Amazon.com "Grade A" 310Ah -Ninthcit- LiFePO4 Cells Manually Balanced and Tested 

And get this, amazon is not paying for the return shipping. I've never had this issue before, and I stated that the product is defective. But Amazon did give me the address of this cell supplier's warehouse in los angeles so I will drive there myself and show them specifically how they screwed up and what they need to do to fix it. What a huge waste of time. I'll try to film the experience if I can. The warehouse is next to some other solar suppliers I know. Seems they all sit around and pump these cells out from the ports all day. Update: Hello, Dear buyer, we saw that you said there was a quality problem with the battery. Our colleagues will contact you for confirmation. We will refund you first. We will provide you with a prepaid return label after work. At present, we sell the new grade a battery of 280ah plus. Each battery has complete data and test report, Your return does not need to pay any return transportation expenses. Thank you! Best regards! Ninthcit customer service team Tommy Wang I just got an email from amazon stating that they are refunding the order. That is good. ~~~~~~~~~~~~~~~~~~~~~~~~~ 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

I can not thank you enough ... I've started to buy everything electric, mowers etc, bought an EGO set up with a solar charged battery pack system, which can also be used for 120 back up in my Mobile Home. Started watching your videos 3 months ago, you've taught me almost everything I now know about electricity, and I am a 64 year old Luddite. Even tho you really pushed the information on this video, I actually understood every word thanks to your concise tutorials.

Thank you for always being so forthright and honest with us, it is truly appreciated sir.

OMG the feeling he got when he found out it was 304Ah, the happines in his face it's just crazy to believe that sometimes we dream things that actually become real.

Will: "Don't do this at home, this is dangerous." No worries, Will. I have no idea what you are doing.

Thanks for sharing Will. I bought 16 grade A 280Ah cells from Shenzhen Basen and they were not bloated at all. I am about to get 108 of 310Ah cells now. I am having a second thought after watching your videos, whether I should stick with 280Ah. I agree with you, swelling is telling. How can a brand new cell be bloated like this? It’s not even practical to apply any pressure to these, since it’s hard to tell how they will behave after a couple of cycles. Last thing we need, is to damage the blue wrapping when they are compressed - BOOM! My guess is, they had to test these cells at very high C rates at the factory, although I might be wrong. But this is new, and someone saying that it’s natural for grade A 300Ah to look like this, it’s hard to believe. The SEI layer did not have a chance to form yet, it needs a couple of charge cycles first, right? I can’t complain about my 280Ah cells. They are not that far apart. Thanks,

I've bought some grade A EVE 280's from Shenzhen Qishou Technology... and while they were $106US each.. they were not bloated and pulled full capacity! :-)

Thank you for your input, it is appreciated. I've just ordered 2 battleborn 100 AH, I have only 1000 watt array, just ordered a watt 247 combiner box today and have a midnight solar classic. Your appreciation for these products encouraged me to purchase them. So once again thank you.

Great testing! And I agree they should not be swollen. Most people are buying LiFePO4 cells for long-term use and LFP batteries have great cycle life. Why overpay for grade B cells and get cheated out of cycles & capacity.

Will is living the dream, literally.

This channel is pure gold.

I have dreams like that myself. I was a technician in a Mainframe computer company back in the 70s and 80s. I was working on this system for days and could not figure out what was wrong. One night I had a dream which IC was the problem. I went into work the next day change that IC and the system started working.

Look at the last video of Andy from off-grid garage. He had ordered 304 Ah cells from a much better supplier and got actually 308 - 312 Ah out of each cell for about 110 USD per cell.

I have a strong feeling telling me that those cells are not gonna last for the advertised 3000 cycles, not even for half of them. Bloating and debloating will cause physical internal conductor fatigue and eventual breakdown. They will be gone way ahead of their time.

