How To Make 12v 15Ah Lithium battery | DIY 12v Battery With 18650 

With all of the comments about unmatched cells and the BMS, I'm surprised no one has commented on the idea of soldering directly to the lithium cells.

Nice bro❤

Nic bro

Can this be used in Suzuki Activa Battery replacement?

Good 👍 job broo

This shows in great details how not to do it. Never solder. Do not use unbalanced en different batteries. But you fail to mention that you need a special charger. Do not use a car or ordinary charger. It is risking your life. People when you have no idea about the circuit you should NOT attempt to do this. The idea is great to use an old box but please rsalize that the battery is not compatible. I also do not see any temperature sensor. It is only good when you send it to Putin as a gift.

wleding on lithium cells and preparing pre welded nickel stripes are unsafe and losse a lot of time....now a spot welder cost is about 30 dollars.

Your video presentation is simple and good. Congratulations !! I'm a subscriber to your channel.

Can it be use as a replacement for UPS battery?

Big fan sir 😮

You just showed everybody how to wire up a BMS wrong 4.2 to 8.4 and the 8.4 position is wired to 4.2 I don't understand how you mess that up the BMS is designed so you fold over the nickel to the respective points

9:51 wrong bms connection, you connect the 4.2v to the 8.4v terminal, and then you connect the 8.4v to the 4.2v terminal.

is it useful to bike cb unicorn?

!!! Can this assembly be used with a 220V inverter?

Besser wie ein blei akku

Un-matched cells are NOT SAFE TO USE IN A PACK!

C’est nickel 👌

Brother, Greeting could be charge this device in solar panel??? please let me know???\

Cold solder joint .

Isko charge krne k lia konsa charger lage ga

Lack of knowledge but going to guide others. :v

Did you test the capacity? mAh of the cells?

Admin buat aki dari baterai langsung ada casnya biar kalo Soak biar di cas gimana caranya

30ah how much 2000mah battery cells use

How can I have this change ter

Udaya❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤

How to charge this battery?

👍👍👍🏆🏆🏆

Las baterías son de cuantos voltios cada una y ampage

Gehäuse 😊

You do a biggest mistake. You should use balanced bms for cell balancing

Das nenne mal ein accu Pack

Horrible idea to show all people your "skills" via internet... 1) not shown: testing of all cells of their capacity and internal resistance. 2) not shown: do all shown cells provide the same cell chemistry? This means, that all cells can support with same maximum discharge an charging current... Normally the cells provide a serial number printed on. So not only the dimension (18650) is the thing to be paid attention, more the less the numbers beneath chraracterize their chemistry and further their electrical characteristics. Also you mix all different coloured cells together - did u do so randomly? All the cells seems to be used cells.... 3) not shown: matching of cells. The best BMS can't help if one of the parallel cells is dying. 4) shown: soldering cells directly with soldering tin.... high temperatures (250-300°C) hurts cells. They should be spot-welded. 5) no temperature control/sensor or fuse is provided to the BMS or inside the battery pack. 6) no thermal prooved isolation tape is used to isolate the whole package. Only 5cm of Capten tape for BMS... 7) but not enough - the "sealed" battery pack is packed into a used and closed old battery container. No thermal airflow possible. Do you want to kill the pack when power-treated in your application? Last but not least: 8) Min. 10:13: you soldered the 8,2V BMS-point to the 4,1V bridge at the cells. This shows perfectly that you really know what you are doing. NOT!!! Also you do not tell people that this battery can replace a normal lead battery block. A lead battery can be charged up to 15V without being harmed. If you replace this in your vehicle with your DIY-battery you have to consider that the maximum charging voltage must not be higher that 12,6V. So every voltage regulator in your vehicle will shoot this battery! Wish u good luck and happy time - finding the error in this battery pack or when burning down in a Li-Ion fire. You are doing a good job - NOT to support the way going electric. It's your fault when newspapers are full of reports when electric vehicles are burning down...

Nicht mit dem Kleber

pls show the diagram

12v , ? Ah ...🤔

This BMS gives me a few problems, after the battery is charged 100%, the voltage output becomes 0.3v less than the battery voltage and when I connect it to a charger it doesn't charge, for it to start charging again I have to short the positive of bms with 0V of the battery giving 12.6v in output and it charges again, please help to fix this issue and this bms does not have a short circuit protection, the transistors will burst if you short the output

Por favor cómo se llama la pieza que le puso al lado de la batería por favor

Is that all cells are 2000 mah? If all cells are 2000 mah it means battery capacity is 14Ah not 15Ah

12v nhưng 1.5ah ok

What is the maximum instantaneous current that the package can supply at 12Vdc? Can you start a car engine in an emergency?

IED trainging video

Sir maine 20 ka BMS laga ke 2200 mh ke total 15 cell se 12 battery bana liya. Kiye yeh 20 ke BMS hain usse saare battery full charge hoga ya nahi? Please reply i am India from Assam State!

Bhaiya mujhe ap ke battery de shakte ho kya

You used 21 pieces of 18650 which go for about 5 euro a piece to "repair" a battery that costs 15 euros brand new. Maybe you can buy some chinese scam batteries which are 50/50 sawdust but it will still be too expensive.

I do not understand the BMS wire connection.

How much current & voltage for charging the battery ?

Bhai ye battery mujhe dedo

How to charge? Where is charging module?

Hi, isn't it a problem to use different cells in one package?

How to charge?

PIPI

Is it safe to do this mod i am concerned about fire

three different types of cells and he soldered that bitch with what looks like a 30w soldering iron. that's not a battery, more like a time delay bomb. he probably took all that from his job in some factory in India or china... like johnny cash. took it one piece at a time and it didn't cost me a dime. 👌👍

bro built a bomb....

Und was?

Boss saan ka po nakabili ng legit na lithium 3.7 na battery.maraming salamat po.god bless and follow na po kita and subscribe

Wrong bms wiring blast 😂😂

Vezi că bms-ul este conectat greșit!

Maximum?

Ye charge kaise hoga fir

actually, I just can't watch boring incompetency. bye frvr

you spend way 2 much time on the obvious/simple/repetitive. Painful 2 watch. I'll force myself to watch this vid to the end but I won't come back.

یہ بندہ بغیر کچھ بولے غلط وایرنگ کر رھا ھے۔۔۔ اپ کا نقصان کراے گا۔۔ پلیز اسکو فالو نہ کرین اور نہی ایسی بی ایم ایس وائرنگ۔۔. شکریہ

This is not 12v battery it's 11.1v and 12.6v fully charge. 12v battery is 12.8v and 14.6v fully charge.

Absolute amateur!!!!

بے کار محنت ہے ایسا کرنا: وجہ یہ ہے یہ پرانی بیٹریاں بیلنس نہیں ہوتی کسی کا کرنٹ کم کسی کا زیادہ ہوتا ہے۔ مثلًا اگر ایک بیٹری 1200mah کی ہے اور دوسری 1600mah کی ہے تو اس کو بیلنس بیٹری کہا نہیں جاتا۔ اور ان سب بیٹریوں میں سے جو کم mah والی بیٹری ہوگی وہ فوری طور پر یا ایک ہفتہ کے بعد dead ہوگی اور ساتھ دو یا چار دوسرے بیٹریاں بھی dead کرے گی۔ تو سارا محنت ضائع ہی سمجھ لو!

Which tape use to package

Can you use it in ups?

Brother, Greeting could be charge this device in solar panel??? please let me know???\