Campervan DIY battery build HUGE POWER!

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Lithium Titanate Oxide battery build
Around 9.5kWh capacity LTO chemistry
The battery pack was designed so I could have started off with 55cells (5kWh) and later expand it by slotting in upto an extra 44 cells at a later date (when I had more coin), I managed to come up with the coin for a full pack for the build.
Batteries seem solid, although I have seen occasional reports of these batteries venting online. I'm not sure if it was from abuse or design/manufacturing flaw. Will keep you updated with performance of these.
** am thinking about doing a group buy from a bulk distributor to get the cells at a discounted rate - let me know if interested**
(Update 28/10/20: I have had problems contacting a supplier that I purchased my batteries from. I managed to get hold of them today. The person I dealt with had left so my emails were going nowhere. If you are interested in a group buy for significant discount get in touch brendonsbuilds@gmail.com I will be going through the details of this with the supplier this week and will be in touch).
Affiliated aliexpress link: unfortunately the ali store I bought mine from has stopped selling these cells I have found a store with good reviews and linked below. (be aware that a lot of Aliexpress stores sell reject or low grade cells). Please let me know if you have any trouble with battery capacity from this seller, and make sure to apply for a refund.
s.click.aliexpress.com/e/_9wWCJp
Another store with good feedback - although they have only been operating 6 months or so. If you purchase from there please test cells and let me know if they are meeting capacity and obviously get a refund if not.
s.click.aliexpress.com/e/_AAoic5
Affiliated link to Internal resistance meter - needed to check cell internal resistance of cells before assembling pack. Will make a video on this.
s.click.aliexpress.com/e/_9fmV80
Part files: goes without saying... this is not a proven or tested battery pack design, little care, no responsibility.
BUSBAR as tested and shown in video made from 4.5mm thick ali machined - but could be laser cut. Clearances are tight so may have to be opened up if laser cut.
drive.google.com/file/d/1ErHT...
BUSBAR - slotted from either side, not built or tested. It has slots from either side so that any cell could be changed without having to pull the pack apart:
drive.google.com/file/d/1R0fM...
BUSBAR brackets, I machined these from Nylon - tho they could be printed (not recommended) have to be aware of creep in plastic on mounting points etc. All cutters are intended to have a 0.5mm corner radius on them to reduce the chance of splitting over time. This design is slightly modified from the video to make the brackets more rugged.
IGS file: drive.google.com/file/d/1GldL...
STL file: drive.google.com/file/d/1JEL3...
Music: Erik Lund - Tokyo Sunset

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Опубликовано:

15 июн 2024

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Комментарии : 2,8 тыс.

@wilfredstewart3348 3 года назад

A man after my own heart. I’ve owned 2 Unimogs, for beekeeping. Built lithium titanate battery banks and have only high school education. We are like brothers who have never met.

@brendontait6968 3 года назад

Whoa... 2 unimogs! Cheers.

@heartobefelt 3 года назад

@@brendontait6968 must have big feet and wide hips

@bobstovall5449 3 года назад

This was actually the very first of your videos that I've watched and I have to say your presentations are, without a doubt, the very best I've ever seen. For a high-school dropout, you seem to be rather well educated and articulate and master of an astonishing array of skills. By now, I've watched everything you've filmed and published on RU-vid and am eagerly looking forward to your next piece. Thank you.

@brendontait6968 3 года назад

Hey Bob... thanks so much for the comments and compliment.

@samhouston1673 3 года назад

You are not a drop out. You are a craftsman. What craftsmen have done for centuries.

@brendontait6968 3 года назад

I still dropped out, so technically am! It doesn't concern me in the slightest tho... am glad I did, and should have dropped out sooner! Cheers

@jameshupalo 3 года назад

The details were very nice, right down to the preferred bolts. Much appreciated.

@whatskraken9229 3 года назад

Thank you for explaining the importance of using watts vs amps for your power bank/ draw etc. It amazes me how many people are stuck on amps when there are many different power systems.

@brendontait6968 3 года назад

Hey, no problem, yeah I'm amazed too!

@eowendyl 3 года назад

Was heading to bed, came upon this video and saw "yet another battery build" - can watch later. Then you mentioned LTO and I just had to watch it right away. Really impressive build on a chemistry which isn't very well covered. I was even more impressed as I watched on that you did the tests and they actually came out to be 40+. Wasn't expecting that. Good stuff!

@brendontait6968 3 года назад

Hey, thanks for staying up! Glad you enjoyed

@kttatortots4293 3 года назад

I have no idea why your channel popped up, but I'm so glad it did, one of the beat videos I've seen regarding this kind of stuff. Was such a wonderful video to watch.

@brendontait6968 3 года назад

Hey Kenneth, I'm glad it popped up too! Appreciate it!

@Levi_Allen 3 года назад

I find coming back and watching the machining in this video to be therapeutic. Excited for your build!

@Levi_Allen 3 года назад

Have you decided to find a different battery load tester?

