You did a very effective pack level internal resistance measurement right there. 100A additional load resulted in an additional voltage drop across the pack (cells and interconnects) of approximately 0.3 V. R = V / I = 0.3 / 100 = 0.003 ohm for the complete pack or approximately 0.00075 ohm per cell neglecting the interconnect resistance

This is an incredible video by someone who really understands what he is doing. Rare to find on KZread.

@electronicsNmore

3 жыл бұрын

Thanks for the nice comment! Be sure to look over my extensive video playlists below for many other videos of interest to you, and most importantly take one minute to share a link to my channel with others on social networking sites. Thank you kzread.infoplaylists

Excellent video! LiFePO4 technology is impressive! Always a thumbs up from me!

@electronicsNmore

4 жыл бұрын

Glad you enjoyed the video! Compared to lead acid batteries, they're way better. Thanks for watching!

@JM-yx1lm

3 жыл бұрын

Hello Todd!!!

@trinitodedone186

3 жыл бұрын

you should make a comp video comparing all the liths!?

I bought these and had a bad cell that lowered pack capacity below advertised, unfortunately. I'm glad you were lucky enough to get a good pack! Very nice 🙂

@electronicsNmore

3 жыл бұрын

So far, no problem with the cells, but the real test is to cycle them 3-5 times a week for 6 - 12 months to see how the capacity rating holds up. Nice to see your channel is doing well. Thanks for watching!

@Willsmokalot

3 жыл бұрын

@@electronicsNmore it's been a few months how are they holding up?

@electronicsNmore

3 жыл бұрын

@@Willsmokalot I mentioned it in my newer video below. kzread.info/dash/bejne/naeL25eOnMfFk7A.html

@narasimha7446

2 жыл бұрын

@@electronicsNmore pa

I am liking the fully assembled battery pack, the cable management done here is great including the circuit breaker installation. Great video!

@electronicsNmore

4 жыл бұрын

The fully assembled are pricey if the cells are good capacity. Thanks for watching!

@BrainHurricanes

4 жыл бұрын

@@electronicsNmore Aren't you afraid of the balance cables under the bus bars ? I guess no problem if the battery stays stationairy. Thanks for a great video.

@electronicsNmore

4 жыл бұрын

@@BrainHurricanes If used in a vehicle, then yes, I'd secure them better, but for sitting on a shelf or floor, no problem. Thanks for watching!

Nice and tidy job on the BMS balance lines. Some people are afraid to cut them to length claiming it throws off the voltages. LOL Cutting off a few inches makes little differences and looks so much better . Much safer in the end.

@electronicsNmore

4 жыл бұрын

Thanks. Since the BMS uses low current to balance, trimming the wires should have very little if any effect.

Wow, I shouldn't have been drinking wine before watching this, but your presentation is GREAT 🙂

veeeeery methodical, the only way to learn such stuff, for me. theory is good, but I can only mesmerize and learn through a practical test, and other praxis-testers are too messy for me... big thanks!

@electronicsNmore

3 жыл бұрын

Glad you liked it Klaus! Be sure to look over my video playlists below for many other videos of interest to you, and most importantly take one minute to share a link to my channel with others on social networking sites. Thank you kzread.infoplaylists

fantastic job done on the capacity test !!!

@electronicsNmore

3 жыл бұрын

Thank you! Be sure to share the video link with others.

This is one of your best- Great Job!

@electronicsNmore

4 жыл бұрын

Glad you think so!

Thank you that's exactly what I need. I am thinking of getting one pack to start. Add on the bms etc. Then possibly add another later as funds allow!

@electronicsNmore

3 жыл бұрын

You're welcome. Do it little by little if you have to. If you make a purchase, be sure to use the provided links and coupon codes. Thank you!

Great video! We are getting into the Aluminum Case LFP cells, missing the old CALB plastic case ones. We are going to be making some videos on them soon!

@electronicsNmore

3 жыл бұрын

Glad you liked the video! I just watched 2 of your videos. Very nice. I know Eric at Big Battery. He's a nice guy.

@HighTechLab

3 жыл бұрын

@@electronicsNmore sweet!! Thanks for stopping by!

@electronicsNmore

3 жыл бұрын

@@HighTechLab I really enjoyed the big battery tour video.

Hi Doug. These would be awesome for lots of uses. Has always I Liked,shared. All my best.

