$493 Aliexpress 45Ah Grade A, YinLong Lithium Titanate (LTO) Cell Testing 

Update: The BLS store is giving me a full refund for the issues I experienced with their LTO cells. They said that they made a mistake and the cells were not labeled correctly. They wanted me to remove the video, and I refused. I told them that this will be a lesson to ensure that it never happens again. I still do not understand why these problems happen so often with battery distributors. This has happened on numerous occasions w/ multiple suppliers. Hopefully my video will teach the other companies a lesson. Previously, I did like the BLS store, and I have bought some really nice cells from them in the past. I am glad that I was ripped off before my viewers were. Who knows how many people they sent these cells to. If you bought these cells, test them and return them if necessary. ~~~~~~~~~~~~~~~~~~~~~~~~~~~ Does off-grid solar confuse you? Check out my DIY friendly website for solar system packages and product recommendations, and so much more! www.mobile-solarpower.com Join our DIY solar community! #1 largest solar forum on the internet for beginners and professionals alike: www.diysolarforum.com Check out my best-selling, beginner-friendly 12V off-grid solar book (affiliate link): amzn.to/2Aj4dX4 If DIY is not for you, but you love solar and need an offgrid system, check out Tesla Solar. Low prices and great warranty, and they can take your entire house offgrid with their new Powerwalls: ts.la/william57509 ~~~~~~~~~~~~~~~~~~~~~~~~~ My solar equipment recommendations (Constantly updated! Check here first): 12V/48V Lithium Batteries: www.mobile-solarpower.com/solar-batteries.html Solar System Component Directory: www.mobile-solarpower.com/solarcomponents.html Plug-N-Play Systems: www.mobile-solarpower.com/full-size-systems.html Complete 48V System Kits: www.mobile-solarpower.com/complete-48v-solar-kits.html DIY Friendly Air Conditioner/ Heat Pumps: www.mobile-solarpower.com/solar-friendly-air-conditioners.html Complete 48V System Blueprint: www.mobile-solarpower.com/48v-complete-system-blueprint.html ~~~~~~~~~~~~~~~~~~~~~~~~~~ My Favorite Online Stores for DIY Solar and Coupon Codes: -Current Connected: SOK, Victron and High Quality Components. Best prices and warranty around: currentconnected.com/?ref=wp -Signature Solar: Cheap Server Rack Batteries and Large Solar Panels: www.signaturesolar.com/?ref=h-cvbzfahsek -Ecoflow Delta Official Site: My favorite plug-n-play solar generator: us.ecoflow.com/?aff=7 -AmpereTime: Cheapest 12V batteries around: amperetime.com/products/ampere-time-12v-100ah-lithium-lifepo4-battery?ref=h-cvbzfahsek -Rich Solar: Mega site and cheaper prices than renogy! Check them out: richsolar.com/?ref=h-cvbzfahsek -Shop Solar Kits: Huge site with every solar kit you can imagine! Check it out: shopsolarkits.com/?ref=will-p -Battery Hookup: Cheap cell deals bit.ly/2mIxSqt 10% off code: diysolar -Watts 24/7: Best deals on all-in-one solar power systems, with customer support and distribution here in the USA: watts247.com/?wpam_id=3 ~~~~~~~~~~~~~~~~~~~~~~~~~~~ Contact Information: I am NOT available for personal solar system consult! If you wish to contact me, this is my direct email: williamprowsediysolar@gmail.com Join the forum at diysolarforum.com/ if you wish to hang out with myself and others and talk about solar FTC Disclosure Statement and Disclaimers: Every video includes some form of paid promotion or sponsorship. Some links on this youtube channel may be affiliate links. We may get paid if you buy something or take an action after clicking one of these. My videos are for educational purposes only. Information is subject to change/update at any time. Electricity is DANGEROUS and can kill. Be smart and use common sense :) DIY Solar Power with Will Prowse is a participant in the Amazon Services LLC Associates Program, An affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com

Will, your info is always so helpful and it takes a lot of the guess work out for us rookies. Much appreciated.

Thank you,! This technology is of great interest to me as I winter camp in northern Minnesota.

LTO is favoured for transport applications - like trains and light rail where regenerative braking gives high charge rates. And also the high cycle life is very important. But as you say, these are not requirements for solar.

glad to see you finally got a good battery tester. had that one for over a year now works great

Hello Will, there is an easy way to tighten the buss bars properly with no danger of damage to cell. first put a nut on the threads flush with the base of the cell, you do not need to put any torque on the nut. Then put a buss bar on, then add a second nut, when you want to tighten the buss bars, you use two wrenches and the inside nut is screwed to the outside (as if you wanted to take it off), and you tighten the outside nut, there will be no tension going into the cell, you are only locking the two nuts into the buss bar. In some cases, you may need thinner nuts.