@brendontait6968 3 года назад

Hey Levi... hope you guys are well. Yeah I find watching the machine hypnotic, maybe I'll put some more in my videos. Thanks... yeah I have a few update videos to catch up on, but have been away for a decent trip in the truck and absolutely love it!

@brendontait6968 3 года назад

Yeah, but it took two more purchases to find one that kinda worked!

@Levi_Allen 3 года назад

@@brendontait6968 - what did you end up with? I’ve been trying to decide one for testing 18660’s and other small cells

@brendontait6968 3 года назад

18650s? I use the Opus BT-C3100 for smaller cells. Works well, they can crap out with heavy use. (I've put around 1,000 cells through one) else I've linked the current larger one that I use on my cold testing video.

@mattolsson8816 3 года назад

You are doing great work. Thank you for uploading these videos, I am learning new things.. Cheers!

@greatsouthernoverland 3 года назад

That was a great episode Brendon, thanks very much for sharing your research:D looking forward to more!

@brendontait6968 3 года назад

Thanks Vik, I enjoy doing things differently to how most people do. Not everything is going to work, but it's a good learning experience.

@GoCoyote 3 года назад

As an electrician, I appreciate your engineering skills. I do have a couple of suggestions: Best to use copper bus bars. If not, use tin coated aluminium bus bars. Aluminium oxide, which forms very quickly on bare aluminium, is very resistant to electrical current. The star washers you used may save your bus bars from melting by piercing through the oxide coating and providing a decent (not optimal) connection to the un-oxodized aluminium. Tin coated bus bars are protected from oxidation by the tin. The last option would be to sand the connection areas and use a non-oxidizing electrically conductive grease on the aluminium. This grease can be purchased through most electrical supply houses and many hardware stores. I would also use lockwashers on the studs along with nylock nuts (and no thread-lock compound, but anti-seize compound). When aluminum under compression connections is heated, it will ooze out of the connection. Then when the connection cools, it will contract, leaving a small space between the connection that allows oxides to form. Aluminium wire must be re-tightened every 5 years to accommodate this issue. Copper holds a memory of its shape and will expand back to its original shape instead of oozing out of the connection. The lock-washer will provide compressive force to the connection that will expand to prevent loosening over time, a must on all battery connections. Or better than that, use a bellville washer. It is used to make electrical connections. It is very slightly cone shaped and made of spring steel, so it provides the best expansive connection to make up for thermal expansion and contraction. But they are very expensive. I looked at building a similar system for my home, but went with used Tesla batteries for now. I would assemble them like so: Battery cell---Anti seize compound on stud--Stainless steel nylock nut---Stainless steel flat washer---No Ox grease---copper bussbar---No Ox grease---Stainless steel flat washer--bellville or stainless steel lockwasher---anti-seize compound on stud---then finally, a stainless steel nylock nut. I would use the same system for aluminium bus bars. The nut on both sides of the bus bar is to prevent the stud from putting tension on the cell. All my best to you and your system. You are very correct to look at cost per cycle instead of just cost per kw hour capacity. You will pay more up front, but a lot less in the long run.

@brendontait6968 3 года назад

Thanks for your comprehensive advice. I didn't use copper because it would likely have cost close to as much as the cells and then have many points of dissimilar metal contact. I appreciate ali can be problematic with the oxide layer. Each point of contact was lightly sanded and had a light coating of grease (not conductive - but have previously found non conductive grease works fairly well). Am hoping the relatively low currents through each connection will mean low stress and a lack of issue (optimism at it's finest). If for eg I'm pulling 3kW, it will be pulling around 15A through each cell connection. Cheers, let me know how your tesla system works out for you.

@leoncryp8182 3 года назад

What if he used standard copper pluming pipes 15mm diameter 1mm thick? flatten them with hammer = 23mm wide, 2mm thick, is that good enough? they are affordable , seen many people on YT make DIY Battery Terminals out of them, would it work for his applications? in fact I think maybe he could just retro fit his existing busbar (if this current system allows for 24mm length expansion), he just needs to buy 3-4 pipes at 5m long cost around NZ40 (USD28) each on trademe.co.nz

@GoCoyote 3 года назад

@@leoncryp8182 While it will work, it is not ideal. Copper pipe often uses a slightly different formula than typical copper bar and sheet stock used for electrical in order to maintain stiffness. The process of hammering out the copper tubing can also cause the copper to crystallize. This is the same as if you bend a copper (or steel) wire back and forth enough, the metal will eventually break due to crystallization. This crystallization also creates a very high resistance in the copper. This is why one is required to use stranded copper wire for flexible connections or power cords. I have seen solid conductor building wire catch fire from being misused as extension cord material. Seems like a lot of work, when you could buy the sheet copper online for not much more. The dangers of getting a battery system wrong can be catastrophic.