These cells are hit or miss. My first batch of 4 Supposed Catyl 320ah cells tested 295 and were perfectly flat when half charged and fully charged. My second batch of 4 arrived bloated but tested 321ah. They bloated more when top balanced to 3.58v. I've since restricted their expansion by about 50%. With no apparent problem. I used 1/4" aluminum plate and 4 threaded rods, 2 each side. The rods never get tight from expansion. If I think limiting expansion is better than allowing excessive internal movement. Why else would manufacturers reccomend compression? I'm sure it is because limiting expansion is good for the cells. That's my theory and I'm sticking to it! P.S. I'm charging only to 13.6(pack of 4) and discharging to 12 volts, expansion is much less this way, still getting 306ah.

Will, can you have a dream of the winning lottery numbers and share them with me?

monday starting strong! thanks Will

"What are the chances?" Well... you know you're aiming from 280 to 320 so 1 out of 40? 2.5% that's the chances, not negligeable! Especially since you know... you have experience so intuition and all :) But yeah good video aye, cheers for making it!

False advertising and/or defective if they can’t pull rated capacity. In either case you should not have to pay for return shipping. That’s a scam in my books !

When you're dreaming cell capacities… it may be time for a holiday. 😀

Everybody I know who has purchased (and received) cells at 300-320Ah have all said the cells they got, most were bloated to an extent, but none as bad as the one you showed. But, those who purchased the Eve 280Ah have said that they universally were nice and flat and always pulled more than 280Ah. So, for now, I would say 280Ah Eve are the way to go (not welded lugs though). They appear reliable and better made. If you look at the dimensions, something doesn't add up. Start with the Eve and do kWh per volume and per weight. The other brand 300-320Ah cells appear to have higher energy densities. Are they trying to squeeze too much in to the space, and cost cutting on the cell construction materials (thickness)?

A capacity test on that single cell would be interesting.

it's obvious those cells will not last long... there are some proper ways to just balanced those cells overnight. and after that it needs 3x charge/discharge cycle in low current. then you're done and ready to go for higher current application without damaging cell and it will increase performance.👍🏻 Thanks for the video 😊

Too Good To Be True: For the price, no company is going to spend 8 hours and the watts required to perform that test. They probably just charge them to capacity and push them out the door. Clearly, the low cell wouldn't pass that test.

Agree fully, theft is theft and people need to hold corporations accountable. It's amazing to me how much latitude, benefit of don't and blind forgiveness is given to corporate personage. Return it yes. Because you bought it on Amazon, the return should be "easy", but if not, file an A-Z Claim and Amazon will set things right. If Amazon fails to make things right, issue a Credit Card charge back against Amazon as they also need to be held accountable. Your customer review on Amazon would also help others who have yet to find your vids (and hopefully will, because of your review).

I've never heard of 'cell bloating' being a 'feature' of LFP cells. I'm calling bunkum on that. Imagine if the cells were in an ungiving enclosure - that's why pipes crack in winter. You say you paid relatively more but your argument still holds: you get what you pay for, and these, by your own admission, were 'a good deal'. Great video and what you're doing here for the community is admirable.

Just finally tested my 280ah cells off amazon which ive been using for the last 6 months and they actually pulled the full 3.5kw. i was so surprised being that they were slightly bulged.

Maybe 270-280ah is the sweet spot based on cell size and the limits of the aluminum sleeves versus bloating etc… battleborns new battery is 270ah . Going past that may get into more bloating , shortened life, based on current designs of the prismatic cells

I purchased 20 CATL 310Ah "Grade A" batteries from Alibaba which look exactly like these ones. Most had no swelling while a couple of them had slight swelling.

