What makes a great Drone Battery?: Let's cut some open and find out!
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- Опубліковано 5 лип 2024
- *Lithium batteries are dangerous! Don't do this at home without the proper training and equipment. This video is NOT a how to guide.*
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Timestamps:
0:00 Intro
0:37 Don't do this at home!
1:21 Cutting open the WORST battery I've tested
6:20 Detailed teardown
8:24 Cutting open the BEST battery I've tested
12:13 Swiss Roll vs Layered construction
13:25 Now things get WEIRD: GNB 80C
15:16 Multi-Cell, Multi-Tab Swiss Roll
15:58 More packs, more different: GNB 70C
17:31 All the different battery constructions
18:20 Time for something bigger: 4S 1300mAh
26:16 Outro - Наука та технологія
wow, always pushing further the limits of understanding !! We are so lucky to have to have someone like you in the hobby !!
So this is what my saturday nights have come to ? Scary how much I enjoyed this 🙈
This was super interesting! Thanks for showing!
20:02 that plate looks like FR4 fibreglass PCB material
most likely g10
Interesting. What could be physically happening when we have a "bad" cell that is not keeping a charge (or matching the same voltage as adjacent cells)? Is it a breakdown of the chemical composition of a cathode or anode, or could it be due to degradation of the layers in between?
It could be a few different things. The anode material is liable to separate from the copper foil under thermal or mechanical stress. The same can happen for the metal oxides on the cathode but I think this is less common. Insufficient electrolyte can lead to dry areas within the battery.
I would guess it's mostly the layers separating to where there isn't good enough of contact for the electrons to move between the two materials
Absolutely fascinating video, Chris. Now I am curious to see the internal construction of all popular 4s-6s lipo brands. I would especially like to see what the new GNB lihvs look like inside with their claim of being the "better" kind of LIHV.
Lihv is just marketing
absolutely informative!! nice detective (scientific) work!!
I always wondered why GNB lipo's sucked , now I know. 👍
Wow! Thanks for this Chris!
awesome! I always feel guilty for not watching your videos, you put so much work into exploring all this info. this one i just could not miss, though! Not just FPV related, this effects every gadget that i love, even my car!
Agreed. Understanding how a battery works can only be beneficial, these days. I thought this was an awesome video.
Hi Chris, Thank you so much for the video.
This was very useful. I feel much more confident splitting this 6s pack into three 2s packs for my zorro transmitter. Thank you
This is so cool, thanks for this video!
So cool! Thanks for the info.
Thanks! - Fascinating
Good video, very Interesting, that was fun. reminded me of when I was a kid taking apart batteries
Its worth mentioning that NBD battery is rebranded Tattu
Maybe a part 2 series where you show what happens when they puff, catch fire.. there must be a fire lab you can borrow.
Thanks Chris,
Always good to understand these beasts.
Next up AOS batteries?
the only source for trustworthy battery data! thank you :)
Great video, Chris! The bouquet must have been exquisite ;-)
It would be interesting to know the total areas of the active electrodes. Those should generally correspond to the relative energy capacities, no?
(3rd bullet @ 12:53 matches 3rd bullet @ 13:08. Typo?)
Yes typo. The layered cell should say the opposite low internal resistance and higher power density
Looks good to me. Send it!
Ok this one got me to click the Bell, nice work Chris
Please do the same with more bigger batteries, like CNHL black, CNHL mini, Tattu, GNB etc. etc.
I will admit this is a very informative video. I appreciate that. Thank you for sharing this..
..with that said, i gotta know. When is the rosser Lipo coming out? 😂
When I figure out how to make the best one!
Good to understand how pur loved battery works 🙂and especially we learned which and why one it is better then other ... Many thanks 🙂
As Mr. Spock would say... fascinating. It was really interesting to see Chris doing the surgery on these batteries to see how they were constructed.
Thank-you Chris Rosser.
While the NNG results are pretty much what we already knew, the GNB insides is fascinating. I had always suspected the wider 1S cells are on-par or maybe even better than the Tattu folded cell equivalent, but it seems they may not be. Still, for the price and ease of purchase i think GNB are still good for 450 and up sizes
Very interesting. Thanks!
