Li-Ion Battery Pack - lithium ion battery pack

Hello, I 've been building things since I was a kid, but surprisingly, this is my first note.
So, I will start with something simple but very useful and powerful. Li-
Ion batteries are used in laptops and mobile phones.
We can also use them in our project.
They are too powerful :) but they are too expensive again :( photo shows 11.
1 v 2200 mAh LiPo for Rs (similar battery ).
2000 (India) and Ali-
An ion of $26. 99.
Ladies and gentlemen, don't worry, I will teach you how to make these deadly monsters and show off to your friends.
I can build an 11 in India. 1V 1020mAh Li-
About $3 ion pack.
Let's get started :) Let's get the parts ready. The type of cell phone battery you choose will determine the performance of your battery.
From a local supplier, I managed to buy each 1020 mAh battery for Rs.
Less than $50 (India ).
JST is just a fancy name for a connector.
The reason we use them is that most Li-
The ion or fat batteries available in the project have these batteries, as well as the charger.
They added a little more cost.
The charger is also expensive.
If you manage the cost
Find an effective solution.
I plan to build a cheap solution for you guys.
Welding needs to be careful because there is a good chance that the battery terminals will be sorted when charging, which can damage the battery and even cause burns.
If so, put your burnt hands under cool tap water for a few minutes and ask your girlfriend to call a doctor.
It's a bit tricky.
If your battery is damaged, try it out first.
Press with a pair of nose and mouth pliers and remove the black plastic sheet on top of each battery.
There is a circuit inside.
For this item, it doesn't matter if you happen to break the plastic when you remove it.
It will be easier if you break the plastic carefully by pressing.
Do not let the terminal break, however.
Once the circuit is off slightly, remove the connection between the battery terminal and the circuit using a soldering iron.
Make sure you don't use pliers or soldering iron (through metal parts, I mean the battery terminals or the body (inside a sticker with the name of the company printed ).
I broke the circuit when I tried to use the damaged battery.
Once I get it, I can also take the circuit out with care (I broke the plastic in the process ).
Who knows when they will come in handy?
In the picture, the battery on the left has plastic damage and the circuit has not been removed.
The correct circuit was removed.
Cut the tape in half and take a small piece.
Put it around a terminal.
Do the same for another terminal.
This is to avoid contact between the terminals and the metal body.
Most of you are familiar with circuit diagrams.
They show you how to connect components to complete the circuit.
Here's how you need to connect.
All 3 units will be connected in series.
For balanced charging (This method ensures that no battery is overcharged), 4 outputs are obtained from each node of the battery pack.
The charger I use has the cool feature of the battery pack balancing the charge.
If you use a normal charger, you can exclude the wires for the 4-pin JST connector.
It is very important to connect the wires in the right way.
In the female JST connector, there are two gaps on the plastic head and you can see them in the previous chart.
The first one is a 2-pin female, black and brown correspond to black (-
OUT) and Red (OUT) in the figure ).
The second is the 4-pin mother, which should be connected to: Orange-Red-Brown-
Black on the photo-Blue-Green-
Red in the picture.
Your JST may have wires in different colors, so keep the JST head with gaps and match the wires accordingly.
Trust me, when you see another person blow up his stuff because of a hurry, you won't regret messing up your connection.
To avoid short circuit, you should put tape between two batteries.
You're almost done now.
Just cover it with tape.
You can charge it.
The two-pin JST connector is where you get the output (brown, black-in my case).
The battery offers more than it promises. 3x3.
7 v should give 11. 1v, yipee! ! ! it shows 12. 35v.
It provides good motivation.
When the battery is connected to a large DC motor, you can see the spark falling off.
I connected the battery to a plastic gear that was spinning too fast and I could use it to cut the wood and the gear was completely worn out.
A friend of mine has a little burn while using this and don't worry you just need to be careful.
You can also get a smaller voltage (3. 7 or 7.
4, in fact, around 4. 1 and 8.
1) get the output from two pins of the 4-pin JST connector.
I will try to post some cool photos.