Nice video :) Couple of tips: 1) Make sure to use a BMS with balance charging/discharging capabilities (or use a balance connector) - to prevent any pair of cells from being overcharged (edit: looks like that board will balance, but a balance connector is better). 2) Make sure to use a capacity tester/analyzer to check that the cells used are still in good condition, if they are not brand new cells. Anything below 1,000mAh per cell is no good. 3) For those of you that don't have a spot welder (either can't make one, or too expensive), soldering will do the job as well (though it won't look as neat).
Sir i have a 4s 40A bms and my laptop is rated 14.4v. How many batteries can i use to get the 14,4v and the connection to the bms. Pls help its urgent.thanks for your video.
Hello, for first Ilike your Channel you make really good job. I'm not sure of how charge the batterie, do the BMS regulate the charge and we can use a DC adapter with 15v aprox or we absoluty need a li-ion charger and the BMS is just here for the security? Sorry for my english i'm french.
BMS will cut off power supply when battery full. and protection when battery overcharge. The best for lion pack you should buy IMAX B6. It have balance charge will be better.
can i use an original jbl 20v 4A output source to charge this battery? can damage the tpa3116, the site says the seller can feed with 8 to 26v. good work. I'm from Brazil I'm using google translator to talk to you
No. You must be using adapter 16.8V to charger for this battery. Becase maximum voltage of battery is 4,2V. 4,2x4=16.8V. If you using 20V to charger for this pack very dangerous. Do not try that. Thank you!
because it is a 4S pack (4 in series) and each cell is 4.2V max. So 4.2V * 4 = 16.8V for a 4S battery. If you want more compatibility (or just the best solution) then you can charge with a balance charger such as iMax B6 or Turnigy Accucel. it will charge depending on the number of cells you have.
@@zlatestoj4507 a 12V charger will not work because the nominal voltage of a 4S pack is 14.8V (maximum is 16.8V). You'll damage the charger and the cells will not charge. You also cannot use a 19V charger as that is more than the maximum voltage of 16.8V for that pack. Either use a 16.8V charger, or better still, use a balance charger (like an iMax B6) and set the charger to 4S mode. It will charge up the pack with the correct voltage.
Late reply but 4s is 4.2 x 4 = 16.8. 4.2 is the fully charged voltage per cell. 3.6 is the nominal voltage per cell so it = 14.4v. 12.8v is usually discharged or as most people will want to take a 4s pack. Anyway, so yeah he used a 16.8 charger because 16.8 is 4.2 (full charge x 4)
The thin wires is for balance cells? If I want to pull more watts for example a portable speaker ... those wires will be thin no? I will need 2 thicker wires. The question is where they are exactly connecting, I always wanted to build a portable speaker for myself, I am an excellent carpenter and I work with Fiberglass, etc. But when it comes to electronics, my knowledge is basic lol. I want to build a 3 cell battery for a 50w portable speaker. I want it to work both on DC and AC, Which means that the battery is full, it will transfer the current directly to the amplifier and stops charging the battery .. I would like to know do not create such a battery.
Dear my firiend! Yes. The thin wire for charging balance. It thin but ok bro. If you want to pull more watt you must be design more mAh, voltage for battery and 2 wires power (+,-) bigger for the best sound. Example: 4s3p, 5s3p, 6s 2p, 6s3p....incase speaker >50w i think you should be use 4s or 5s battery pack. I will make video design 5s battery in next day. Very easy to make switch to power supply for speaker when you don't wan to using battery but want to use AC power. Just use adapter >18v 5A.
They look like scavenged laptop battery cells so will depend on their previous usage. If you're going to make this with used cells then make sure to capacity check them first, to make sure that the capacity is what you require it to be. Any cell below 1000mAh should not be used.
@@KingMinhvuong Not true, almost all lipos are charged with 1C charging. Also the balance board will bleed off excess amps of certain cells and allow current to flow to the low ones, and should ramp down charging when almost fully charged to help get the most charge possible into the battery. If those are 2500mah cells(for example) you could charge at 10 amps and charge at the standard 1C rating, BUT the charge board only supports up to 8amps. A 3amp 16.8V power adapter would charge 3 times faster and be under 1/2 the 1C charge rating.
