LiFePO4 Battery Cells

LiFePO4 Cells Buying Guide

There are a few things you should consider before you buy:

• You should consider the capacity you need, which is measured in ampere-hours (Ah). This is the amount of energy the battery can store and provide over a period of time. Choose a capacity that can meet your power needs.
• You should also check the battery voltage. Lithium-ion phosphate batteries typically have a voltage of 3.2 volts per cell, so you need to determine how many cells you need to meet your voltage requirements.
• You should also consider the size and weight of the battery, especially if you plan to use them for portable applications.
• Make sure you choose a reputable manufacturer with a good track record in producing high-quality batteries. Diypow is a professional battery manufacturer, and we have sold 10,000 batteries with battery balance testing before each shipment, so you can have peace of mind.

This buying is covering the different features you need to know before making a buying decision. Let’s know more about this:

1. What is the difference between Grade A and Grade B LiFePO4 cells?
2. What is the QR code on LiFePO4 cells?
3. Is LiFePO4 better than lithium-ion?
4. How many cells are in LiFePO4?
5. What does the 4 mean in LiFePO4?
6. How long do LiFePO4 cells last?
7. How do you prolong the life of a LiFePO4 battery?
8. Can I use LiFePO4 cells without BMS?
9. How to choose a BMS for LiFePO4 cells?
10. How to top balance LiFePO4 cells?

1. What is the difference between Grade A and Grade B LiFePO4 cells?

The efficiency of the grade B cell is 80%~90% of that of grade A, and its battery materials, technology, energy storage, repeated charge, discharge, etc.  They have not undergone the same level of testing and quality control as Grade A batteries.

2. What is the QR code on LiFePO4 cells?

Simply put, the QR code on a LiFePO4 battery is its identification code, which allows you to access the battery's production information before making a purchase.

3. Is LiFePO4 better than lithium-ion?

The LiFePO4 battery has the edge over lithium-ion, both in terms of cycle life (it lasts 4-5x longer), and safety. This is a key advantage because lithium-ion batteries can overheat and even catch fire, while LiFePO4 does not.

4. How many cells are in LiFePO4?

LiFePO4 batteries are the safest lithium battery type currently available on the market today. The nominal voltage of a LiFePO4 cell is 3.2V when compared to sealed lead acid, which consists of 2V cells. Therefore, a 12.8V battery has 4 cells connected in series and a 51.2V battery has 16 cells connected in series.

5. What does the 4 mean in LiFePO4?

LiFePO4 stands for Lithium (Li) Iron (Fe) Phosphate  (PO4), and is the specific type of lithium battery that we build here at Diypow.

6. How long do LiFePO4 cells last?

Lithium iron phosphate chemistry is one of the most robust and durable battery types available and is therefore highly sought after in a variety of applications. With proper maintenance, these batteries can last up to ten years or more.

7. How do you prolong the life of a LiFePO4 battery?

For optimum performance and life, Lifepo4 batteries should be charged and discharged within the appropriate voltage range and not overcharged or deeply discharged. Overcharging or deep discharging may result in damage to the battery and shorten its life.

8. Can I use LiFePO4 cells without BMS?

The Battery Management System (BMS) is an essential component for Lithium Iron Phosphate (LiFePO4) batteries. LiFePO4 and all types of Lithium batteries are highly sensitive to over-voltage, under-voltage, and over-current.

9. How to choose a BMS for LiFePO4 cells?

Any LifePO4 BMS should be compatible with your LiFePO4 specs. For example, if you bought a 12V battery pack, you should be using a BMS rated for 12V. Most importantly, you want a BMS rated with the correct amperage.

10. How to top balance LiFePO4 cells?

1. Charge your battery pack using a suitable charger until it reaches about 95% SOC. ...
2. Set your DC power supply to 3.6V and a low current limit (e.g., 1A). ...
3. Connect the positive terminal of the power supply to the positive terminal of the first cell in your pack.