@electronicsNmore

4 жыл бұрын

Thanks Bobby! Stay safe.

Great Video. You mentioned cycle testing.... I don’t know if you’ve looked at any of the ISDT or iChargers. But they’re inexpensive and completely automate the types of tests you do on your battery reviews. I personally use the ISDT Q8 and I have an iCharger S6 that should be here tomorrow. I ordered the iCharge S6 because it does data logging and allows more in-depth customization of precharge characteristics. And the ability to add external load to increase discharge rate which is automatically figured into the logs. From what I understand. I have a Rigol DL3021 and a couple DP832’s todo automated cycle testing. But I cant afford for them to be occupied anymore for a single battery test months on end because I need them for testing other equipment on a day basis.

@electronicsNmore

3 жыл бұрын

Thanks for the info Justin! Glad you liked the video.

What are you using as a charger to recharge battery after discharge? Thanks much for all your videos!!

Thanks for your great videos! Very informative and professionally done. May I ask how the Volts vs Time plot at minute 8:22 was recorded? Did you just look at the displayed voltage and recoded the time? Cheers.

@electronicsNmore

3 жыл бұрын

Recorded the voltage every 15 minutes.

nice test, thanks.

@electronicsNmore

4 жыл бұрын

You're welcome! Please share. Thanks

I have 32 ea of the' 50Ah versions of these cell. Configured 2P*4S series to make 24v again 2P. They appear to have been made by the same maker. Quite Pleased with them. They make up the back bone of my Solar Power Closet . Pb Acid batteries aren't even considered any more. I'll be using your tape Idea on a build for my Mother in Law. Last month similar cells were purchased for that build. Wish you got there first. I like these. Will be looking into the BMS they have to offer. Looking for 150esh Amp Rating.

@electronicsNmore

4 жыл бұрын

Wow, that's a lot of cells! The company sells all types of BMS, but I bought mine before I got the cells. The 3M tape is strong stuff, the bond strength increases over time. Thanks for watching!

love the videos about this setup. Question. I'm looking to use a solar setup for mobile purpose. I have a mobile detailing business and run power washers and vacuums. So was looking for guidance on what i would need to make using solar to power these things (most times a pressure washer and something else would be running at the same time).

@electronicsNmore

3 жыл бұрын

How much room do you have for panels?

Another great video. I'm going to have to look at those cells for an upcoming build. I was curious about the internal impedance measurement. It kinda looked like you had the meter on the 2ohm scale. Could you set it to the 0.2 ohm scale and get more resolution?

@wiredkat

4 жыл бұрын

I just realized that the 0.2ohm range also has a voltage listed next to it. I thought that voltage only applied to using the voltage scale. Does this mean you can't use the most sensitive ohm scale even with such a low voltage cell? The ones I've seen listed for sale online show 100V next to the most sensitive ohm scale so I'm thinking it would be fine to use the most sensitive setting.

@electronicsNmore

4 жыл бұрын

Hi Steve. Glad you enjoyed the video. The manual says to set the range to the correct voltage level. The 2V range is in ohms. Thanks for watching!

I love this. Perfection!

@electronicsNmore

3 жыл бұрын

Glad you enjoyed it! Be sure to look over my video playlists below for many other videos of interest to you, and most importantly take one minute to share a link to my channel with others on social networking sites. Thanks kzread.infoplaylists

Simply educationally outstanding!👍👍👍

@electronicsNmore

3 жыл бұрын

Glad you think so Catherine! Be sure to look over my extensive video playlists below for many other videos of interest to you, and most importantly take one minute to share a link to my channel with others on social networking sites. Thank you! kzread.infoplaylists

@catherineharris4746

3 жыл бұрын

@@electronicsNmore You got it👍

Thanks for the demo... Just bought 4 cells and the BMS the smart version. Let's see ;-)

@electronicsNmore

3 жыл бұрын

Youre welcome Mike! Use the provided links? If so, thanks for your support.

@MichelPikkaart

3 жыл бұрын

@@electronicsNmore Yes I did use the links ;-) I bought the circuit breaker the 100A version, which I shouldn't according to your next video :( any advise for a good circuit breaker of 100A which has a good availability in Europe ?

@electronicsNmore

3 жыл бұрын

@@MichelPikkaart I'm surprised you bought it, I warned viewers in the video description area where the link is.