@leoncryp8182 3 года назад

@@GoCoyote Thanks for the insight, buying proper copper sheets sounds like the way to go, what if you had a small project and and some pipe lying around, burn copper with a touch? kind of annealing it or something, would that relax and soften up the crystal structures? seen people do that to bend copper and aluminium, heat then bend slightly, heat again and keep bending, gets very nice smooth bends

@GoCoyote 3 года назад

@@leoncryp8182 I apologize, but that is beyond the basic knowledge that I have. I often tell people that I have a lot of (hopefully) informed opinions, and hopefully, some facts. One my apprenticeship instructors told us that there is no way that we can memorize all of the information we need to know, as knowledge changes all the time. The thing we need to be able to do is know enough to be able to know that you don't know something, and that there are resources to give us that information.

@andinbriwel1092 3 года назад

"If you ARE stuck in the amp-hour mindset, change it..." 100% THANK YOU!

@graphenepixel8231 3 года назад

I agree with you.

@DANTHETUBEMAN 2 года назад

I would just design 25% over my needs and call it good with any battery

@chriskwakernaat2328 2 года назад

why? it's a good podcast..

@TheSwamppilot 3 года назад

Your analysis is the most complete and logical I have come across. Thank you, well done!

@brendontait6968 3 года назад

Thanks!

@fcbrants 3 года назад

Ha!! Starts video with, "yeah, no formal training, just muckin' about" - then builds the best engineered battery pack YT has seen, Then corrects misconceptions about LTO battery chemistry. Definitely subscribed, great video, thanks M8!!

@brendontait6968 3 года назад

haha, thanks Frank

@drcoolit 3 года назад

Just goes to show you that genius doesn't require a diploma.

@moonolyth 3 года назад

A Badge and Seals don't always comply with the best Tuna.. Nor Good taste. Sometimes you need to go to the dock where the stuff is pulled from the ocean kudos! Hah!!!

@jimviau327 3 года назад

Frank Brants , yes, the best argument showing how high school messes up your brain.

@JohnHoranzy 3 года назад

If he had a diploma he would be doing the same thing as everyone else!

@davidl6671 3 года назад

Both your practical and technical knowledge are impressive and more importantly to us all, Appreciated! Lost my Bro this year (60 years old), who was accepted to college at 15 and electrical and mechanical wiz. He was my go to for all things related (and truly would appreciated your knowledge and approach), we walked through more of this the past years plus, and appreciate those who (like you) post such information and support such a personal loss of go to knowledge. Thanks! Subscribing.

@brendontait6968 3 года назад

Cheers David. Sorry to hear about your bro 😞

@mickwolf1077 10 месяцев назад

Wow that Panasonic cell went from zero to spastic in no time. Never seen a reaction like that.

@notnotalwen4891 Месяц назад

Forbidden beyblade

@cccerberus777 3 года назад

Lots of good info, much appreciated. Especially the proper value of batteries as rated by power and cycle life.

@brendontait6968 3 года назад

Thanks - will deff try to get as much info into future videos as I can

@ChatGPT1111 3 года назад

Brendon, the type of guy that challenges the great Will Prowse and shows his calculations! Plus you add the structural components to make it a complete off-the-shelf package. Subbed!

@brendontait6968 3 года назад

Thanks Jim

@mjmnz 2 года назад

@@brendontait6968 Hi, great video, thanks for the clear explanation. I’m researching building a small, lightweight electric driven boat and these batteries look more attractive option than 18650’s for so many reasons. Way heavier than petrol of course but I’m sick of the fumes and noise. I live in Ōhope, BoP, NZ so I’m particularly interested in your supply and shipping costs and challenges. Following your link the shipping costs appear to be quite high. What was your experience? On the loctite front, I use the low strength version (222) for this type of application.

@brendontait6968 2 года назад

Thanks, yeah I was going to do 18650s for the truck, but after looking on some Facebook pages where I've never seen such a large collection of burned down houses in one place I decided to go a different route. Battery freight to NZ is an absolute punish. I still have some for sale if you want to buy from me, flick me a message on insta

@tvbela2023 3 месяца назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-iOBSxEqXUQc.html

@arnolambrechts2422 2 года назад

Holy crap, this guy is amazing! Workmanship and skills are out of this world. Much respect to you, Mr. Tait. Subscribed.

@brendontait6968 2 года назад

Thanks so much Amo

@rossmacquarrie6116 2 года назад

Outstanding video! Love that you dropped out of Hugh school and have still managed to educate yourself so well ;)

@numidian5191 3 года назад

Good job Brendon! Thanks for taking the effort to make this video, it was helpful. I am pondering a battery design for my boat to replace the generator. New Hampshire, USA.

@brendontait6968 3 года назад

Glad it was helpful!

@lorenzolanzianoerasmo6546 3 года назад

Can't wait to see what you've got to show us! Thank you very much for making this content.! I'd really like the solar power solution content you've mentioned. It's a jungle out there. You are really good at explaining things, i understand it with my electronics education from highschool. Thanks please keep them coming!