Charging that pack at 8A will severely limit the lifespan of the battery pack. You need to check the manufacturers datasheet for more info, but those batteries came from laptop packs and therefore are not designed for high current/fast charging. They charge at 1A per cell without a problem, but I don't recommend any higher. The capacity of those cells could also be quite low if they have been well used in the past, affecting the ability for them to be charged at higher currents.
Nice video :) Couple of tips:
1) Make sure to use a BMS with balance charging/discharging capabilities (or use a balance connector) - to prevent any pair of cells from being overcharged (edit: looks like that board will balance, but a balance connector is better).
2) Make sure to use a capacity tester/analyzer to check that the cells used are still in good condition, if they are not brand new cells. Anything below 1,000mAh per cell is no good.
3) For those of you that don't have a spot welder (either can't make one, or too expensive), soldering will do the job as well (though it won't look as neat).
Thank for your advice
Thanks for illustrative circuit diagram of BMS connections and overall video is quite informative.
why not measure the adapter output voltage ?
Sir i have a 4s 40A bms and my laptop is rated 14.4v. How many batteries can i use to get the 14,4v and the connection to the bms. Pls help its urgent.thanks for your video.
kalo 4 cell full 16,8, trus buat batrey ups 12v aman gk?, di bms nya kan ada proteksinya bang, trus jalan gk ya?
Hello, for first Ilike your Channel you make really good job. I'm not sure of how charge the batterie, do the BMS regulate the charge and we can use a DC adapter with 15v aprox or we absoluty need a li-ion charger and the BMS is just here for the security? Sorry for my english i'm french.
BMS will cut off power supply when battery full. and protection when battery overcharge. The best for lion pack you should buy IMAX B6. It have balance charge will be better.
Nice video.
Thank bro.kkkk
You should update the description i bought the battery holder and it was for bigger batteries.
Yes. Sorry about that
good job my friend
can i use an original jbl 20v 4A output source to charge this battery? can damage the tpa3116, the site says the seller can feed with 8 to 26v. good work. I'm from Brazil I'm using google translator to talk to you
No. You must be using adapter 16.8V to charger for this battery. Becase maximum voltage of battery is 4,2V. 4,2x4=16.8V. If you using 20V to charger for this pack very dangerous. Do not try that. Thank you!
@@KingMinhvuong Tank, my hero :)
Can i use the same bms to 10 batteries
Keep up the great work.
Thank bro
Wery nice work what is the total mah of this battery and how much hour backup it provides ??
It will create 5200 mah as 8 batteries are connected in series creating 14.8 volts, and the backup will depend on how much power is used
how can i make a 4s 3.7v?
Can we use 20A 4s BSM board for 3000mah lithium ion battery
Like Very good
Thank my friend
how many output amp ?
How much time does it take to charge it
How do you know, when the batteries are complete?
Can i use this for 14.8v 10A battey pack
Ok . It is better for speaker
@@KingMinhvuong i want to use for 12v 9A dc motor for 1 hour which battery should i use please tell me
Why should we use the 16.8v adapter?
because it is a 4S pack (4 in series) and each cell is 4.2V max. So 4.2V * 4 = 16.8V for a 4S battery.
If you want more compatibility (or just the best solution) then you can charge with a balance charger such as iMax B6 or Turnigy Accucel. it will charge depending on the number of cells you have.
@@TheSpotify95 but i think that each battery is 3.7v?
What is the capacity of the 14.8v battery???....by the way nice work😊
About 14,8v 2000mAh. thank you
@@KingMinhvuong Thanks
I thought you need to use a CC/CV charger to charge LI-ION batteries?
Ideally you need a balance charger like the iMax B6 or Accucel 6 - they do CC/CV charging modes.
and how many mah capicity of this ?
I make this battery pack but he's gives me 16.6v i have to reduce voltage 12-15v for use 1000 watt inverter can you help
me ?
Nice vídeo Bro
Thank a lot bro!
I like u r video 👍👌wow great work bro
Thank bro
@@KingMinhvuong what is batteries price ?
Can you put link where you buy the charger. Thanks
Please check description of video. Thank you
Saan Po makabili Ng charger Ng 14.8
How we can make this battery pack with higher capcity same 14.8v
You connect parallel battery. This video i connect 2 battery parallel so you can connect 3, 4 or 5 battery if you want.