We could say that the layered construction of the newbee drone pack is actually 1S 12P :-)
When a cell "swells up", which parts of this construction are causing that effect? Is it the electrolyte that is converted to gas?
Another great video. I'm wondering what is the difference between the HV and "normal" batteries - what is it that makes the HV take higher voltage?
I’ll never open one, but very interesting as usual 👍
Отличная работа! 👍
Has the betafpv 1s 550mah lipos layered contruction too?
Btw... Really nice Video!🙏
Having just seen a video of a gensace 16ah go up i wonder if some manufacturers are more volatile than others.
Very interesting. Would like to learn the pros and cons of each construction method. It seems like the layered could be taken down by a single faulty layer, whereas the swiss roll might be more tolerant. Also, your first graphical representation depicts coating only on one side of the metal anode and cathode when clearly both sides were coated in the actual sample.
Are the NewBeeDrone stacked/folded style 1s batteries essentially 1s/Xp batteries with each acting as a separate cell?
What’s inside a lipo? FIRE ! At least when you cut it in half at 4.2V
Does this damage the battery?
Dumb question: Does it look the same inside a Li-Ion battery? Or is it just the chemical composition that changes?
Now put one back together and charge it up for one more test! (don't! 😂)
How bout li Ion? Is it a one big Swiss roll that's why it's low discharge rating?
How can we safely salvage the xt connecter and balance connecter from a dead liposuction?
Thabks alot for a great video !
I'm cutting a Li-Ion open for a video next week so stay tuned. To salvage the cables from a battery you need to fully discharge it to 0V using a quad followed by a LiPo killer or a suitable resistor (10R for 1S up to 220R for 6S). Once it measures 0V you can cut open the casing and desolder the wires. Be careful not to puncture the cells.
This was a very informative video, I love your content. How dangerous is the evaporating solvent and the electrolyte for your health? Did you wear a gas mask or took at least care for proper ventilation? At least when lipos are burning there will be hydrofluoric acid (HF) as a reaction product which is extremely dangerous. Does this also happen upon oxygen exposition? Please be careful and don't risk your health just for the sake of science.
Very interesting. Thanks for getting your hands dirty to disect those packs. Is GNB actually a manufacturer or "simply" a reseller that slaps their brand on a generic cell?
How do they get "damaged" from over charging or dropping below 3v? I've had batteries come back from the dead and last years.
I ate a whole swiss roll watching this
Beta FPV has a new battery series. The lava ones. They claim that for example the 2-4s 450mah is also a folded(layered) cell type. I wonder how these look.
They are made by the same factory that makes the NBD ones (Grepow).
While lipo is a different chemistry than liion, I've read where most of the time liion is what you actually get when you think you're buying lipo.
I wonder how much value a recycler gets out of a pack. A little bit of copper and aluminum. Any trace of lithium?
Most of the value is in the LiMnCoO2 on the aluminium foil. That stuff is really valuable.
Is it really fair to say better or worse? It seems like a trade off in terms of power vs energy density.
Mistake at 13:16 stats?
I noticed that too. The 3rd bullet is the same between the two types and appears to be incorrect on the layered/folded slide.
I find out what's inside every time I crash.
🙂
where is the lithium though
Hi,this video was awesome sir. Can you make a video on the weight of each component of a drone and how to optimize it within 200 gms. Please suggest something. I would gift you my product to you by post once i make that. :) An entrepreneur here from India.
Is there a reason why you dont mention Webleedfpv and Tinywhoop batteries? They both use folded cells like the newbedrone nectar golds.
I really wish good youtubers would learn when to use auto focus and when not to. If the subject your filming is not moving away or forward two times to focal length don't use auto focus great video till it felt like I was getting hit with a hammer in the head.
Ukraine has been manufacturing its own drone batteries from cylindrical lithium ion cells. These cells give more flight time than lipo's.
I find gnb batteries to be very low quality
Why are you calling them lithium ion when they're not, they're lithium polymer