Thank you for your work. We need more people/teachers like you in all industries. Keep it UP!

I'm glad you're back on line man!!!!👍😎

I think these cells would be great for campervan and van dwellers that live in their vehicles in winter, especially in cold places like Canada. Also, the safety factor in this specific case is a huge plus compared to other lithium chemistries. Keep up the good work, I am eager to see the cold temperature test!

If you have to jump thru hoops to buy grade A cells without getting ripped off I'd just skip the entire brand. It's that simple.

Will, you did it again, created a great succinct review of a battery technology. thank you!

Thank you for taking the time and working through proper troubleshooting progressions. It is a bummer they're grade B, and I'm looking forward to some grade A action!

Thank you, thank you. I have been wanting to order some of these cells but the curiosity vanished after watching your very reliable test.

I m so glad that someone like you are testing and exposing fraudulent battery suppliers. Thanks for the info...

Well done Will. Us beginners appreciate you knowledge

Great video as always. I suggest to use a 2nd nut to connect BMS wires etc. to assure full pressure is applied by the 1st nut towards cells and bars. Especially with thin and/ or soft cell connectors.

Also, calendar aging seems highly unlikely for these cells as most researchers on calendar aging agree that the cause of calendar aging is the graphite anode which isn't present in a lto battery

Like these videos especially LTO as an option doing a solar gate and currently it’s freezing out for the last 3 days. Thanks and have a nice day.

Sounds like a great solution for boats in northern climates, especially where the temps in winter go far below freezing and the boats are kept on the hard with no heating.

Great video! I'm following and I agree that most people will not have a use for these cells, but they are perfect for the Ice Fishing industry in Northern US / Canada. That is what I am using them for.

your videos are so usefull -thanks a lot and have a merry xmas and a happy new year

Sadly 90% of Ali's sellers are scammers, either they are selling B grade instead of A, or they are lying about actual capacity. Aliexpress is a basket of crabs. Thanks for all your test.

Thanks for sharing. I learn a LOT from your channel.

Great testing will happy holidays 😎😎😎

Thanks for the test will. Well done

I really wish you a happy holiday season Will. You have helped me to help so many women out here in the desert. Like I can not count all the solar installs and other DC power equipment I have put in for these ladies. I never charge but I get a great feeling helping others and gifting others solar panels and solar generators I've gotten on sale or been gifted. I'm really learning a lot on how to repair charging cables and making portable panels to charge Jackery's and other devices like that.

Yes I love your videos makes my day at work

Thanks for the video Will. I was board and looking at battery hook up web site and saw the prismatic lto cells. I haven't owned or worked with this kind of chemistry of lithium. I was impressed with the cycle life and that it might out last my life. I'm 49 years old. I wanted to learn more before I bought any of them. That's how I found your video. I noticed that you made it 5 years ago. Have you thought about making a new one with new information that you may have discovered or learned since then? Well I gotta go. Got solar pannel adjusting to do. I love your videos. Keep making more brother.

you do an incredible job! Brazilian greetings!!

Wow cheers Will was thinking of getting 16 for the RV - Back to Lifepo4 now

Another really interesting video Will, I have learned so much from your channel. Can you please do more videos on the all in one inverters? I'm having a nightmare problem with my Iconica, Now the supplier tells me the unit might not be suitable for my new lithium batteries! Gerrrrr.

Thank you for all the expertise that you share with us. Almost ready to buy these for a small start with photovoltaic solar panels. Can you please advise which batteries are best for 2x 180w photovoltaic panels?

Outland Solar had an advertisement on your page. Never heard of it, but it was an awesome commercial. Lol.

thank you will, another knowledge for me. :) God Bless

Great info. Thanks Will.

excellent video. superb explanations.

Great vid, really dig your testing methodology, etc. very thorough and great I go/explanations, I’m new to lithium, etc and want to be proficient in new battery tech, sub’n for sure.

Love your candor!

You nailed it by mentioning the fact Lifepo4 is the way to go atm as by the time good Lifepo4 cells have reached end of life, solid state battery’s will be available

That's wierd Will, I have the 40ah LTO grade B cells on my electric motorcycle pack and I've capacity checked them but still got the 40ah capacity. I've since swopped to 32650 6ah 3C lifepo4 cells. 332 of them lol. I'm falling in love with lifepo4. I mean if I can get up to 6000 cycles then that's perfect, even after that I'll still have 80% capacity. Also the reason there is so many grade B cells is because the Chinese use the LTO on applications and probably are required to swop them out after a certain time period, this is especially true for medical and public transport applications. Instead of throwing them out they sell it to us. That's my theory. Thanks for the vids!

