LiFePO4 Aliexpress 32700 Cell 30A Max Discharge Test - ACCURATE!
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- Опубликовано: 1 окт 2024
- Testing a low cost, high capacity LiFePO4 Aliexpress 32700 cell using a 30A max discharge current! Can they handle it? Find out! We'll see if these high capacity lithium iron phosphate 32700 cells/batteries match up to the manufacturer's specs at 30A, and not get too hot during this accurate discharge test. Many asked about e-bike use for these cells. Enjoy the video, and be sure to share the video link. Thank you!
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ATTENTION: Besides RUclips not informing my 38,000 subscribers with ALL notifications set to ON when I upload new videos(only 250 watch), I watched 32 likes disappear from this video in just over 1 minute's time. After rating the video, and you liked the helpful tests in this video, please check your "Liked Videos" list later to see if it was removed. Thanks guys!
i thought youtube only played those games with videos that contain political views that youtube doesnt agree with
In the past 30 minutes, another 20 likes removed, at least 100 likes now removed. RUclips finally admits there's a problem, after saying everything is fine.
@Hassan Aitoufkir Do you have all notifications set to on. Including the app? So the list of channels you're subscribed to showed no check mark next to my channel name?
@@electronicsNmore The socket is supposed to send immediate information of changes (posts, comments, etc) while viewing. when you refresh you get it from the database, their database used to be real time but now it's scheduled to write everything in massive chunks every ?? seconds / minutes So assuming you're refreshing those will ofc disappear until it updates. But also they have some issue where they get lost sometimes in that big write probably, sites like reddit has way more issues with this... it's a bad model
It never ends with the dis-hororables attempting to shortchange decent folks. There's a special place for them down the road. I hope they realize that. No one gets out alive and they realize that. It all comes back to us in the end...
thank you for °F/°C conversion for us international viewers
You're welcome Mike! Be sure to rate thumbs up(even though it will likely be removed), and share. Thank you
Thank you very much. The performance tests look great! You've had the batteries for a while, what is your overall impression of them? Have any of the cells weakened? Do they still have good, low, output resistance.
The cells in this video are a second delivery, the first group used in my powerful spotlight, still good. For the money, they're pretty good. Thanks for watching!
Another awesome video.... now if I can only use these on my drone, it will fly for an hour easy!!! HA!!!!
Too bad they weren't lighter. :-) Glad you liked the video!
nice video
Very methodical in your testing. 👍So far I seem to be getting all notifications. There’s 2 choices for getting notified. Make sure it’s “All”. Hoping you get the viewers you deserve
Glad you liked it. You're one of the few getting notified. Thanks for watching!
why not remove the plastic cover and put a metal heat sink in a way to cool it off? Also doesn't the plastic cover make it go even hotter?
Interesting idea for another test. :-)
Interesting video ENM. I didn't realize that those batteries heated up that much. 🔥🔥🤔🤔
30 amps constant current discharge for that small size cell is a lot. I would suggest 25A max constant current, with intermittent 30A drain. Thanks for watching!
The thing that concerns me about these foreign source batteries, or basically anything from outside the US, is that a lot of this stuff does not pass through any kind of quality control process, meaning one person's test might turn out fine, but 50% of the others out there might not.
Anything is possible. Suppliers can change after I made this testing video.
still these wouldnt last long at 20-25A either, the ESR would get high enough with a few cycles where 20A would be too mch already. Id say keep it about 10-15A per cell, or otherwise pute more in parellel. You can use it at 30A if its just peak and not constant load.
Agree, intermittent use at 30A, constant at 20A should be OK.
Thanks for the video! Great test, I bought some haha
5900 versus 7000 advertised looks not like genuine Liito Kala cells - more refurbished and rewrapped ones caus that is 16% less than promised !
Will you get a 16% discount now after you have proven that you got 16% less than advertised ?
Strange vendor if you read the item title carefully:
2020 LiitoKala 3.2V 32700 7000mAh 6500mAh LiFePO4 Battery 35A
What are these cells you wanna buy, 7000 mAh or 6500 mAh ?
7% less would make a difference ... so what will we really get ?
I saw numerous sellers saying the same thing. My tests on 2 different purchases shows around 6000Ah. Thanks for watching!
@@electronicsNmore I think these sellers are trying to say "I'm lying about the capacity, but I can't do anything about it if I want to stay in business", so I'll give you a couple of numbers to make you question the capacity.
This is a problem with an under-regulated market - lies take over and there is very little a seller can do about it and stay in business.
I think you already know we are talking about milliAmp Hours (mAh)...... not Amp Hours! For people new to battery terminology that don't already know, there are 1000 milliamp hours to a single amp hour. So... for example a rating of 3 amp hours is the same thing as 3000 milliamp hours.
They're those new, radioactive, nuclear, LiFePO4 cells!
What a great video. Pity the channel is being hammered by RUclips's certified insane algorithm.
Try taking a poll - ask people to let you know if they clicked the "Like" button in the comments to get actual "Likes" numbers. You don't know if the likes that were taken away were legitimate likes in the first place.
Now to the essence of this excellent video! 1C is the nominal discharge for LiFePO4 chemistry (I think). If true, these cells should be discharged at 6A with only short term discharge at 2C or 12A and never above that if you don't want to seriously degrade them.