@brendontait6968 3 года назад

Cheers lorenzo

@jamareepitstock6150 2 года назад

That was a great explanation regarding the LTO battery chemistry. Very informative and fun to watch. I’ve been thinking of ways of making a similar battery pack (48V 22S) but using the LiShen LTO batteries. Your design was so simple, compact, symmetrical and used minimal parts. Excellent work!!

@brendontait6968 2 года назад

Thanks for that Jamaree

@davidmillard9472 3 года назад

Awesome LTO build, very informative with excellent mechanical considerations for battery cell, thanks for the info on RTE, I was a little concerned and hesitant after watching others!

@brendontait6968 3 года назад

Thanks David

@Whitney68w 3 года назад

Awesome video! I'm still years away from my LMTV build and this is great information!

@brendontait6968 3 года назад

Make a start - I'm just piecing it together bit at a time. Have no idea what will work and what won't yet

@VLifeAdventures 3 года назад

I thought I knew something about campervan batteries ... Until I watched this video. Brendon you set the bar high. Thanks for sharing this knowledge

@brendontait6968 3 года назад

Just scratching the surface, I'll go into more detail on diff batteries in future vids. Glad you took something from the vid =)

@briandavis9975 3 года назад

Well done brother and a brilliant build I'm super intrigued with this lithium chemistry and the way you went into detail on the cost, durability, life expectancy was well explained thank you I'm still learning and plan on building my own battery I also have a bus conversion with a 24 volt charging system and have also gone back and forth about 24 volt over 48 volt and with all said it is more cost effective to go with 48 volt because I've heard nothing bad about 48 volt systems and tons of DYI builders say I wish I would have gone with 48 volts that's good enough for me. Anyway thank you for a great video and look forward to more on your builds.

@johnbayfield7979 3 года назад

Very informative Brendon thank you. Trying to work out what to use in an offgrid battery for a house in the UK. Never really come across LTO before as most people I talk to are trying to sell me something and LiFePO4 is an easier sell/profit for them selling to people who aren't curious as to choices availible and long term efficeincy and cost.. If possible I prefer to either build whatever I can or at least fully understand how it works, so your video is just perfect. Simple explaination, easy to check up on what you are saying, so thank you. Education is what I do and I enjoyed being educated by your video.. Cheers

@maribelrios6562 3 года назад

You read my mind; background and qualifications! Yes. Thank you.

@mans4104 3 года назад

This is one of the best and well-thought battery packs I have seen.

@brendontait6968 3 года назад

Thanks for that!

@dig1035 2 года назад

Cool camper! Been watching you/LTO tech almost 2 years!

@groundcontrol6876 2 года назад

I saw the thumbnail and heavily considered ignoring it "just another electrical video of more of the same". I was dead wrong. You sir, are exceptional! I'm also an autodidact and everything I know, I've taught myself so I can relate with you and also, you have my respect. Those are some amazing fabricating/machining/electrical/planning skills you got there mate! Glad I clicked on this video, looking forward to seeing more content from you :) Edit: That battery array turned out absolutely beautifully.

@brendontait6968 2 года назад

Hey Andres, thanks so much for the compliment. Cheers

@tramptruck4859 3 года назад

Very interesting video, I like that you considered things like expansion etc. I'll be watching for more information especially on charging regimes and bms system.

@brendontait6968 3 года назад

Thanks, coming soon!

@propylaeen 3 года назад

Perfect length very good watch lots of reasonable information. Thank you for the great insight!

@brendontait6968 3 года назад

Thanks

@thylacine1962 2 года назад

Awesome construction. No BS just telling it as it is. Your honesty is so refreshing. Naturally I'm subscribing. Well done.

@brendontait6968 2 года назад

I appreciate that!

@nickush7512 3 года назад

Dude, what a pack, awsome, and one of the best, informative, educational and presented videos ever!! Very many thanks.... hitting the "all" bell was a no brainer...

@brendontait6968 3 года назад

Thanks Nick

@michaelfaber392 3 года назад

Really glad you showed that battery test fire!!

@websterbrauzer8373 3 года назад

That was awesome ... I had no idea it had that energy

@jacobweir4717 3 года назад

Got 1 minute in and knew I liked this guy... haven’t watched the whole Video yet but something tells me I’m gonna taking this advice. Some people, just have a flair for cutting through the bs. Hard to find these days! Cheers dude

@brendontait6968 3 года назад

Thanks Jacob... but this battery is kinda new to me so don't trust everything I say!

@kimkeam2094 3 года назад

Thanks for your hard work to build,test and prove use of this battery is possible. I will seriously consider making up a system for my home as the cost is far less than a Tesla unit and longer life. Kudos to you.

@brendontait6968 3 года назад

Thanks Kim, It was a big risk as I had previously not had experience with these cells. Am happy with how it is working

@ZsOtherBrother 2 года назад

This is one of the best videos on this subject that I've seen, good information, elegant design... I also recommend reading the description, which contains some complementary information and file links.