Another great vid Will, have to agree with most of ur arguments as usual, space travel, satellites would probly be where these cells excel maybe. Also, what are ur thoughts about LTO &/or capacitors in series on the solar panel side of a conroller for a little extra power in partial shading and after sundown extra charging for that bit extra owner until the sun rises again. Cheers

I still go for lifepo4..im using cylindrical lifepo4 for my solar set up and i love its performance..

Many thanks for this upload. I been thinking about LTO, but now after your video I will keep my fingers away of this. As you said: Go on with the Lithium FE batteries and wait during their life time for new technology - or prices for Lithium FE batterys going down.

You’re too hard on yourself! You didn’t “mess up,” this was simply a false listing.

how do you get that graph with the voltage range? Is this software from the BMS? Thank you, love your videos.

Shoot. I really wanted them to work. Thanks for saving all of us the disappointment!!!!

Again thanks for the info Will. I truly hope that you succeed in your quest to get grade A cells before you start drawing social security.

Hey Will, Great video! I recently purchased the KiloVault 150 amp batter you review in a prior video for our '07 RV, and I was wonder. Do we need to install a DC to DC charger since the battery has it's own BMS, or can we simply use the Isolater Solenoid that's current in the RV? I was looking at the Victron Orion-Tr Smart Isolated DC-DC charger.

Thank you for sharing this👍👍

Another great Video, It's good you are here it test these for us. Once you finish your dispute with the company let us know the company, I'll rewatch the video to see it you did that. I know these test are a pain but it you could make them as close to real world test as possible that you be great. Assuming most of your viewer want these in a solar(off grid, maybe) set up.

Love these vids.

Thanks, really good video! Have you got hold of grade A cells yet?

Another thought I have on lto cells is even though their energy density is much less than nmc chemistry they can take one heck of a high C rate charge. Eventually I want to build a pack for a 50cc scooter converted to electric that I can go to DC fast charge sites and hopefully fill the pack in under 15 minutes.

Hi William, I love to watch your videos. I have dabbled in Hybrid Power Systems for over 10 years. During this video you down play the value of LTO high C rate. And for solar power, I agree. However, on a personal note, I have a Bad Boy Buggy, which is basically a souped up 4x4 Golf Cart. It has 8 each 6V 200A-H Pb Acid batteries in series and pulls 500 Amps. If I could get 100A-H of Li batteries that could handle 500 Amps at a reasonable price, I would switch over. In this case LiFePO4 cannot handle the C rate that I need. LTO is the only way to go. The limiting factor seems to be the BMS. The one you showed is good for 100 Amps. So, just a side note here, LiFePO4 cannot handle all applications. Keep up the good work.

Interested in building an LTO pack for long distance ebike touring because of the high charge rate. The ability to travel 45 miles, potentially get a full charge off of any standard household outlet in 20-30 minutes while having lunch, and proceed is very practical for that use. Will need to pull it in a trailer though because of size and weight . Thanks for the video .

Hey thanks so much for the great videos, I just discovered your channel and website. I was wondering what system you would suggest for someone who wants to get their whole house completely on solar without sacraficing any usage. I bought a solar power setup from Iron Edison this summer, I haven't had time to install it, but it's supposed to be a 1.5 kw 12v system, we shall see, but I had to compromise at the time and bought 2 200 Ah AGMs, but now after watching your channel I see how easy it is to build LIFEPO4 packs. I previously built a small 10 Ah pack, but the instructions I was following were iffy and I barely got the thing built, works great with a roll up panel I have. Anyway, so you suggest 48 v? And since I will most likely need more than 4800 w, do you suggest a different BMS? (I see on your website you don't suggest the BMS you like pat 4800 w). My plan is to slowly build out a system a bit at a time, add battery packs here and there. But I want to make sure the skeleton of the system is ready to handle the growth, I live in the country in Idaho and we are on the grid. The system I have currently does have a charge controller that is multi chemistry, including LiFPO4, and would barely be enough to power my home office, I do ham radio too. I would like to buy very durable long lasting components and buy backups o put away in case... Any help is appreciated.

I would like to see something about the use of a solor and wind hybrid system, Like the pros and cons of that type of system

Great job thank you for the video there is not too many people on RU-vid have your knowledge you know what I mean

Excellent presentation thank you

learning more about batteries :-)

My Yinlong LTO 40Ah has exact 1,236kg. Measured actual Cap. is 43,6Ah. Since 3 Year in use for Solarenergie. Twice I accidentally unloaded these cells to 0 volts for several days. Cells are still new, better than 40Ah. Great Cells. I have pay 15 Dollar for each cell in 2018, have 132 pieces.

Good job dude

Excellent video !

“Testing in freezing cold temperatures “.. That’s what I have been waiting for. Well done!

This is exactly why I trust you!!!

Always great reviews man! - Have you ever gone over lithium nickel cobalt aluminum oxide batteries? There's a new power station coming out using them called ElecHive Portable & Universal Super Power Station. Would love to get your opinion on if it's a good system. Cheers.