I’ve been subscribed and watching your channel for awhile. Always great info and product breakdown. I was hoping that in the near future(if possible and time allows) that you might do a video on how to set up a 24 volt system and then connect it to your homes electrical panel so that you could operate your entire home from the solar all in one 24 volt system. I’m building an off grid home and I’m confused on how to directly connect the solar power to an electrical breaker box so that you can easily just plug in your appliances directly to wall outlets or turn on lights from switches as if you’re tied directly to grid power. I understand I’ll need to wire home while building as if I’m doing conventional tie to grid power. Thank you so much for your help sir. Keep up the great content 🤙🏻 I’ve watched tons of RU-vid but I’ve yet to see anyone explain the process like you and no one has ever actually shown how to wire in for example a 24 volt Mpp solar all in one directly into an electrical fuse box in home so that you could easily just plug in your homes appliances to wall outlets as if tied directly to grid.

Always have same issues, we just make a pack with similar cells and got more swell after few days of charge and discharge.

When you stop to think how many cells fit into a 20 x 8 x 8 space it’s easy to see a couple companies sharing a container.decades ago now I sold carbon filters for water . The Home Depot pricing was about 12.00 I offered them on eBay for six dollars sold none . I raised the price to 9.25 sold like crazy perceived value. My bet the higher price guy sells more cells than the cheaper guy.

Thanks for sharing all your research Will! I'm saving up for a system like yours while I wait on a better house buying market. Solar is going up day one and I'm so exited!

"Will Prowse dreams of Amp hours" should be the name of the docu on him

What I used to top balance my cells was by burning off power from the highest voltage cell. I used a long spool of copper wire with a thinner piece of wire at the very end shorting out each side. It's nice being able to burn off 25 amps at a time from each cell

I don't know much but I've been looking into these types of cells to replace my Nissan Leaf G2 cells I got last year. I have seen a guy not compress them and they all were flat against each other till he charged them then they all bulged so I'd say some bloating is natural on these type of cells but you got a bad cell. Really appreciate the videos I learn a lot.

In China-speak, 310AH is the model number. I also wondered if they test with a different upper/lower cutoff limit. Drain it till it melts and yup you got 320.

Much as I like the LiFePO4 tests... I'm equally excited to see if Will can find a legit balancer.

I have been useing 280ah cells for over a year Not swelled , new or used New tested 289 They stay within .oo4 on every day charging I charge to 13.5v each , 2 batteries both run the over kill 120a hooked in parallel Cells are flat as can be , new n still I run a older camper , make a cpl pots of coffee n run power tools with this setup Every cell that iv had that pulls what stated is not swelled, seems if it's swelled they won't pull what should

This is a nicely "balanced" review 😋

I bought from this EXACT company via AliExpress, US shipp. 120ah for $440. I had some swelling as well. Compressed them and are now in my van.

Heya, yes my cell's are bolding aswell it's the chemistrie inside as fare as I untherstand

Love watching your videos. Even if it's not one that I really needed to watch. You make everything more interesting. Lol

Dont forget to place a review! for future buyers that they know to look out when buying!

I'd love to see the structure that holds these cells under compression in commercial EV applications. I wonder how complicated it would be to replicate.

well, Will ... let's just wait for the 'next' GREAT storage breakthrough, and start over.

China has 4 "A" grades. A++, A+, A, A-, then they drop to B grade, which is equivalent to F grade in the USA. China A=C grade. Look at the blue wrap on top, I can see on video those came out of energy storage, which was a common use for 302 cells.

Will Looking for the video you made about people going to the library not to read and learn but use the WI FI and China It was one of your best videos I have ever seen you make !

I would send it back for sure. All 4 cells

I bought 8 280ah cells from Aliexpress that were “grade A” cells. Six were swollen and one cell always charged faster than the others and it was an end cell as well. Not so sure it is not the BMS that isn’t the problem. Swap your end cell and check for yourself. With these BMS’ it seems to happen this way and I am not so sure if the BMS is having a negative effect on the end cell.

Great information. Thank you for proving out this test.

I paid about $100 each for 8x 280Ah so I was ok with the 246Ah they tested at.

