to run a tool off a power supply, not unlike the dummy battery in this video. What is the blue wire in your dummy battery connected to? What is the middle terminal used for? Thanks for any info.
Really love your videos sir. Very informative, much appreciated!
Good call/reminder on the current of a 2P pack!
My Ryobi Franken-pack is 6P10S Samsung 30Q cells, for a total nominal continuous current of 90 amps...but it still gets noticeably warm with a fat guy speeding on a "1000W" ebike!
@@fun_ghoul Hm, maybe you got some dead cells? My 5P10S Sanyo 100A pack never gets even warm no matter how I push it.
@@vuaeco Nah. It's done that since they were brand new, and there's under 20 cycles on it. My "curb weight" (me, bike, motor, battery and cargo) is over 320 lbs., and the elevation change over my route is 55 metres with lots of ups, downs and stops (!)...and you know the speeds I like to achieve! lol
@@fun_ghoul Now I can see why!
@@vuaeco Yeah...load rises with the square. Damn physics! lol
What size/type of screwdriver is needed for these screws?
Thank you for the imformative video
Awesome teardown. Do you know the function of the middle battery terminal? I'm trying to trick a 40v kobalt mower to run off a generic 40v battery source. It powers on with just the + and - terminals connected, but errors out after a few seconds. Not sure if the middle kobalt terminal is just a thermistor I can imitate or some active component that would be harder. I don't have any kobalt batteries to test but would love if you had any insight. Thx.
Did the ultimate output battery have a tinny smell to it? Mine does and it’s brand new.
nicely done
Great video
Is the power increase between the old line and the new XTR just due to the battery upgrade?
Very nice and instructive video! I was wondering if it is possible to create a power bank by staking these in parallel while in their cases.
Yes, you can stack it: ua-cam.com/video/CSYB60GSLic/v-deo.html
Thank you so much
I guess the conclusion is that the older model is better , as it should have a better longivity because of better heat dissipation , with very slight difference in overall performance....I'm i right here?
But on the other hand , more cells means more changes of one going bad, ...What are you guys conclusions in the end? I rather have longevity than a little more performance.
What are you putiing a clip in battery terminal for anyways
Function Over Form 💡
Don't u lose voltage with the longer wire 🤔
Not "twice" the capacity, true cell capacity is measured in Wh not Ah.
-They're the same voltage, bozo.-
Sorry, I commented too soon.
40t in the new xtr awesome cells them thier over 4000mah
I love that no amount of years spent in 'murica can make you stop using the metric system! :-)
I grew up with the metrics system. The 'murica system is beyond ridiculous.
@@vuaeco Agreed. Born and raised on the Imperial system but I'm slowly converting. I dislike fractions a lot.
-Bosch pack is 5S, though, not 6S. Oops!-
(You literally said this when I pressed "play" again. Oops, indeed! You may point and laugh now...)
*Still* love ya tho, comrade.
I got a new 4.0 1st gen battery an it has orange battery cells in it you think they now started change the cells with better ones?
Looks like the orange may be Highstar brand battery cells based on this video. I think they are the same battery cell brand used in Walmart's Hyper Tough brand power tool batteries. So, I think it's actually a downgrade, but my thought is merely an assumption, not fact.
ua-cam.com/video/G6VX1QdhGRM/v-deo.html
@vuaeco It would be awesome to see you make a kobalt battery using 26650s!
I'm planning to make one with 2170 cells.
They should have made it "full length" so the pack could be thinner, IMO. It's like they just didn't want to change their packaging line at the plant or something...
EDIT: Having now watched the WHOLE video, I will grudgingly admit that Lowe's made the right decision on packaging vs. cycle life. I don't use tools as hard as that, but they're obviously mostly concerned about "power users" (READ: dissatisfied contractors wanting warranty replacements)!
Nice 40T cells, tho. -Legit 30 amp continuous pack, right there.- I said that before I noticed the "cell-level fuse" integrated into the new pack's nickel strips. For real high-current applications, you may well need to add more bus material...or just stick to the old packs!
Defo 40T cells. Samsung only makes one kind of 4000mAh cell.
"power users" are the ones who use these batteries for their go carts and ebike! :D
How is the Bosch battery so small, using 18650's and rated for 4A without being in parallel? I wont be buying their stuff, they must lie since there aren't any 18650's that do 4000mAh.
Perhaps they lie just a little bit and use 3.5Ah Sanyo's but then their output would be limited to 10A and that would suck.
The Bosch is outputting 18v, not 24. That's a 25% difference. The weight difference is basically the same. You better buy their stuff or else the Bosch police will come for you.
The Bosch Core18v are 21700, here is a tear down
m.ua-cam.com/video/vKLTxQQQooU/v-deo.html
@@Nocholas Not exactly. Bosch markets it's nominal voltage, while Kobalt markets max voltage. Bosch is 20V max, and the Kobalt is 24V max, which is a 20% difference.
Great show....just saying that in advance of watching....ha
Evergreen comment.
So in theory, could one not just put new 21700 cells into a battery and rebuild it once it reaches EOL?
The 21700 cells are significantly larger, so they could not be substituted for the 18650s, if that is what you were asking.
@@dperreno no. That’s not at all what I was asking. What I meant was if a battery has 21700 cells, why can’t you just replace them when the battery stops holding charge?
@@kennyburkhart3543 Oh, of course you can!
30 bucks less than the Ryobi 4ah and prolly better quality
So, in a nutshell, Lowe's contracted Chervon to build a pack with the same specs as the old one for cheaper.
I mean, right?
Absolutely. It's not just the same specs, it's bigger and bulkier! Once you see how small the Bosch 4Ah is, you would expect a battery with bigger cells to have more capacity but nope!
And they get to sell for more dollars. Sounds like a good business model for Lowes and its shareholders.
@@k24hatch IOW, rich people stay rich by fucking the rest of us over. With due respect, you're not breaking any new ground with that statement.