Hi sir how to differentiate or identify lifepo4 cells as 1C and 3C cells in market all looks same 6ah 3.2v cells

Excellent as usual. Would you please let us know about batteries ,not made from any chemical but capacitors, a brand Zoxcell energy storage, they use super capacitor, 10 years warranty and 30+ years life . Safe, quick charge discharge.

@electronicsNmore

3 жыл бұрын

Thank you. I just messaged the company. If the cost isn't too outrageous, I'll buy 6 for a video. I'm not lucky like some YT channels that get thousands of dollars per month in donations on Patreon. I also don't get enough exposure to spend a lot of money making a video. Appreciate the suggestion!

Thanks for the video. I am just diving into solar, and getting batteries. $600 for 4 of these 3 volt batteries seems reasonable. Do you have to fully discharge the batteries before you can use them?

@electronicsNmore

3 жыл бұрын

You're welcome! No, you don't have to do that. Be sure to use the link provided if you do decide to buy. It doesn't cost you more, and I get a small cut to help fund the creation of new videos. Thank you

I would love to see just one of these cells at 12 volt 120 amp hour I'll be on my kayak all day !!! And last for 10 years now that might be worth $800

Nice video, I'm planning to get one of these as a backup for my Laptop. How long do you think a 200W Laptop would last when being charged constantly on a fully charged 120AH battery?

@electronicsNmore

3 жыл бұрын

If your laptop is Input: 100-240V ~2.9A 50-60Hz & Output: 19.5V 10.3A 200W, you'll also need a power inverter. The number of hours will vary based on CPU load, screen brightness, etc.

Those Batteries are a game changer and becoming popular as the people is learning and understanding (LiFePO4) the DIY banks. I like them but cant afford a good number of the at the moment, I was learning about 18650 lithium but these ones goes over every thing and safety parameters. i`m a golf cart battery user an they work but never compare with Lifepo4, thank for the video and data. Tesla are very popular but too expensive and they mount the batteries on the garage., Ask them why they dont install the batteries inside the house , (you can figure why) Please share if you find better prices in those batteries and keep the good work. Regards From Puerto Rico....

@electronicsNmore

4 жыл бұрын

Thanks for watching Luis! Unfortunately, they're pricey, but compared to others being sold online, they're reasonably priced. I can't recommend another cell that I didn't test. I hope you did OK with the storm.

Terrific video ENM! However, I was curious as to what the average person would be able to use those very expensive batteries for? I mean would they replace a car battery for example? Seems rather expensive & not worth the money over time. Or, are these batteries strickly for use with solar type set ups? Just curious.......👍👍😉😉😷😷

@electronicsNmore

4 жыл бұрын

Thanks Steve! Glad you enjoyed it. Many applications for high current drain. Ideal for off-grid solar. They absolutely blow away lead acid batteries. You can also use them in a car.

Great video, question: can I lay the cell side way? Will it leak or effect performance? I am building a power box and laying side way give me more room to play with , thanks

@electronicsNmore

3 жыл бұрын

Bad idea. In the event the cell needs to vent, you may release electrolyte instead of a gas.

@huysworld701

3 жыл бұрын

@@electronicsNmore yup you are right.. Will Prowse newest leaking vid just prove your point... thanks

Nice build! And thank you for a good video 👌👍🏻 I have been looking for a fuse holder, and read some reviews on the automatic fuse you have. Some had problem it get HOT... And for some it didn't work. I not sure I will trust it... even if it work now, will it after a few years, expose to moisture.. What you think?

@electronicsNmore

3 жыл бұрын

That video is coming up! Don't but the breaker in this video, buy a Blue Sea or Bussman!

@Dan-LS

3 жыл бұрын

@@electronicsNmore ahh... Ok, Waiting for the video 😁👍🏻 Blue Sea I look at too, I guess too expensive, but quality. I think I will use a regular fuse to my build, still looking. But it looking nice in your setup with the auto fuse on the side and the copper connection 👌

@electronicsNmore

3 жыл бұрын

@@Dan-LS Another week it should be out.

Good video, but you could have gotten a more useful baseline reading of the internal resistance of the pack before the BMS. Maybe you could post it here since it is so easy to do, just disconnect one leg of the BMS first. Also, if you keep the pack away from heat, it should last the rated life.

@electronicsNmore

4 жыл бұрын

True. I can test all 4 in series. I'll test now and post the result.

