Spec battery is 16v 4s 3,400 mah x 2 = 4s 6,800 mah not 3.7v 27,200 mah

@icraftcrafts8685

Жыл бұрын

that's correct, but unfortunately they are marketed like this as well. to be fair, if you added a buck converter and made it a 5v usb output, it would be close to 27000 maH

@oliesangabriel5728

Жыл бұрын

how many mah if im using 12v 3s3p 3200mah cells 40a bms? how do i compute?

@bebievillaflor

Жыл бұрын

using 3.7 battery in 3s u got 12v, now in 3p with 3200mah u got 9600mah or 9.6ah,thats the capacity of your battery,now bms is just a battery management system making the battry to be balance ..

So satisfying to watch I recycle any LI battery I can find. Seriously many dead packs just has a bad bms the batteries can be saved! I have packs for everything from trolling motor to emergency lights. Finding good BMS can be tricky amongst the sea of junk or you can run the same leads and just manually charge with a hobby charger it balances in some cases better. Can solder fuse wire to form the series. This video is the ideal way using great cells just saying you can skip the bms and spot welder. Just have to watch batteries or add a low voltage cut off. I have had great luck using hobby chargers skipping the bms. They have a storage charge which can extend the batteries as well as a load test and a load balance. More hands on but I like that!

Great video…but you could have finished it off with the charging cords and or output cords. Maybe some blue shrink wrap 👍

My e-bike is 60v, 5x12v20ah batteries. Inside the case there are 6 compartments about 21x60mm. When in 'run' mode, it is 12v x 5 = engine voltage. When an 3.2v cell is used, the charging voltage for a 60v sla battery is used 5x12.8v The rated capacity should be higher just because it is 4 cells rather than 3. I found this worth mentioning as a vid I recently watched has a 12V20ah (sla case version) having 3 cells at 3.7v while the motor/controller of a 500watt motor prefer the lower voltage when 12V is 4x3.2v cells. 54V charge 52V run 48V cut-off 64V charge 62V run 48V shutdown In my 'case' the straps for the lower side would also act as a cradle as it has to go over the plastic divider. The motor's capacitors are 'refreshed' by a 60V sla battery pack. Being connected in a series (12x4=48v, 12x5=60v,12x6=72v, 12x7=84v hub motor/speed controller) would seem to make it a continuation of what the 8 individual cells begin. 10ga wire between the cases, 6"long. The sla batteries work, they also require 'a lot' of upkeep and they do end up dying, most from being frozen. The case is durable and 12v is a 'safe limit' for 'the basement'. Drop in some 'updated items', seal the case and enjoy the maintaince free sla batteries for years to come. Come winter that is.

I dont think you should connect those cable to the batteries, thats for balance charge i think... You must connect batteries to the B1, B2, etc terminal with those nickel strip to able handle large current (30A to the spec of bms).. those cable you connect arent able, thats why its for balance charger like imax, etc 👍

@martinwhite418

2 жыл бұрын

Audy, Did you ever come to the conclusion that you are correct? It looks to me like your are correct. Thank you.

@martinwhite418

2 жыл бұрын

@Reno Simpson Can you please correct the mistakes so we can figure out what your saying? Thank you.

Very good work and cool looking

Qual FONTE (e tensão) você usa para carregar um pack desse 4S1P (16.8v), mestre? Se entendi bem, o LM2596 precisa que a fonte de entrada seja SUPERIOR em tensão, dessa forma para um pack desse fica mais difícil achar fontes né, as de notebook são bem mais caras. Se tiver uma alternativa mais em conta, me dê uma sugestão por gentileza?! =/

wow very nice,,watching from philipines,,shout out sir lucban electronics

Nice. Can I use it for self start Honda Activa?

Sir this is very aamzing

Will those wires be able to withstand 30amps

You should correct the title of this video. Its not a 27,200mah pack, its 6,800mah. 4S2P

Whats the name of the plug do u used in bms

bro mere pas 3 different types mah ki 18650 batteries h kiya mai power pack bana sakta hon with bms?

what is the use of this pack?

How many maximum V and Ah are required for this 4S BMS changing the battery?

Super 👍

Spot welding is like stapler

It's an interesting video. I wonder what you think of this combination of electrical equipment assembly.

Could you run a car stereo off of this?

Kya ise loom solar charger se charge kar sakate hai please bataye

Where are the Out put leads ?

6800 mAh capacity, max. discharge current just less than 10 A (4.875 A per battery x 2)

en Ufak kısa devrede kartımız yanacakmi? kısa devre koruması nasıl yaparız?

Very Good

Heya I loved the video man 👍 I have a question regarding my 4s BMS, I just installed one for my 4s 4p battery and I got 16.40 volts out of the BMS which is good but whenever I plug my battery to a load the battery immediately drops to 11.16 volts and but it drops to 4.8 volts when I start using the load with the battery. Can you tell me what's causing this? The BMS and battery cells are brand new.

@franciscorgq8502

2 жыл бұрын

Hello: What I can assume is that the cells are of very poor quality, possibly Chinese with large mAh numbers, they are fake. If this is the case, use Japanese cells that have high discharge capacity and are unprotected. The protection in this app gets in the way as it limits the download. I suggest you like the 3400 mAh NCR18650B, without protection, they are more expensive but well worth it. Greetings.