I think about these discharge rates as fundamental to the chemistry and not much to do with the manufacturer. LiPo cells are better suited to the high discharge rates you are subjecting these poor LiFePO4 cells to. Cheers, and keep them coming!
I know for fact they were removed. I have time stamp and like count still shots. Irrefutable proof, not to mention its impossible to only have 78 likes on a popular video subject like this after 10 hrs. Normal count would be roughly 185
@@electronicsNmore Fair enough. As I said the YT algorithm is certified insane...good thing its not running anything important like the defence forces or in charge of payments...oh wait!
It looks like these newer cells have lower internal resistance compared to your previously tested cells.
I didn't test the IR, they should be about the same. Thanks for watching! Be sure to share.
So do they bounce higher when fully charged than when discharged? Get the ladder! 😄 No flaming me, man, it's been weeks since I made a "drop test" comment! 😊
This ain't alkaline! :-)
@@electronicsNmore It's still a tube full of electrons! Of course, being lithium based they may well explode and burn when you drop them. Better do that test outside. 😜
Planning to use it for syma x5c!
As long as the battery pack weight won't be an issue, it should work well. Thanks for watching
Can they be charged as fast as they van be discharged? If so they could be used in electric vehicles with regenerative braking. A Civic hybrid with Nimh cells charges at 100 amp max.
"5 thousand 700 amp hours". Wow! That's amazing for such a small battery.
Great testing, a lot of lithium batteries have low capacity, so if I want true capacity batteries I will go buy them acording to test results.
Thanks for watching Martin! Be sure to rate thumbs up and share.
@@electronicsNmore I did, great comtent deservs thumbs up !
At 4:50 I'm curious if the end cell is heating more than the other cells due to cable heating or sires current, might you know? Thanks.
You say these have 5900mAh? while 18650s have at most 2500? are you saying for all 4 batteries or a single battery? That'd make them almost 3 times the capacity (watt hours) of lithium ion? I doubt it.. (unless it was for all 4 batteries combined)
Incorrect, 18650 I tested have as high as 3400-3500mAh. (1) 32700 cell is roughly 5900mAh.
Aren't these cells supposed to be rated at 7ah. I just built a 12v battery with 12p 4s. I'm thinking it's supposed to be at around 84ah. But could be more like 78ah
What they're supposed to be and what they are......2 different things. We're talking Chinese made cells.
I ordered these same cells 2 weeks ago. Hope to use them as a motorcycle battery. I hope they can deliver enough instantaneous current.
A small scooter up to 150cc should be fine.
@@electronicsNmore 750cc 4cyl.
I'll report my experience when they arrive.
Too big. You'll need a 20Ah battery for that engine. If you place 3 groups of 37200's in parallel, then a 18Ah LifePO4 will work fine. Still cheaper than a lead acid. Around 50 bucks for 12 cells.
@@electronicsNmore The factory battery is a 12Ah Lead-Acid capable of 260A CCA. I will try with the 1P4S and see what happens. 3P4S of these cells would not even fit in the battery compartment.
@@JohnDoe-ex8gf so how did it go?
This is pretty cool
Thanks for watching Nate! Be sure to rate thumbs up and share.
5900 amp hours? Did you mean milliamp hours? Good video, thanks!
Pretty sure I didn't say that in the video. 5900mAh or 5.9Ah
Thanks for the informative video. Is it possible to use 32700 as a car battery? Kit of 20 (20x4) will be enough regarding capacity. However is it possible to start the engine ? As the engine start process is very quick do we have temperature problems ?
Motorcycles, yes, cars no. You'd have to place a few groups of cells in parallel.
@@electronicsNmore S4P20 configuration is enough for car battery, why it is not possible to use in car?
Forgive me for asking, but are LiFePO4 cells not nominal voltage = 3.2V
(The spec thumbnail at 01:02 shows nominal Voltage = 3.7V AND charging voltage = 3.65V)?
[Even the cell pics at Aliexpress show *3.2V* ]
I suspect a typo on the spec sheet - it should be *3.2V* - not *3.7V* !
Never be afraid to ask a question. Yes, nominal 3.2v, 3.65v or 3.7v charging voltage will be fine. Thanks for watching, and be sure to rate thumbs up, share the video link, and check out my very wide range of videos.
@@electronicsNmore Did you notice the *"Nominal Voltage = 3.7V"* typo?
@@joatmofa0405 When you watch the video and look at the aliexpress, there are inconsistencies all over. That is just a normal chinese product lol
Yep, yet there is a video that is based on the inconsistent and incorrect data?
Why the hell that this guy said testing 30A discharge. I only see 15A discharge throughout the video.
Why u say 3.5 is fully charged!? Nominal is 3.7! Full charge should be 4.2... Right!?!?
Who said 3.5? 3.65! LOL
It sounds like you are thinking about LiPo cells - the cells in this video are LiFePO4 cells - the cell chemistry and voltages are different between LiPo and LeFEPO4 .
@@MiniLuv-1984 he is right.. you charge those to 4.2V.. charging is similar to sla
@@ohmslaw6856 You will only do that once :)
@@MiniLuv-1984 more likely he is confusing 18650s or 26650s which are Li-ion, not LiPo. But yea both are normally 4.2-4.35max which LiFePO4 (not LeFEPO4) isn't. It's quite a bit lower voltage. 3.2 is usually the nominal there.