@Inspironator

4 жыл бұрын

@@electronicsNmore Great.

@electronicsNmore

4 жыл бұрын

@@Inspironator Not much difference. Now it stays mostly on 1, and every several seconds shows 2.

@Inspironator

4 жыл бұрын

@@electronicsNmore That's good, and reasonable for such large area cells, way better than lead acid and if you keep them at room temperature, you should get 10 years with more than 80% capacity remaining. Maybe give an update in 2 years. 😉

Hi there what about those 135Ah ? I mean what is their maximum current charge? Thanks a lot

Those are some high quality cells! Usually people see MUCH more voltage drop with their "Grade A" cells How do you get your cells to rest at such a high voltage? 14.20 is 3.55V and I typically can't get my smaller cells to stay above 3.45V

Was waiting for this. I have an inverter with a 100Ah lead acid battery that needs to be replaced every 4 years or so. I calculated that a 100Ah LiFePO4 would cost a little more than double of the lead acid one (India). Do you think I should go for it?

@electronicsNmore

4 жыл бұрын

The lead acid battery is no match for the LiFePO4. Thanks for watching Krish!

Did you charge the batteries with the east tester 5420?? how log did it take to charge?

Nice Video. . Sir how about if I only have 100Ah, is it okay to used 200A DC fuse. Thank you.

@electronicsNmore

3 жыл бұрын

I'd drop to 175A, but a 200A fast blow may be OK.

I just got my lifepo4 pack with bms. I'm going to have to watch your video another 100 times till I understand a tenth of it. I have a question about changing. Do you take the pack to 100% charge, and how low do you allow the packs % to drop to before recharge? Or can you keep the pack charging and peaked out while in use. And can you charge while in use? I hope to hear back from you and your friends. Thank you

@electronicsNmore

3 жыл бұрын

Hi Tim. You can fully drain them, the BMS will cut the power output if the voltage drops too low. Ideally, to extend cell life, stay above 20%, which is around 12.9v. You can drain them as you charge.

@TimShedsworld

3 жыл бұрын

@@electronicsNmore thank you for that information about drainage, the second part I need to know if you can top them off at 100% without doing damage? This is a big worry for me. I hear to not let them go to 100%. But the people given the information is basing their information from cell phone batteries.

Hi please can i ask what bms u should use for 16pcs of lifepo4 90ah to make 12v 360ah? Is it ok to use same like yours bms? also I no need more than 100amp

nice i like it about circuit breaker tight on bus bar

@electronicsNmore

3 жыл бұрын

Glad you like it

Muito top demais essa informação 👏👏👏👏

I need a 200 AH 12,8V battery. Which is better? A single 200AH battery pack or 2x100AH packs connected in parallel, each of them with separate BMS? Thanks!

@electronicsNmore

3 жыл бұрын

I'd go with the 200A cells the company sells with the properly sized BMS. Thanks for watching!

@szekerespista3758

3 жыл бұрын

electronicsNmore thanks for the response. It is good to use a larger capacity BMS or need to be the same value? - For safety reason can i use 250A BMS in case of 200A cells.?

Could these batteries be used in deep discharge marine applications?

@electronicsNmore

3 жыл бұрын

Absolutely.

I liked the video and the product, but why, I know it is China and maybe me being picky, do they not colour the terminals red for Positive and black for negative. The fact they have used Black for positive is not good even though they have stamped the symbol on the terminal, it could be confusing

@electronicsNmore

4 жыл бұрын

Agree 100%. Should've made red and black. Thanks for watching!

@JM-yx1lm

3 жыл бұрын

The ONE thing the Chinese DIDNT copy correctly!!!

Good stuff

@electronicsNmore

4 жыл бұрын

Glad you enjoyed it! Thanks for watching

Nice test. Why the Daly BMS ? Expensive for a small battery, no?

@electronicsNmore

3 жыл бұрын

It allows high current charging(50A), 100A continuous power output, and short intervals of output up to 200a. It's good. Thanks for watching!

@karlhoffmann5453

3 жыл бұрын

@@electronicsNmoreLö

Sir can you give me a link for the Bms that you are using to your demo.. and can be use for lifepo4 3.2V/ 200Ah?

