Today, I'll teach you how to make a 3-string 12V lithium battery pack.
This is an 1800mAh 18650 lithium battery.
First, identify the positive and negative terminals of the battery.
Then, invert the middle battery.
This forms a series connections.
Then, use hot glue to secure the batteries in place.
Next, start connecting the batteries.
Connect the positive and negative terminals using nickel strips.
Using the same method, solder two nickel strips underneath the batteries as well.
The remaining two terminals will serve as the output ports.
They are respectively the negative and positive terminals for the 12V output.
Let's make a mark for identification.
So, the first nickel strip that you soldered corresponds to the 3.7V point.
The second nickel strip corresponds to the 7.4V point.
Next, you can solder the lithium battery protection circuit board. The board's 3.7V terminal should be soldered to the 3.7V nickel strip, and similarly, the 7.4V terminal should be soldered to the 7.4V nickel strip. The remaining B- terminal should be connected to the 0V terminal, and the 11.1V terminal should be connected to the 12V terminal. Once connected, you will have a 12V battery pack.
17 июн 2024
