DIY 48V LiFePO4 Battery for solar system
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- เผยแพร่เมื่อ 12 ก.ย. 2024
- hi, guy thank for your support. these few month i didn't post any videos cause my channel have some problem. i try to solve it but still can't so i will move this channel to an other one. please follow my new channel via link below:
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#BatteryEpisode
This is my DIY Solar Power battery project. this battery is LiFePO4 90Ah cell. i connect is in 16 series to make 48V battery system to store the energy that generated by solar panel system 1620W. the video is a little bit long cause i just wanna show you every part of my work, testing making case , bar, connect bms all complete part to make your own battery. hope you enjoy the video.
other related video is in link below
• Testing solar Panel(KH...
• DIY Cheap 12V Lifepo4 ...
• LiFePO4 90Ah Full Test
battery shop
bit.ly/2LwZesl
bms shop
bit.ly/35Wxqat
thank for watching
Stay tuned, there is more to come!
If you ever have to remove a cell from that pack, I would bet you will have to cut the metal frame you made to get one out since the pack will swell a bit over time. My suggestion would be to build the frame slightly oversize (maybe only 1/2") and place wooden shims in the gaps when the battery is new.
Wow! Excellent build - the battery cover, battery holder the bus bars and the cables took ages to make; They took ten times longer to make (at least) than making the actual battery - and this the case at all times!
Thank you for the detailed video. I will try and make similar battery in the neat future! 🙂
Really enjoyed, will work for so many jobs.
you should be very careful when using a metal frame for those cells, the outer aluminum shell is BONDED to the POSiTIVE terminal, meaning a MAJOR short circuit can occur. Please keep this in mind. Vibration can wear through that BLLUE vinyl decal covering.
thank you for you advice my friend, but this batter is use in place.
Mate you have made some fundamental mistakes here. Firstly The cells need air flow between .Use paddle pop sticks hot glued to one side . Three of them for those cells . If glued on one side only then you can easily separate a bad cell out without damaging others should the need arise.
Put it together then make compression sides for the ends and run threaded rod all the way through 4 corners at least . This saves the center of the cells from overheating and expansion .Double sided tape is not enough.
Ensure the bottoms of the cells which are negative cannot short to any ground underneath by using a piece of ply perhaps below the pack. Your frame all round is a threat there .It may well go negative and any positive connector can then short out if you start playing with BMS sense leads. I like you have covered the terminals to prevent accidental shorting.
yes sir that is the mistake. thank for your advice
Amazing work brother I really enjoy your video excellent work
It's awesome! I salute you Bro 🙂
On a glass table? Brave man.
Nice build! good job. Yes those inverters do have big capacitors inside, pant wetting moment when you connect one up the first time. Best to use a 10 ohm 25W resistor to precharge them. :)
Top Video 👍👍😊 Lifepo4 😊
Very nice build, I was wondering how is the battery performance and reliability. Can I rely on it for more than 10 years? What is the maximum life of these batteries according to your experience.
You can simply use a carbide blade for a chop saw for cutting your aluminum!
That is a beast of a battery! 👍👍
On the Avasva you can count on professional help with problems and technical support.
Right under that extremely thin blue plastic film is the battery cell which is positively charged, if it rubs against any kind of metal because the film becomes torn the battery will short out..So you don't want a metal enclosure touching the blue cells, ever..Might never be a problem, but I would never do that, you need an insulating material between the cells and metal..But to each his own..Very nice fabricating...
Nice design.... But you need to use your PPEs always.
Hello! Thank you so much for sharing it. I am going on the same way, building a battery bank to convert the engine of my boat to an electric motor. I was thinking on buying 16 of this as well, but creating 4 packs of 4 (12v each) and then connecting them to get the 48 v. Would that make sense?
Yes it is 100% work
Good job
What is that red tape?
Wow good
Sir yun isa nalagay mo sa positive double check 1 wire to bms to battery all connected to negative but 1 wire connected to positive?
is it ok if there is no active balancer? i never saw you installed one in this video.
I congratulate you for the video, I have a question those batteries for how long do you program your charger in the adsord method? how long do you leave it?
Battery bracket design was not good,better lower the upper side angle.
I am trying to decide between a build like you've put together here and one using 32650 cells like I saw on another YT channel called LithiumSolar. Do you have an opinion as to which design is best and why? I think I'm leaning toward a build like yours. Thanks.
is it possible to charge the battery via BMS? isn't the BMS only unidirectional?
Hello friend, fantastic video, thanks for this contribution. Your inverter is 48V DC. What would you do for an inverter that uses batteries with a range of 98V to 600V DC? Multiple BMS in series? Thanks.
Better check if there have BMS that would support the desire voltage first. Series BMS cost a lot of money.