@electronicsNmore

3 жыл бұрын

In the video description area I have product links. For a 200Ah battery, I'd use a BMS above 100A continuous.

you should get more than the rated 120ah as your discharge c rating was below 1C

@electronicsNmore

4 жыл бұрын

Yes. I personally would never pull 120A continuously off the battery, maybe 80 - 100A max. I don't like operating at the maximum, prefer longer life using lower levels of current draw. Thanks for watching!

Great vid as ever, unfortunately though these are Grade B cells.......Grade A would be 150 Ah regards kev

@electronicsNmore

3 жыл бұрын

You must be confusing the cells in this video with the Aliexpress cells shown on DIY solar's channel. These have a QR code for warranty purposes, were tested and show excellent capacity, and not bought from Ali. They sell 120Ah cells, many 12v 120Ah batteries use 120 Ah cells.

how did the 750w inverter power the 1200w hairdryer?

@electronicsNmore

3 жыл бұрын

Has different settings. :-)

if i have 4 x 12V batteries and want to do a 24V system, is it better to hook them up into: 2 in series + 2 in series and those in paralel or 2 parallel + 2 parallel and those in series ? as allways there are folks that say the first is better and other say the latter is better ...

@electronicsNmore

3 жыл бұрын

2 in series, then both groups in parallel.

@Broxine

3 жыл бұрын

electronicsNmore thanks. Whats the pro/con of the connection type you mentioned?

They'd certainly be great in RVs - lower weight for one thing.

@electronicsNmore

4 жыл бұрын

I agree, perfect for that.

@darthbubba866

4 жыл бұрын

@@electronicsNmore As it turns out there's a burgeoning LiFePO4 battery industry for RVs already in existence. They're quite expensive, but based on the reviews they might never need replacement for many weekend RV campers. Off-grid power storage is, of course, a different application.

Good video

@electronicsNmore

4 жыл бұрын

Glad you enjoyed it Ed!

And the video created a PERPETUAL shortage of those Chinese cells for the foreseeable future...nice job! ;)

@electronicsNmore

3 жыл бұрын

LOL Thank you!

Which one is better? This cell or Winston Thundersky cell?

@electronicsNmore

3 жыл бұрын

Not sure about the Winston, but these performed very well. Thanks for watching!

so aparently bls is not a manufacturer but a reseller as ive read in will's forum. do we have a brand name for those cells? what is the actual cell type or manufacturer? nice video but still need more info. i understand its not an easy market but o think we should start calling things by their name, not just grade A cells...

@electronicsNmore

3 жыл бұрын

The company told me they have been manufacturing batteries for years.

If I use 16 100ah batteries all connected together do I need to use just one 48 volt bms for all or a 12 volt bms for every 4 batteries?

@3:45 Could this be deliberate for airflow?

@Ressy66

4 жыл бұрын

n/m ahaha a few seconds later you make same conclusion :)

@electronicsNmore

4 жыл бұрын

It's either a manufacturing flaw, or something that was done deliberately to prevent very warm/hot cells being too close to the others. Thanks for watching! Please share.

Berapa harga batrenya bos

I am new to batteries and electronics. If I connect 4 of these cells do I end up with 480Ah? Seems to good to be true, right?

@electronicsNmore

3 жыл бұрын

4 of these cells in parallel will give you 480Ah at a nominal 3.6v

@pawelkapica5363

3 жыл бұрын

@@electronicsNmore and in series 135Ah at 12V right?

If they sell to aus at a decent price I might consider this.

@electronicsNmore

4 жыл бұрын

Not sure if they do, check out the website using the provided link. Thank you!

That looks like you'll be installing that in one of your vehicles.

@electronicsNmore

4 жыл бұрын

No, I'll be using it with (3) 400W solar panels, and a 1500 - 2000W inverter. Thanks for watching!

can you give me discount code for bls batteries

Isn't brass like 20% as conductive as copper? I'd think hobby shop aluminum would be a better choice.

@electronicsNmore

3 жыл бұрын

Brass is used in many electrical devices, especially marine. I checked the battery under load using my Infrared camera, all is well.

you no longer need balancers with the BMS ?

@electronicsNmore

3 жыл бұрын

The BMS does all the work.

@fritz_the_superkraut

3 жыл бұрын

@@electronicsNmore I want to build a 280Ah battery like you have it. but with a Daly BMS. I'm not sure if balancers are integrated.

Discharging till 0%, won't damage your batteries?