@brendontait6968 2 года назад

Thanks other brother. I need to get off my butt and make more!

@abrahamnorthhampton3327 3 года назад

Excellent rundown, and great project. Thank you for letting us in on the process

@brendontait6968 3 года назад

No worries!

@HeesooL 3 года назад

Great build. I have few of these cells and wondered about how I can package them together and you gave me some few great tips! In general in automotive application, LTOs are not so popular in most builds since kWh per Kg in power density is where these are far behind compared to other Lithium chemistries. I worked with these in City Buses where they may have a short range like 50-80km but have dual charging port to pump in as much amperage (8-10c) in for 5-10 minutes and go another 50-80km - it was pretty sweet to see them work. LTO (Altairnano/Yinlong) is an odd duck that has some interesting applications. They do degrade about 1% a year and also wants to be charged with high amps if you want to them to perform well. Share more about your experience with BMS and other related things. Thanks for sharing. Subscribed!

@brendontait6968 3 года назад

thanks!

@joyhe-HAKADI 10 месяцев назад

we can provide yinlong lto battery for you if you need

@HouseDadLife 2 года назад

I've been looking at incorporating this into my home backup instead of 12v lead acid. Cool use!

@johncaldicott1430 3 года назад

I loved the CNC machining, one of the best youtube videos I have watched, very well done, thanks

@brendontait6968 3 года назад

Glad you enjoyed it

@ITpanda 3 года назад

Never realized there where proper fireworks in my old laptops. Thanx!

@brendontait6968 3 года назад

No stress

@w0ttheh3ll 3 года назад

you're probably joking, but be aware that the fumes can be highly toxic and caustic to your lungs.

@ITpanda 3 года назад

@@w0ttheh3ll Would never intentionally overcharge or expose a battery. Hell, I turn in my prius bad cell for recycling after replacing the bad modules. Thank you for looking out for the less intelligent on the internet though.

@crpth1 2 года назад

My first and only, lithium battery explosion was some 8 or 10 years ago! On a homemade battery pack! It happened during charging! At that moment I had a cat in a transport box, not even a meter away! It came from the vet shortly before the episode. The transport box, literally saved the animal. Fortunately no physical injuries occur to the cat! But the poor thing was visibly shaken! By having several cells bursting/exploding into flames, in a rather spectacular way! Some parts of the cells hit the ceiling! :-o Also luckily when it happened I was quite close and could react very fast! Throwing the entire unit to the outer deck and into the snow! Which literally saved the house... In fact I had been most of the morning out. It would have been dramatic to say the least! Old wooden house (rented), with carpet floors and wallpaper! You get the picture! In spite of much washing and scrubbing, the wall always testimony the episode! ;-) NEVER underestimate the destruction power of a damaged battery! Cheers

@ITpanda 2 года назад

@@crpth1 Improper charging setup on cells without protection circuit?

@stevenpeck5949 2 года назад

I really like how you ended the presentation, telling us what you would have done differently. When I saw the RED thread lock, I cringed because of my own experience with the stuff. I have bolts break before it releases. I was thinking to protect from loosening due to vibration, Blue thread lock would do fine. Another issue is the use of aluminum because it does form an insulating oxide layer, but this can be avoided with the use of dielectric grease to minimize the available oxygen.

@donaldbird382 3 года назад

thanks for that excellent video bro....you're THE MAN when it comes to self built battery packs

@brendontait6968 3 года назад

Thanks Donald!

@adrianmullally5272 2 года назад

There may be no letters after your name but you are very smart and common sense you cant buy. This is truly one of the best no nonsense videos I have seen, extremely logical, and very well explained. Thanks so much I am definitely going to replicate your build. You are also a joy to listen to, looking forward to watching your other videos. Keep it going.

@brendontait6968 2 года назад

Cheers Adrian

@halidaymichael2899 3 года назад

Holy shit. You're frigging awesome. I'm in WLG, was just about to hit the buy now on Trademe for a 200AH Lithium. Problem for me is the safety, I've had experience of LiPo's catching fire in RC car builds... I'll email tonight.

@mazda2284 3 года назад

these are insanely safe !

@barrykruyssen 3 года назад

Awesome video Brendon. Well presented.

@fhqwgib Год назад

Amazing video and I love your theory/test/check approach. Those batteries sound great too!

@brendontait6968 Год назад

Thx

@somedavechannel 3 года назад

wow, very cool. I'm subscribing to keep up with the results of this.

@garethgibbins8082 3 года назад

Mate, there is a reason you have 'no formal training', you are simply self taught better than any university could do. Thankyou for the education you provide.

@brendontait6968 3 года назад

Cheers mate

@CD-vb9fi 3 года назад

bingo... same here... high school dropout, zero college, six figure salary. According to all the debt laden diploma's I should be flipping burgers if I am lucky. If a person wants to learn very little is going to prevent them. I have found my standards for education exceed that or formal education by a significant degree. I am never sending my children to those clowns!

