How Does LiFePO4 Battery Work? Which is Better?

If you are someone who is just getting started with battery DIY, you will want to know how lithium iron phosphate(LiFePO4) batteries work as you learn. As you learn more about lithium iron phosphate batteries, you will know that what lithium-ion batteries are better. In this article, I will introduce you to the basic principles of how LiFePO4 batteries work, and the parameters you must know about the battery.

Structure of lithium iron phosphate batteries (Aolithium as an example)

The basics of batteries are not difficult. A battery consists of an anode, a cathode, a diaphragm, an electrolyte and two collectors (positive and negative). The anode and cathode store lithium. The electrolyte carries the positively charged lithium ions from the anode to the cathode and vice versa through the diaphragm. The movement of the lithium ions creates free electrons in the anode, which creates a charge at the positive collector. Current then flows from the collector to the negative collector through the device being powered (cell phone, computer, etc.). The separator stops the flow of electrons inside the battery.

Aolithium LiFePO4 battery is embedded with intelligent BMS in addition to high quality lithium iron phosphate cells. Of course, Bluetooth module is also necessary. These parts are assembled in a box that has shock resistance. The box is removable and very easy to maintain.

internal structure design of Aolithium LiFePO4 battery

Where does the voltage come from?

The voltage is actually the difference in charge between the positive and negative terminals of the battery. This means that the positive terminal carries a large number of negatively charged electrons and the negative terminal lacks positively charged electrons. If the difference in electrons between the positive and negative electrodes is greater, the higher the voltage of the battery.

When the battery discharges and provides current, the anode releases lithium ions to the cathode, which creates a flow of electrons from one side to the other. When inserted into a device, the opposite happens: lithium ions are released from the cathode and received by the anode.
The voltage of a single Li-ion battery is usually 1.5V to 2V. Aolithium 12V LiFePO4 battery is made by connecting four 3.2V cells in series.

How do batteries store electricity?

The key to getting a battery to store electricity lies in the electrolyte solution and the diaphragm. Both serve to prevent the transfer of electrons from the negative terminal to the positive terminal. This allows the battery to be charged, but not discharged.

Why lithium iron phosphate battery electricity can not be used infinitely?

As mentioned earlier, the voltage comes from the difference in charge between the positive and negative electrodes. When all the electrons from the negative terminal reach the positive terminal, the battery will run out of power.
If your battery is not rechargeable, then you need to discard it (which is polluting the environment).

If your battery is a rechargeable battery, simply connect him to a power source to charge it.

Aolithium batteries are rechargeable batteries. You can use a normal charger, solar panel, generator to charge the battery. This battery is very flexible and long life. It can deep cycle more than 4000 times. If properly maintained, you can use it for more than ten years.

What lithium iron phosphate battery is better?

When buying lithium iron phosphate batteries, you need to pay attention to these important parameters.

Below are the important parameters:

  • Battery Voltage
  • Max Charge Current
  • Max Discharge Current
  • Cycle Life
  • Warranty
  • Extra Functions

In addition to the superb craftsmanship, Aolithium battery comes with embedded BMS and Bluetooth module. You can monitor the status of the battery in real time through the APP after connecting Bluetooth. You can click here to go to the official website for more details about Aolithium battery.

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