@electronicsNmore

Жыл бұрын

No, but it will likely reduce cycle life if done all the time.

@argi0505

Жыл бұрын

@@electronicsNmore thank you!!!

Please check the BMS connections to the cells.

@electronicsNmore

3 жыл бұрын

Nothing wrong with the BMS connections. As long as the plates are thick, and the bolts torqued down the same, it makes no difference where along the bar between the (+ or -) that the wire is connected. I performed voltage measurement tests using a 100A load, and the the difference across the plate was negligible. I've charged and discharged the battery many time with no issues. To stop people from complaining, I placed the wires at the (+) terminals.

@saidt.8200

3 жыл бұрын

You have a red(+) BMS wire connected to the (-) on the second and third cells from the left All BMS red wires connect to the (+) of each cell and the black wire connect to the battery negative

@electronicsNmore

3 жыл бұрын

@@saidt.8200 Did you even read what I said? LOL

@saidt.8200

3 жыл бұрын

No need to be sarcastic. Just chill.

@saidt.8200

3 жыл бұрын

Always keep in mind the perspectives of people viewing this material therefore the need to be clear precise and straightforward as much as you can if you want this material to be of help

great batteries, safe and durable. but we cannot know long term. just hope to last :)

@electronicsNmore

4 жыл бұрын

You're right Paul, we have no idea how well they will do over several months or years of cycling. Thanks for watching! Be sure to share the video link with others.

@zarbonida

3 жыл бұрын

@@electronicsNmore i am using LiFePO4 (plastic case) since 2010 and they still have the same capacity at 0.2C test (400Ah) in 2020. They are great!

I have Yinlong LTO 2.4v and just lost electricity I keep my Batteries charged at 2.45v which is about 91% charged “ to make 1 pot of coffee 12 cups I had to us 20 of my batteries grouped in 5 batteries in series gave me 12.25v my inverter is a 12v pure sine wave 1500Watts it took me using 4sets of 5 batteries to make 1 pot of coffee !

Does it comes with its own BMS??

@electronicsNmore

3 жыл бұрын

No. The BMS you see attached to the 12V battery you have to buy.

I am confused are 4 of these 120AH or 480AH

@electronicsNmore

3 жыл бұрын

(4) in parallel gives you 480Ah, (4) in series is 120Ah. Thanks for watching!

You think i can run a 12" chop saw for 2 hours with that unit?

@electronicsNmore

3 жыл бұрын

Not continuously under load.

@Akuza1000

3 жыл бұрын

@@electronicsNmore what if I 2x the battery pack? Installed in a pelican case.?

little bit smartassing: MINIMUM discharge voltage ;)

It doesn't look like your BMS leads go to all of the positive posts. It also appears you shortened some of them, which will change the resistance and cause them to not charge the cells equally, from my understanding. Lastly, failing to crimp ends on to the BMS leads, and squeezing bare wire between the bus bar and the battery terminal is a definite short cut. Maybe that was only done for testing?

@electronicsNmore

3 жыл бұрын

It's connected properly, in the correct order. Shortening the small balance wires will have a negligible or no effect on the BMS. They're short to begin with. As for the BMS wire attachment, there's not much difference between adding a crimp connector, then squashing it down at the post with a nut, or taking the copper wire, stripping the end off and wrapping it around the post between the plates and and using the plates to squash it down. Both secure. Thanks for watching

@jasonbroom7147

3 жыл бұрын

@@electronicsNmore The BMS leads are supposed to be as follows; first cell negative, first cell positive, second cell positive, third cell positive and fourth cell positive. In your video, at the 9:15 mark, the leads are clearly connected to; first cell negative, second cell negative, third cell negative AND positive, fourth cell positive. If that is an acceptable alternative wiring method, it is one I am not acquainted with. The length of the BMS lead wires is important because they are of such a small gauge. If they are to report accurate resistance data to the BMS board, they should absolutely be the same length. That is why every single BMS lead wiring assembly includes wires of the same length. Did you shorten some of the wires in this video? The connection between bus bar and battery terminal should be flush and unimpeded by loose, unterminated wires. If you insist on taking shortcuts and not crimping a terminal onto the BMS leads, at least put the loose wires between the bus bar and the nut which holds it down, so the bus bar can make a full and solid connection to the battery terminal. Overall, your video is very good, but if you're going to present stuff like this to a large, public audience, do it correctly.