@RappinIggyG 2 года назад

Cheers, Brendon. Really enjoyed that. Contemplating my sailboat repower and your informative, well-presented vid has helped me in that journey. Thank you!

@brendontait6968 2 года назад

Cheers, no problem

@debdoyle119 2 года назад

Great job. I had just finished watching Will’s video and then watched yours. Thanks

@brendontait6968 2 года назад

Thanks Deb, always good to see two perspectives right

@klausnielsen1537 3 года назад

I have only watched to 6:35 so far but I love how You have allready told me You have no prior qualifications and also demonstrated how your design is based on in depth understanding of physical and chemical properties of the subject matter. I feel like the World missed out when it did not give you a engineering grade and a research job! Wełl done M8.

@brendontait6968 3 года назад

Thanks... don't forget to watch the rest

@tanja8907 3 года назад

Great video thank you, every day is a school day 🤙🏼

@LeoNardo-gg5fn 7 месяцев назад

Good job Brendon ! Congratulations!

@flaplaya 2 года назад

Gorgeous use of this technology. As a schooled electrician I will assert the importance of proper dielectric grease whenever connecting anything aluminum to itself and or dissimilar metals especially tin plated copper lugs. I may have missed that step.. I saw lock tite. Very important especially with such enormous currents. Positive reinforcement awesome build.

@brendontait6968 2 года назад

Thanks, check around 8:20 where I apply a wipe of silicone grease to the terminals. Cheers

@He110World 3 года назад

The information in this channel is giving me an addiction. #invaluable.

@brendontait6968 3 года назад

So glad to hear this... thanks!

@CoolMusicToMyEars 3 года назад

I feel to measure the power then compliance voltage plays a massive part on the measurement accuracy, that's why some measurements at low voltage with say a current shunt & moving iron ammeter in the same circuit might give different readings due to compliance voltage & connection lead resistance, chart recorder to measure terminal voltage & current across a dc shunt with a fancy constant current load would be the answer there are proper units out there but expensive ! Compliance voltage is very important when trying to measure power or one can make mistakes say from a CT transformer using thin long leads to a moving iron meter, Yes very impressive metalwork, cost a massive amount of £$, I would have that sort of power in a brick shed, not in the bedroom for sure, always worried about fire risk, I rather have a purpose built brick shed or metal container, Those batteries are really like a super capacitor. Really nice engineering 👌

@SawtoothSam 3 года назад

Love your channel and presentation (and the warnings during 'testing' phase) ;-) Not difficult to see you are above average intellect and not afraid to go after what you believe in. Thanks for sharing!

@brendontait6968 3 года назад

Thanks Sam

@saolelejrsaolele7271 Год назад

@@brendontait6968 bro are u still in new Zealand?

@brendontait6968 Год назад

Yup yup

@scottflower6547 2 года назад

Thanks for being straight forward and to the point and adding no fluff.

@brendontait6968 2 года назад

Cheers Scott

@user-mt4zr5kp7h 3 года назад

Woah!! well now I have to go find batteries to puncture! That was amazing LOL

@Krzeszny95 3 года назад

you might as well stand next to a huge firecracker but you shouldn't

@ericparent7794 3 года назад

As someone who studied engineering in university, I am genuinely impressed with your knowledge of engineering principles (expansion/contraction, bending moments, and so on).

@jasongrinnell1986 3 года назад

Cause he just dropped out of school, not stupid. Society is so misleading.

@waiqiao6875 3 года назад

@@jasongrinnell1986 Most people who drop out don't have the time or energy to educate themselves to this degree, so it's still pretty surprising and interesting. Worth praising Mr. Tait for.

@ericparent7794 3 года назад

@@jasongrinnell1986 if my comment made it seem that I am of the opinion that drop outs are stupid, nothing is further from the truth. I dropped out of high school myself, because I was bored with high school classes and frustrated at the slow pace. I simply studied the prerequisites for structural engineering independently and wrote the entrance exam for mature student status. Also, intelligence is, in part, irrelevant in this case as one would still need to spend the time and energy to gain a reasonable comprehension of the aforementioned engineering principles.

@goinginsane37098 3 года назад

@@waiqiao6875 always depends on that persons passion

@brendontait6968 3 года назад

Thanks Eric

@davidmorin7939 3 года назад

Thank you for sharing some great content! Very informative..you sir, have the mind of an engineer! Wishing you peace and prosperity from Boston...

@notpletch3914 3 года назад

Keep up the killer work man this video was amazing! Thank you!

@brendontait6968 3 года назад

Cheers Brandon

@entune85 3 года назад

Holy Sh^T Someone is finally doing it! People have been waiting for this for a lonnnng time!

@brendontait6968 3 года назад

thanks! am into unique builds, learn so much more than just copying what everyone else does

@Wookey. 3 года назад

@@brendontait6968 A commendable attitude. Although sometimes other people have just worked out good solutions worth copying.

@williamlipscombii1565 3 года назад

That was great! It reminded me of a 4th of July "Ground Bloom Flower."