Bloated cells are not appropriate or you'd find all "A" grade cells were bloated! 🤔

I just got 8 grade a eve 280ah cells. They were not really swollen but I have a weak cell. Probably a few ah short of 280 ah. Overall still impressed with my batch (1500$ shipped)

Am certain your assessment is correct... Manual top-balanced only three of four cells? The one not balanced was the bad cell? Coincidence? Procedure might be uniform for all four cells? 2) There's a difference between cells connected to power-supply and disconnected, especially after a few minutes to settle. 3) Those automatic-balancers seem unreliable, especially on end cells? 4) Maybe move the bad cell into middle and rebalance? (more...) 5) Voltage isn't a great way to balance, especially at the top-end of charge-state. Unfortunately, the only better way might be to run full discharge curves on each cell individually and overlay the curves? See what each cell's total capacity? Measure possible differences in top-end voltages vs total capacity? Not recommending it, because it's a lot of work and unlikely to answer the question, just something to think about? 6) Comment about first-cell being first to under-voltage is a poor-man's way of estimating capacity and may well prove the first cell is bad. However, cells at the ends-of-stacks often exhibit anomalies (e.g. lead-acid ends-of-stack cells often require more water?)? Easy enough to swap cell-1 into the middle (as suggested in #4 above)? 7) Not sure how disconnected the load is? Is there backward diode leakage? Best to just disconnect it during manual balancing, just to be sure? 8) Even if somewhat unreliable, auto-balancer anomalies support both #6 and #7 possibilities?

It is grade "A".....A.. Hole Company..great work bro....

You should squeeze bloated cells with your hands. If they are solid, an oversize jelly roll inside is pushing back on you. If they give slightly, only then suspect internal decomposition gasses. Alternatively, you should not buy such large cells. LiFePO4 cells are made by spraying graphite and LiFePO4 powders suspended in a volatile solvent onto miles of aluminum and copper foils. After the solvent evaporates, the coated foils are rolled and compressed into the jelly roll. You can't perfectly control the layer thickness over hundreds of linear feet with this process, so some cells naturally are thicker than their cell design size and bulge. Lower capacity cells are less subject to being oversize since they have fewer linear feet in them, thus, sprayed film thickness variation is smaller as a percentage of the constant thicknesses parts of the cell, such as the metal foils, ion transfer membrane, and aluminum cell walls. While I agree that overrating cell capacity sucks, I think your rant about lazy, fat Americans complaining about stuff applies here. US companies do not make LiFePO4 cells, so you should be thankful that China still does and is willing to ship them to the US. Since it is standard practice in China to overrate their batteries, it is your expectation that is wrong and if you don't like it, you should start a company that manufactures LiFePO4 cells in Las Vegas. I need. Mine from China are taking way too many months to arrive. I'm not even sure that they've even shipped given how awful the sea shipping industry is backlogged.

Will, I was wondering if the bulge is caused by the heat of the container that it was shipped out of. In Vegas it’s pretty hot setting inside those trucks, could that be the cause?

If the price looks too good, then you end up pay twice or more. Thanx for the videos 1luv

Please publish who you return to and if they are working with you and providing service

When are you going to review the ecoflow delta pro ?

Will, can you do a video for disposal and recycling of lithium ion batteries?

What a bummer you would think being a US distributor they would be what you expected and free of defects. I think you should start a distributorship at least we would know we were buying from an honest company. "Amped Up" would be a good name :P

If the batteries aren't hitting their rating, even if it slightly low, then they should be considered bad and be returned. We need to fight back against this false advertising.

I'd be curious to see what the 3 good cells do, not that it helps you... But interesting to know if those 3 hit 310 or still fall short.

Dude you have saved me so much time and money because of your reviews and this channel....when the pandemic is over you should try to go to China and get a tour of the facilities that make these batteries....I think that would be so interesting.

Bloated is not normal - they can expand and contract for about 0.5mm to 1mm or so between low and high state of charge, but not bloat like that.

HOWdy W-P, ... Thanks for the DATA & REVIEWS COOP the WiSeNhEiMeR from Richmond, INDIANA ...