@electronicsNmore

3 жыл бұрын

@@jasonbroom7147 Ok, so it's now apparent that I'm dealing with a pedant. The connection between 2 cells is BOTH (+ & -). According to your logic, the voltage is going to measure different at each end of the same metal bar connecting both posts together. LOL. Once again, the wire length is negligible, I'd be more concerned about the cells having a mismatch of internal resistance, you seem to ignore that and place higher importance on less important things. As for the connection, use a terminal end if if makes you happy. Done feeling important? I hope so. Have a great New Year!

@jasonbroom7147

3 жыл бұрын

@@electronicsNmore I'm not trying to be annoying, but this is important stuff. You don't have a lead going to the positive side of either of the first two cells, so how can the BMS balance those? DC voltage is affected by length of run; more so as the gauge of wire gets smaller. Solid connection between bus bar and terminal IS important, as is proper termination of wire ends. I could let any one of these three mistakes slide, but all of them? Someone else could watch your video and mistakenly think this is "OK". Would it kill you to issue a simple mea culpa?

@electronicsNmore

3 жыл бұрын

@@jasonbroom7147 You apparently don't understand English too well, you repeated the same thing after what I said. If you have a problem with my work or videos, then don't watch them. I don't upload videos to deal with pedants. You wasted enough of my time.

The capacity of this 4 battery its 480AH?

@DavidJohnk

3 жыл бұрын

No it's still 120 ah, but over 12.8 nominal volts. You get 4x the watt hours. It's in series.

@electronicsNmore

3 жыл бұрын

The capacity stays the same, unless you place (4) cells in parallel, then you get 480Ah.

2:12 why the black terminal is positive that’s confusing

@electronicsNmore

3 жыл бұрын

I agree, the should have used red for POS.

@fading_starz4070

3 жыл бұрын

@@electronicsNmore you’ll spend all that money and cause a quick disaster on these batteries

@electronicsNmore

3 жыл бұрын

@@fading_starz4070 You can lay a red washer or red felt ring over the POS post to avoid confusion.

Make buck converter lifepo4 battery charger plss😊😁

@electronicsNmore

3 жыл бұрын

Check out my other video. I use the PSU for charging this battery. kzread.info/dash/bejne/ZXWsqsqteqiYh8Y.html

Elsewhere in the world these exact 175 x 175 x 50 120 ah 3.2v cells are online for $130 for 4 peices. But my good old USA... he says $899 for a 4 cell battery...

@electronicsNmore

3 жыл бұрын

Really? Show a link.

@jb5music

3 жыл бұрын

MYR 134.31=($33aprox) Min. Order : 4 Pieces 3.2v120ah lifepo4 battery cell for RV/Solar system

@jb5music

3 жыл бұрын

If you order from there tarriffs will apply probably

i want you to review this in october....

@electronicsNmore

3 жыл бұрын

Why October?

@syncrovanCos

3 жыл бұрын

@@electronicsNmore Probably because ge want to see how this behave in time. I'm also curious.

@electronicsNmore

3 жыл бұрын

@@syncrovanCos Check out my latest video below for an update. kzread.info/dash/bejne/naeL25eOnMfFk7A.html

Hi, what is the brand of your lipo4 cell

@electronicsNmore

3 жыл бұрын

I posted a link in the video description area of the video.

Your BMS wiring does not appear correct, in that the 1st red line is NOT attached to the 1st positive terminal ( it is connected to the 2nd negative terminal) and your 2nd and 3rd red lines are on 1 battery, i.e. on a positive AND negative terminal.... Unless my eyes are deceiving me this should be corrected.

@electronicsNmore

3 жыл бұрын

It's connected properly. All cells are in balance, I checked a few times. Thanks for watching!

@bizeigel

3 жыл бұрын

Agree with OK Corral. My Daly bms directions Blue wire to cell 1 negative ( B-) , Black same place. Red wire #1 to 1 st cell positive (B1+) Red #2 to 2nd cell positive, Red #3 to 3rd cell positive, Red #4 to 4th cell positive.

I want make 240v (3.2×80= 256 volt 40ah) batteries bank lfp

@electronicsNmore

3 жыл бұрын

A lot of money.

I came here thought your new video. As you said in this video companies are not honest about their rating, but like your new video how the fuse is not. Due to incompetence or due to lack of morals? I had nothing to say on your newer video but I assume the fuse was made in asia?