@gurgelplus 2 года назад

Exactly

@cosmicraysshotsintothelight 2 года назад

Sounded like one too. And it was constructed like one with how the hole made was just off center to the tube shape of the thing. Guaranteed that there was a lot more energy in that spray than there is in one of those cauliflower things. I did not know that they got that angry.

@owenparker6651 3 года назад

Now THAT was worth the price of admission. Thanks very much for sharing your knowledge!!

@brendontait6968 3 года назад

Cheers Owen

@cctsux 3 года назад

That was impressive and even better, you're right here in NZ. I prefer to use the smaller gauge soft fencing wire, which I don't think you can even buy these days, but chuck in a bit of number eight somewhere for that Kiwi feel and you'll have a winning combination (as if it needs it). Great work.

@brendontait6968 3 года назад

Thx mate

@graemehill1251 3 года назад

You can heat locative up with a soldering iron or some other heat source to make it pliable sos not to do damage to your batteries, neutral cure silicon is a good soft threadlocker , great post cheers for the info and your time :).

@pahhaw4251 3 года назад

that puncture test was impresssive!!

@brendontait6968 3 года назад

Right?!

@SniperTeamTango 2 года назад

That was incredibly detailed and I am very appreciative thank you very much

@bengrant4724 3 месяца назад

Wow, I really love that build.

@Thisisausername719 3 года назад

very informative, Thank you!

@brendontait6968 3 года назад

thanks for the comment

@catskillwoodgas 3 года назад

Thanks for covering this. It would be interesting to build a 48 volt pack

@brendontait6968 3 года назад

Might just do that

@tao4409 3 года назад

You built a gorgeous pack there. Very nice; a work of art. :)

@brendontait6968 3 года назад

Thanks 👍

@lone_puppy3539 2 года назад

Brilliant video man! Totally enjoyed your thorough run throughs.

@brendontait6968 2 года назад

Cheers

@duggydugg3937 3 года назад

what a powerhouse !

@historyisfake9153 3 года назад

I have watched more videos then you could imagine on here but this build was amazing mate.

@brendontait6968 3 года назад

Thanks!

@victoryfirst2878 3 года назад

I helped a friend with the same problem of rigid busbar. Use heavy equipment battery cables the are rectangular shape looking at them from the end view. They let expansion and contraction happen and really conduct so much better than aluminum. The copper is plated with tin also which helps with corrosion. Worked for he. Peace. VF

@drummerdoingstuff5020 2 года назад

Brilliant. Love discovering handy channels like this and you know when a guy just knows what the they’re talking about. I’d like to get some of those batteries and find some environmental ways of generating power.

@brendontait6968 2 года назад

Cheers Drummer, I'm the same. My intent is to go fully offgrid.

@CAPTAINBUCKETS99 2 года назад

Your home insurance company watching this video like 👀.

@Erin-Thor 2 года назад

I was expecting a DIY build, but wow! You have ALL the best equipment and the brains to make it work. Can I just bring my project to you and write a check? :)

@brendontait6968 2 года назад

Thanks Michael, I didn't use red locktite - I used an equiv to blue, but am still unsure. Have updated link. Thanks

@Erin-Thor 2 года назад

@@brendontait6968 - Michael? I think you responded to the wrong comment. 😎

@brendontait6968 2 года назад

Sorry Erin... I noticed something on my computer getting messed up after I commented on a few comments. I should have refreshed the page before I replied. Thanks for the comment btw. Unfortunately I'm quite time poor at the moment!

@Erin-Thor 2 года назад

@@brendontait6968 absolutely not a problem, it’s all good!

@unlost117 3 года назад

Yay, someone who knows what they are talking about....even tho you suggest you dont. You know ur stuff Brendon. Your electrical terms are all good wrt power, energy, capacity etc etc. Nice to see another vid on this technology with lots of info. I like your video on this. Well done man.

@brendontait6968 3 года назад

I appreciate that! I know a little about electrical stuff (possibly more than some other youtubers) but that is a pretty low bar to reach. I want to help people learn as much as possible, but at the same time I want to be realistic about my experience and ability because without doubt I'll make some errors along the way.

@tigertoo01 3 года назад

Bloody brilliant mate. It’s so vital to get different opinions from different you tubers. I was also turned off lithium titanate because of the efficiency but you are the first RU-vidr to prove otherwise. Great work!

@brendontait6968 3 года назад

Cheers tiger

@sergiobalcorta1915 2 года назад

I love how after punching the hole in that battery, he didnt talk about nearly shitting his pants.

@WillProwse 3 года назад

Yes I totally agree with everything stated in this video. And I pulled the same capacity results you got on my LTO part 2 video. The toshiba cells were incredible. The reason I still prefer LiFePO4 over LTO is due to cost mainly. LTO is amazing! But crazy expensive if you want grade A cells. The data sheets I found for my video must have been for higher c rates. Sorry about that. I like LTO more now, but man that pack you built is massive! How much did that cost you? holy cow! Yeah, ying long and toshiba seem to have the good stuff. But I must ask, why are you building such a massive battery with large discharge and charge capabilities? Why not use LiFePO4? I would love to hear your reasoning.