Not to change the subject, but I just ordered the Elechive universal power station EH 2200 watt . YOU REVIEWED a yetti AC200 which was awesome but I missed out on the sale, but this Elechive seems to be even better hope you can review it because your the best sincerely.

Nice, can you do a video on Sodium Ion batteries?

Hi Will, love your videos! What do you think about the "4pcs Lot LiFePO4 3.2V 280Ah Cells". I've been seeing them around on amazon and aliexpress and they seem like a great deal for a 12v 280ah system. Maybe too good of a deal.

Thanks for the info

Can you make a video on how set up and do a capacity test using a CBA4

Interesting video Will. Sad to see the batteries not pan out like they should have. Would have liked to have seen that cold temp test but as you said why bother with grade B batteries. There are things to learn here thanks for the video.

I was curious about the software and devices you use for testing cell and battery capacity. I can't seem to find them on your site.

I ordered a battle born 12v 100 amp hour lithium battery. I got the blue smart IP65 12/15 charger. I hope that will charge it. I'm new to this. Thank you for great videos.

Can't wait for your review of the Elechive by ZeroBreeze. It is a 24v system BTW.

You can very easily install them in series, and get a 24, 48, or 96V system. The current doesn't change on series connected batteries. For solar cells, if you use many, you can very easily upvolt the 12V output to 96V, which is much better for long power leads, before charging the pack. Maybe 100 amps isn't what you would use at 12V, but it's perfectly fine if your system is a larger system (like a solar farm) at 96V, or even 192V.

You didn't mess up. It was a learning experience. Battery companies are very misleading and that won't change any time soon unless people learn how to catch them.

Are these able to charge in cold weather? I haven't been able to find that out in any literature. Thank you for your battery tests.

The reason you can most likely just to get grade B is that Grade A normally do not sell in retail pack. Normally if you want to get a Grade A cells you need to contact the battery manufacturer directly, and in China there are many recycle battery and they put it on Online retail sales (as recycle one has greater margin). But if you are buying so small amount I don't think you can get much response from manufacturer LTO battery also has very little demand from the customer market, so it makes it even harder to get a good one

Have you ever reviewed the Jarrett gel batteries?

May I know the current setting of the DC power supply when you initially charge the cell for top balancing? thanks

excellent video and as usual no animals were harmed or injured in the making of this video

these would be great in my electric tractor project

what are those slim cells called that make up the blue block at end of video with the black tape around them, or are they the same titanate cells

I have only seen 40hr and 35hr Yinlog cells. I have a 120ah bank and I could not be happier. I am using them in a car audio application, but don't knock them yet.

You find a better supplier? I need to buy some of those testing tools you got before i get cells apparently. Im looking to run a 48v-120v electric motor outdoor in freezing temps. Think this chemistry is good or lifepo with a heater? Also do they have a decent bms for up to 120v?

People gave you a bad rep but atleast you did not bow down to appease them and did what you found what right. Good on your part.

Hi there, Firstly great video, Just to share, YL company itself does not officially sell on any E commerce platforms. I deal with YL directly( not distributors or resellers) and just got a batch of 45A cells. Glad you got your refund!

Could these be good for an Electric vehicle application temperature being a large problem. Small ATV,UTV. sitting out in the winter 0 or sub 0 whether. I like your reviews on solar, I am looking at solar and on farm transportation power. Thanks

I purchased your book last year but as of now what is the best power supply unit like jackery, veti, etc? Also what the best solar panels to date! 100 watt's. Thank you !!

Do you recommend a 2 port BMS that can switch the charge to a heater if the temp is below 0c? Where I live it's entirely possible that the cells will be freezing (perhaps down to -5c at worst) at first light when a solar system would start trying to charge.... maybe for 10 days a year, but it will definitely happen....

I'm thinking another possibility is they may be grade A cells rated for either 35 or 40ah but just marketed as 45ah cells

Have you ever considered using the titonate cells as a safety for the other lithium cells in your system? If you run the solar panels to the titonate cells and use them to keep the others topped off and warm? Just a thought.

Well done! Don't drop the old video (after reading your own comments)

What do you think about using 12vdc or HIV sound amplifiers in PV systems?

Finally I did not understand which cell should I buy for my solar setup.😯 Ying ling titanate or lifepo4.

Good vid 👍 Cheers

Hey Will! I have the same cells, and the data sheet says 2.9v charge. Which sounds too high for LTO. Did yours have a datasheet?

Hey Will, why did you go with aluminium bus bars this time instead of copper? I did some research and it seems aluminium bus bars dissipate heat better. I only ask because I have 2 meters of copper gas pipe here I'm planning on using as bus bars.

The Zenaji Aeon recently added to the Australian Battery Test Centre use these Yinlong. We'll see how long they last.