Do you have video for your drill?
Wich drill? i have 3 drill: cordless drill+drill table+mini drill
@@KingMinhvuong Red cordless looks like you've updated the batteries
How it will indicate when charging is full??
When battery full. BMS and adapter will cut off power and the light of adapter turn from red to green
But your was still red when you remove the charge
Show sensacional
can this batery charge with 12v charger?
No. If you charge this pack with 12v adapter so adapter will die.
@@KingMinhvuongor with 19v charger it's ok or no
No. Please don't try another voltage.
This batery Charge with 16.8v adapter
@@zlatestoj4507 a 12V charger will not work because the nominal voltage of a 4S pack is 14.8V (maximum is 16.8V). You'll damage the charger and the cells will not charge.
You also cannot use a 19V charger as that is more than the maximum voltage of 16.8V for that pack.
Either use a 16.8V charger, or better still, use a balance charger (like an iMax B6) and set the charger to 4S mode. It will charge up the pack with the correct voltage.
This is a 4s2p battery pack as I'm not mistaken. I'm right ?
Exactly. You are right! Thank you!
The charger adapter I thought it had to be same voltage ?
No. If voltage of adapter the same voltage battery. can not charge.
Late reply but 4s is 4.2 x 4 = 16.8. 4.2 is the fully charged voltage per cell. 3.6 is the nominal voltage per cell so it = 14.4v. 12.8v is usually discharged or as most people will want to take a 4s pack. Anyway, so yeah he used a 16.8 charger because 16.8 is 4.2 (full charge x 4)
Can i order this battery pack from you? How much? Please im interested. Thank you
Sorry i don't make to sale but you can buy materials by link i put in description of video to building one.Thank you
The thin wires is for balance cells? If I want to pull more watts for example a portable speaker ... those wires will be thin no? I will need 2 thicker wires. The question is where they are exactly connecting, I always wanted to build a portable speaker for myself, I am an excellent carpenter and I work with Fiberglass, etc. But when it comes to electronics, my knowledge is basic lol. I want to build a 3 cell battery for a 50w portable speaker. I want it to work both on DC and AC, Which means that the battery is full, it will transfer the current directly to the amplifier and stops charging the battery .. I would like to know do not create such a battery.
Dear my firiend!
Yes. The thin wire for charging balance. It thin but ok bro. If you want to pull more watt you must be design more mAh, voltage for battery and 2 wires power (+,-) bigger for the best sound. Example: 4s3p, 5s3p, 6s 2p, 6s3p....incase speaker >50w i think you should be use 4s or 5s battery pack. I will make video design 5s battery in next day. Very easy to make switch to power supply for speaker when you don't wan to using battery but want to use AC power. Just use adapter >18v 5A.
What capacity does each battery have?
That is old battery, about 1000mAh
They look like scavenged laptop battery cells so will depend on their previous usage.
If you're going to make this with used cells then make sure to capacity check them first, to make sure that the capacity is what you require it to be.
Any cell below 1000mAh should not be used.
What is the ampere rating of single lithium ion battery, please reply me sir
600 mah
That will take forever using 1 amp. You could charge at 8 amp no problem.
If i charge at 8A. The life of battery not long.Thank you bro
@@KingMinhvuong Not true, almost all lipos are charged with 1C charging. Also the balance board will bleed off excess amps of certain cells and allow current to flow to the low ones, and should ramp down charging when almost fully charged to help get the most charge possible into the battery. If those are 2500mah cells(for example) you could charge at 10 amps and charge at the standard 1C rating, BUT the charge board only supports up to 8amps. A 3amp 16.8V power adapter would charge 3 times faster and be under 1/2 the 1C charge rating.
Charging that pack at 8A will severely limit the lifespan of the battery pack. You need to check the manufacturers datasheet for more info, but those batteries came from laptop packs and therefore are not designed for high current/fast charging. They charge at 1A per cell without a problem, but I don't recommend any higher.
The capacity of those cells could also be quite low if they have been well used in the past, affecting the ability for them to be charged at higher currents.
Put a warning sign or something before start of the video... 🤔 🤔
Tnank bro!. I will make that
how many volts does a single battery have?