@Saleh.Al-Ghamdi 3 года назад

Good to see you interacting with others DIY battery guys will… i take it as a sign of humble & mission oriented - so in a good way let’s have a new test and sure the overall shouldn’t be costly like other types of batteries

@philipwilkie3239 3 года назад

Cheers Will. If you recall I was the annoying internet dude who challenged you in the comment thread at the time. I've since had the chance to actually test my own bank (24v 240AH) and it delivered exactly the same result Brendon obtained. I still think the confusion arose over poorly translated technical terms like 'discharge efficiency', which on the face of it is a meaningless term as there is no way to measure how many electrons are in the battery at the start of a discharge cycle. The only parameter that can be realistically measured is round trip coulombic efficiency, which is probably over 99%. Energy efficiency is different parameter again, and this is in the typical 95% range for all lithium chemistries. This largely relates to the slight difference between the terminal voltage on charge and discharge (at the same SoC). That plus the very high C rate you tested at only confounded matters more. Still it did compel me to think this issue through a lot more and I'm pleased we all learned something.

@ianpobanz12 3 года назад

@DIY Solar Power with Will Prowse He said he got them for around $50 apiece, so x99 cells, just shy of 5k

@paddy2661 3 года назад

@@ianpobanz12 $5k for 9 to 10kw that's worth it .$1k more than AGM with double usable power , plus big bounce 20,000 cycles , clear winner and safety.

@FGMOProducts 3 года назад

SO big hahaha

@seanfraser6981 2 года назад

Im currently researching battery banks for my houseboat and this is a very smart and very well desinged system super impressed

@brendontait6968 2 года назад

Thanks Sean, first attempt at battery too! Normally the first version of anything I make is terrible, but this has performed really well and not sure I'd change anything about the design if I were to build it again. Sometimes dumb luck plays a part in design!

@AndyUK-Corrival 3 года назад

Fascinating stuff. I am looking to change out AGM batteries on my boat and was tempted by Lithium but may look at these as another benefit would be fitting these in unusual spaces. Andy UK

@paulcunninghame7225 3 года назад

Great vid Brendon, good to have the build back on RU-vid. After your comments about being a high school dropout, I’ve got to ask what it is you do as a day job. Engineering, chemistry, electrical, fabrication? Landscaping ( the digger in the garden episode had me laughing out loud)?

@brendontait6968 3 года назад

Thanks Paul, I get that question a bit.... am self employed Jack of all trades, master of none... the digger is my toy for if I've had a bad day, I'll come home... dig a hole and feel better

@jupiteradventure5284 3 года назад

@@brendontait6968 you must have been a Labrador dog in a previous life then.......

@africanelectron751 3 года назад

For a highschool drop out you are doing some kick ass engineering!

@brendontait6968 3 года назад

Thanks - a lot more to come!

@markfisher8943 3 года назад

Schooling has zero to do with intelligence.

@shadesworks5369 3 года назад

@@markfisher8943 considering Einstein's third gr teacher said he was too slow to be in her class. His mum kept that stupid letter from him and taught him herself.✌️

@PortugalHolidayVillas 3 года назад

I miss home ... listening to you was cool... waiting patiently in Europe to come back 💓🤙🏼

@brendontait6968 3 года назад

Thx... tho a lot of people say they can't understand a word that I'm saying! Gotta say NZ is a good place to be in the world at the moment.

@ai4313 3 года назад

Thanks Brendon. Subscribed! Planning on going with the same Chemistry, just 48V and as a power-wall. Great video, keep 'm coming!

@brendontait6968 3 года назад

Thanks! Will do!

@heartobefelt 3 года назад

very interested to find out how they compare to a Tesla or LG Powerwall , atm in OZ the Tesla is around 20 year payback which is the same as never ~

@bullithedjames937 3 года назад

That looked awesome the battery dieing

@pasapucha 3 года назад

Cheers mate ! 🇳🇵

@Cardassiaprime 3 года назад

Awesome build Brendon and some good tech info. with 2 LTO's I could run my Ham radio portable all week-lol. Job Done- Well Done, Barnie.

@brendontait6968 3 года назад

Cheers Barnie

@jamesquigley8628 3 года назад

Now I'm aware of these batteries. It was my first knowledge of these. Be Well, J.Q.

@brendontait6968 3 года назад

Glad you picked up some knowledge

@MrButuz 3 года назад

Haha first I was amazed by the engineering that went in to your bank so clever, then I was thinking ooh camper van on the beach this guy is brave, then I saw it was a Unimog and hit Subscribe!!!

@brendontait6968 3 года назад

Haha, thanks! Unimogs deff have their appeal. To coin a phrase tho... owning a Unimog is a bit like having an erection and a migraine at the same time!