47:43 why is all the bms wires on neg and one is on positive ( cell 6 from the right )
👍👍👍
I get a locked Daly BMS app, cause the app is saying it needs a Software Update, and all options are locked out. It says it needs a secure firmware upgrade code? Any idea?
I love how you make your own cable lugs. What kind of pipe are you using for that?
Pipe? what pipe?
@@kimtinal9353 i thought you are using some kind of pipe, cut it into pieces and then made your lug-crimps? What material ate you using?
Using a metal frame for prismatic cells is not a good idea unless you have lots of insulation between the batteries and the frame. A short circuit is very dangerous and can cause a fire.
do the 1kwh powerbank can run an window type AC of .750hp?
I dont know what was worse the music or the quality of work.
What happen with this inverter when bms disconnects the battery? Servicemens were reporting about exploding evrything inside : capacitors, diods, igbt, etc.
It doesn't make any sense for this issue. Diode and cap exploding in 2 ways over voltage and reverse polarity. If over voltage, how could it be, the inverter provides voltage to charge the battery, when bms cut off, the bus voltage will be at the maximum voltage it should handle this as well. If reverse polarity it should explode from the beginning.
@@kimtinal9353Line inductivity. When you brake a current of 100A, you get high overvoltage. They strictly advised not to cut the accumulator line when charging or supplying the load. I'v also purchased this inverter and bms, and still in doubt using them togethret, or not.
@@andreitatarinov3331 yes sir, this issue is already solved. Some inverter may cause bus voltage too high when the bms cut off. For China inverter its would appear fault code 8. But this error is only on the old firmware version. If you update the inverter firmware it will work perfectly. Only fault code no components broken.
Why didn't you install temperature sensors?
Cool
Sir, why is it 16units for 3.2 volts which total 51.2 Volts already and not 48volts, what is the purpose of an extra 1, instead of only 15units?
good question!!! the reason i choose 16S instead of 15S is about the minimum and maximum voltage of the inverter. in the inverter datasheet it said the maximum charge voltage can be set up to 58.4V and the minimum cut off voltage is 40V.
so if i choose 15S of 3.2V cell, that it discharge voltage is 2.5V and charge voltage is 3.65V, then you could fine the total max and min voltage of the whole battery by Vmin=15x2.5=37.5V it mean that you will never get power from your battery to its minimum state cause the inverter will cut off when the battery voltage reach 40V. if use 16S Vmin=16x2.5=40V so battery cut off and inverter cut off is the same. for 16S Vmax also could reach to 58.4V same as settable voltage of the inverter.
Hi Kim. Thank you for the video, very good. Why did you choose 48 V? Home voltage level is 230 V - one phase. Can you please share your e-mail and we can discuss more.
@47:25 why did you connect it to positive, when the rest were negative?
The small negative wire need to connect with the big negative wire. So it is the easy way to mount the bms on the wood frame after every positive are all connected
Hey Kim, how do you compare this MPP inverter with the Growatt SPF 5000 es? Which is better?
The inverter in this video is not MPP. No brand but a lot like MPP. this inverter could compare to SPF 5000TL HVM-P series. its function and specification are almost the same. the seller said this inverter brand MP not MPP. for my experience, this MP is much better then Growatt, Because it's have no problem working with my DIY LiFePO4 battery.
Possible to share the purchase link here ?
What is the bms model you are using?
What is the name of this bms ?
Can you send me a guide of all the connection please? 😊
👍👍👍😍😍😍
48v price
This video is everything you should NOT do:
Cutting without the grinder guard
Welding in a gardening glove and t-shirt
Drilling a small metal piece without securing it (especially in the first half, the rod used in the second half is okay, but a piece of wood under it wouldn't hurt to protect the drill press base)
The welder and kettle plugged in with non-functional grounding.
Please take more care and stay safe.
Cost???
About 970USD
What charger u use to charge that battery
Samry 5kW inverter with mppt charge controller
Oh look he's making some kind of box for compression, I hope he doesn't put the raw metal against the cells
.......wait is he making bus bars??
God can't save us anymore. No one can.
Sir can i use must inverter? Im using 400ah agm gel battery 8pcs 12v 200Ah with 4s2p connection.. Planning to change it to lifepo4 200ah 48v system?
You need to check the specifications of the charging and cut off voltage of the inverter first. Most Chinese brand inverter can be set. Because of lifepo4 and lead acid voltage is not the same.
how big battery can we build with 48v? I want to run all the electric in night time. let's say 15 hours and every day I use 17kw electric so I will need 11.4 kw of electric from solar system to get what I need. Can you please let me know what will be the battery bank size should be ok for me? Also can you send me your shop location?