LOL. Will your dreams come true! Congratulations 👏

LiFe shouldnt really swell because Lift (Lithium Metal Ferride) is a fairly hard substance unlike Lithium Polymer which is gell like in its formulation of electrolite.

Thanx for all the great videos and tutorials.

Thanks for the honesty will, as always :)

The lies about capacity don't bother me as much as the swelling. I would be concerned about how long a swollen cell will actually last.

From my understanding from supplier, there's no grade A cells sell on the market because grade A cells are used for EV, only those grade A cells which fail to comply to the EV specs will rejected and sell on the market. All this cells called Grade A- cell and Grade B cells. Correct me if I am wrong.

I had a dream that I watched this video in which you had a dream. There was a spinning top involved.

hi will,can you make a video about ac and dc protective devices?,😁🤗☺️

I had these but one of the terminals broke off when I was putting a nut on, not tight I got no response form the Amazon seller. I didn't want to return it b/c I have waited so long for batteries.

Thanks Will

These are probably someone that bought the same batteries from ail express that you bought and now selling them on Amazon to try and make a profit

You kick ASS, in every way!!!

So how do you charge your Tesla? Straight from the battery or it from the inverter? Im looking for a solution that I could charge my Tesla's with DC power FAST charge or supercharge it at home.

The never ending search for Grade A batteries at Grade B Prices. I remember in my youth it was finding Chinese and Russian Tubes that could handle the same power as American made Eimac Tubes. Even when we found the a cheap tube that actually delivered the same power to the amplifier as the Eimact, it would fail in a year or two as opposed to the Eimac made tube that would last 20 years.

Nice Sunpower panels! @ 3:28

My 280ah grade A cells were not bloated so I don't see why some 302ah cells are bloated. I don't mind some bloating if I paid cheap prices for grade b cells. It's when you pay top price for grade a cells that is annoying.

Great content as always. I don't remember you testing pouch cells. I believe they're cheapest option to buy, but need some work to make decent pack. You could check those some day as well. Thanks!

I want to buy these cells, lot of people are using these cell and I'm on my 18650's ;)

Hey Will, buy a few sheets of 1/4"+ poly off eBay and cover those shelves...

Can you please a video On half cut cells panels vs standard cell panel

I suppose what you really need for grade B cells especially is a programmable BMS to stop the BMS trying the impossible task. Just set it to a slightly less battery capacity or lower the cell voltages to the lowest cell maximum voltage after charging them and letting them settle. That's the reason for being able to adjust cell parameters, I would guess.

I have some 100ah Vericore cell that I bought from China with a similar issue. So the cell that reach 3.6 first is the bad cell? Good to know. Now I have to find out why. Most supplier only sell cells in sets. Too bad I can't just get a replacement for that 1 cell.

This pack is problematic with a weak cell. That cell equalizer board will not keep up with high charge currents and will over voltage cell(s) at high currents. I have had this problem with LTO and the same board. I don't have a solution to this high charge current problem. My hope was to high current charge low AH LTO cells to offset the weigh of the cells. The theory is who cares about capacity if you can charge your cells super fast. It works but over time the cells go out of balance. I have better cells that should do high current properly. I will test this winter. Your cells don't look matched.

Even when your sleeping your working!!!! Lol... Take a break.

Thanks for the video Will. So do you think it's better to buy the 280 amp hour cells from Alibaba and if so which distributor would you go with. Again thank you for your time.

I am confused. A battleborn battery is rated at 100AH. These are rated at ~300ah and equal about the same size. Can someone help me understand this?

As you were unboxing I thought you had ordered a Model 3 SR+ “build yourself” kit MIC

Love from Bangladesh

time to contact the manufacture about swelling

Hi! I have 32 LiFePo4 cells and I want to build 48V battery - but I don't know how to connect everythig...Maybe You know some site with wiring diagrams? Thx a lot!

yo will, can you suggest me some grade A cell supplier? thanks alot

I'm kind of spooked about taking bulging blue batteries in a house and putting them to work.