@MrStyle-sr1yv

2 жыл бұрын

you didnt connect the battery plus and minus thick cables..he didnt complete the pack in the right way...b+ and b- need to connected to the battteries with thick cable or strip.

@dentaldirekto1433

2 жыл бұрын

Did you try to charge the Batteries or more importanlty to connect the BMS to a charger? The BMS comes locked sometimes (like if there is short circuit for instance) and it needs to be connected to the charger to unlock itself. Mine 3S3P Pack was not working and giving me lower Voltage output (11.3V instead of 12.8V). The batteries were already charged when I assembled the pack so I didnt feel the need to connect it to the charger.... big mistake, I had to spend hours trying to trouble shoot it, I even disoldered everything and soldered twice to the same BMS board and to a new one.... When I was practically giving up I decided to connect the pack to the charger just for the heck of it... it did the trick and It has been working fine since then. ohhh mine....

Ohhhhh nice 👍

I must build this

Leads from the bms should all be the same length and this 2p4s battery is never going to hit 30ah. Cells should also have near equal charge prior to assembly.

Very skilled and thanks for sharing .

Which charger I charge

That battery is TINY. I am building an e-bike battery with a power of 252 Wh (14.4V 17.5Ah) with 28 cells of 2,500 mAh each. Granted, you're using higher capacity cells, but in a 4S2P package. My e-bike battery is gonna be 4S7P. 27,200 mAh would require a battery that has 13,600 mAh each. Impossible in 18650, 21700 or bigger battery sizes! Possible with g huge LiFePO4 cells, but those have different voltages. There are 100Ah LiFePO4 cells for example.

@stinkycheese804

Ай бұрын

You're being silly. You'd simply use more parallel series of cells. It is not a tiny battery at all, normal size for whatever a purpose is.

Gan saya punya banyak batre bekas laptop, di cek masih bagus sebahagian tapi gak ada tulisan 18650 apa bisa pake BMS di rangkai seperti itu ??

Nice

Super

❤❤❤ I also want a battery for the stroller

Thank you for this video i will make it instead 18650, i use cellphone battery.😁

please have the plan

On title its written 27ah. But you show only 7.8 ah !!! Very strange. Plz correct your thumbnail.

@LahisTechLT

3 жыл бұрын

Where I showed 7.8ah? These 1cell has capacity of 3.4ah each. This BMS could handle upto 30A of load.

@ramsharma4755

3 жыл бұрын

@@LahisTechLT i think you calculation is wrong....if 1 cell has 3.4ah capacity then ......battery pack has 6.8 ah capacity only

@manza12298

3 жыл бұрын

27 ah????

@facebookmarketplace8856

3 жыл бұрын

@@LahisTechLT 4 cells make 16.8v or 4s connection. That 4 cell only provide 3.4 AH. Not 13.6 AH. Its very common calculation. You should check Google for this. How to calculate battery AH.

@LahisTechLT

3 жыл бұрын

​@@facebookmarketplace8856 (Made a mistake; I multiply the Amps as well to make 6.8Ah x4 = 27Ah) so the correction; Nominal Voltage of this battery is 3.6V. So, 3.6 X4 = 14.4V nominal. Per cell = 3.4Ah As it's in parallel 3.4Ah x2 = 6.8Ah.

I'm trying to make a 12v lithium battery Can I use a 24v bms ???

@stinkycheese804

Ай бұрын

no

can i use 12v charger for this?

@chilly1661

Жыл бұрын

no....

Sir I gonna make like that then I search yt then I find you but I gonna make is only 4s

I understand the 4s configuration but why do you title this like 27.000mAh?

BRO YOU FORGOT TO CONNECT THE B+ AND B- TO THE BATTERIES WITH THICK CABLE.

at what value will the cutoff ? 12 v ?

@imnotbeluga007

Жыл бұрын

3V is a good cutoff voltage for Lithium batteries, which adds up to exactly 12V. You can discharge batteries down to 2.5V and thus 10V safely, but only for low load applications. 3V is the best option as there's not much energy below 3V, most of the power is in the 3.7V range.

@imnotbeluga007

Жыл бұрын

Cheap BMS boards like his trip at 2.5V/cell, or 10V.

Your taking sooo much care with the strips, but then u failed at the balancing leads.....

Its in searies how would that be a 20,000mah+ battery in parallel yes its 20,000+

😮👍👍

Yg saya tanyakan, berapa hasil volt ?

@seani9003

Жыл бұрын

3.7 x 4 = 14.8vdc 6800mah

Charging adeptar power

bms লাগবে 4s

How much Max Input Voltage for charging?

@markangelosegurola2941

2 жыл бұрын

16.8 - 17v

There is no F-ing way your getting 30 amps from that pack.

@MrStyle-sr1yv

2 жыл бұрын

he forgot to connect b min and b plus to the batteries with thick cable.

按錯了掣對不起

30A with one series connection. Yeah no. Add to that the fact that there is no 15A 3400mAh cell

6,800 mah

Hello

I'm from Indonesia. Greetings. If what you mean is 27,200 mah, are you sure? you have fooled a lot of people. even i can't believe that one 18650 battery has a capacity of 13500 mah. this is so ridiculous - 😊

Go ahead then, recharge it.

where is the heat sensor dude

@sigterm15

Жыл бұрын

total nonsense, turk guy

Lol you have tops 8 amp hours

@sigterm15

Жыл бұрын

he does not even have 6Ah