No I think you have been mistaken to my comment, for 15 hours all I will need 17kwh of energy. So how big will be the battery bank. I also live in Phnom Penh now. So can you please advice me?
For you it's better to have two solar systems.
Each one with 5kW solar panel and 280Ah 48V battery (14,3kWh X 2 = 28,6kWh)
Hi, is your BMS a DALY ?
Not DALY, it has no brand, look a lot like DALY. from china
Is there import duty on the lifepo4 cells from China? If so, how much?
The shipping agency already included the duty, i don't know how much it was
What kind of inverter is this?
Can it also charge the battery?
Axel Gruber it’s mpp solar. And it can also charge. It’s a good all in one
Kim why are you doing all this work..
Just to make s battery, is it worth it?
Yes sir, it was ordered by my customer
@@kimtinal9353 okay pal good job!!
Thanks
What is the 16s battery dimensions?
For car
for solar home power system
Szép munka!
Szeretnék én is épiteni egy 24 v rendszert (8 db) kérdés mekkorra Bms kell ekkora rendszerhez hány Amperes?
Milyet ajánl?
@@kimtinal9353 Irtam !
@@SuperElbandi Sorry Mate, he can reply only in English
I need help to charge battery blk 82volt
electric vehicle battery?
ការច្នៃប្រឌិតប្រកបដោយបញ្ញា និងចំណេះដឹងធ្វើឱ្យយើង និងសង្គមជាតិរីកចម្រើន។ ខ្ញុំគាំទ្រ និងលើកទឹកចិត្តនូវសកម្មភាពរបស់បង
This is more than 50KG, and he is working on a glass table.
no sir, each cell weight 2 kg so 16 cells is about 32kg and plus frame and bms about 3kg so total weight is 35kg.
These are lithium, not lead acid. They're not really heavy.
I have a question. Is it a common port BMS?
Yes, it is
@@kimtinal9353 ok. Is it better to use common port bms where charging and discharging port is same?
@@faisalaziz7021 it depends on system that we use. This battery is used with 5kw all in one hybrid inverter that includes charge controller and inverter in one machine. For separate charge controller and inverter it's better to use separate port bms.
Too many adds hard to watch videos
ok my friend i will check this. thank for your comment
Metal is a bad idea ... if the blue plastic fail .. you'llhave a short.
What is the max charge for 48v
តើធ្វើលក់នៅម្ដុំណាដែរ?
ចង់ចេះណាស់
where's the solar panel connection.
you may check this videos
th-cam.com/video/OyM1mxSyZRo/w-d-xo.html
its not 3.2v cells ? 48v / 3.2 = 15 right ? should use 15 cells instead of 16 ? help me please
Sorry for late reply, the reason of 16 rather than 15 is about the inverter that we are going to use this battery with. We need to check the minimum and maximum charge of the inverter. My inverter cut off voltage is 40v and charging voltage is 58.4V. That why I choose 16 series.
Hello they said 16S is not ideal. I am doing research about this. I just bought a 16S BMS and 48V inverter. What do you think?
If 16s is not ideal, what is the better one? 4s x 4? I think it dosen't make any difference. But some friends of mine said if we use 4s x 4 to make 48v we can control if some cell is weak bms will cut off separately.
@@kimtinal9353 They said the ideal setup is 14S 52V. I bought a 16S BMS. I don't know cut-off or low voltage settings of the inverter. They said most inverters have a cut-off of 42V and that's why 14S 52V is ideal. 16S probably isn't wrong and I couldn't find 14S 52V BMS. Still looking.
Oh that's the point. Before i choose 16s i already check the inverter parameters that it would support or not . In my project, the inverter is MP 5000w China product. It can be set the cut off voltage max at 58.6v and min at 40V. This value is mach for 16s lifepo4. But some brand maybe have problem such as growatt spf 5000tl, it will appear fault code 8, bus voltage too high, if we use 16s bms. It need to update the inverter firmware to solve this issue.
The ideal 48v system is 14S only with li ion batteries because those are 3.6v or 3.7 volts nominal. He is using lifepo4 with a nominal voltage of 3.2 or 3.3 volts, so the ideal 48v is 16S . Cheers.
what else did you put to buy.
Solar panels
Hi can i ask what is that red wires for? You already put the bars to connect each cell in series. What about those red wire connected to each cells?
its for the bms. to maintain all individual cells with same voltage
Good video but it's another one of those videos where they add stupid music in the background. Drive you fkn insane.
Hahaha ok mate
ចង់ដឹងណាស់
ទំនងតើ ចង់ធ្វើតាមបង
Something is very bad in this build... There is only a thin blue sheet of plastic between the metal structure and each aluminium cells cases.... If those blue sheets wear... It's a short that will happen... And, you do not want that. Do not copy this, it's a bad... Bad... Idea
Luy man b