I'd need 8 and still 10ah less than the 250 from two 6v lead acid I have and not cost efficient!

@electronicsNmore

4 жыл бұрын

You cant compare lead acid to these cells. Different chemistry, stable output voltage, deep cycling, and last years longer.

@JT-lq4yd

4 жыл бұрын

If there are no manufacturing defects and quality components were used, these will outlast and store more power. We have 4, 6 volt, 225 ah batteries on scissor lifts, they are only 2 years old and cannot sustain voltage to keep equipment running at a steady speed. On the other hand, you should not draw 250 ah out of a Pb battery as it will be destroyed in no time.

@brucesamuelson7541

4 жыл бұрын

I can compare the cost over time ratio however and for $300 my 2 Trojan T-125 6 volts are still running strong after 4 years of heavy daily use in my solar off grid RV! For the same price as the lithium batteries I will need to have I can use/ replace the lead acid ones for 16 years by my calculations!

@babylonfive

4 жыл бұрын

You can't compare a 300 to 600 cycle Pb battery to a 4000 cycle lithium-iron-phosphate. You would have to buy 10 sets of batteries in the same time that this battery just worked -- cost is only one aspect, as the inconvenience of regular replacements (such as in a powerwall or RV) has an indeterminate but high value!

you discount code don't work

@electronicsNmore

3 жыл бұрын

This should work Steve. Thanks for watching! SAVE5ENM

lead acid batteries have always lasted at least 10 years. my current 800ah bank is 13 years old .. I can buy lead acid for 1.2ah for one euro the lithium will cost me over 7 times more...

@electronicsNmore

3 жыл бұрын

Capacity definitely not what it was after 10 years.

@esasaarinen2423

3 жыл бұрын

@@electronicsNmore definitely not but lithium battery in my laptops typically last 4-5 year same for my smartphone.

You realize by using the load test on a freshly charged battery and showing people to do this you can cause an explosion

@electronicsNmore

3 жыл бұрын

LOL

Is that a Florida accent 😏 did you lose your pen in the last part of the video?

@electronicsNmore

3 жыл бұрын

Long Island, NY accent

Nice video... I'm American, so it's aluminum... lol

@electronicsNmore

4 жыл бұрын

I had to add that in, to prevent stupid/annoying comments. LOL

The problem is when a company offers products to test, these products are sorted and are typically the "best of the best". Performing tests like this should ALWAYS be performed at random and anonymously. This is no knock on the YTer but these results should NOT be considered "typical" off all products from this company. I NEVER trust test where the company offers products to test. I prefer the YTer to buy the product with their own money from Aliexpress, Amazon etc.

@electronicsNmore

3 жыл бұрын

Though it makes sense, you can still get screwed. You can only take so many precautions. I've seen companies make products that were good, then people say, "what a great product", then after they get recognition, they switch to different suppliers, switch to cheaper parts.

👍👍👍🍷🍷👍🦋🔊🔊🔊🔊🔊🔊🔊🔊🔊👍

@electronicsNmore

4 жыл бұрын

Thanks for watching!

Is this some sort of RIPOFF!! 179$ for a cell?? You can buy these from china for 82$ a piece grade A cells brand new, but not through these links

@electronicsNmore

3 жыл бұрын

You're not too bright. First of all it's now $111 per cell with FREE SHIPPING, not $179. Get your facts right before opening your mouth. f you think you're buying the exact same cell, then buy it. Amazing the stupidity I have to put up with. Prices have declined since the video was made.

pretty sure only americans call aluminium aluminum

@electronicsNmore

3 жыл бұрын

Pretty sure only Brits, Aussies, South Africans, and Kiwis complain how Americans pronounce the word. I sugeest they find more important things to discuss.

If the company test them before they leave the warehouse and they dont hold up its not exaggerated it is still lying !

@electronicsNmore

3 жыл бұрын

No guarantee that the quality will remain the same after the making of this video. They could change suppliers.

Boy cot Chinese products

@electronicsNmore

3 жыл бұрын

Good luck with that. Be prepared to spend much more money buying things, and that's if you can even find them in your country. I would prefer to buy from my own country, but many things you cannot get, or the prices are much higher.

if you don't speak murican English its pronounced Aluminium

@electronicsNmore

4 жыл бұрын

Be nice. 😀