How Long Will A LiFePO4 Battery Last?

Author: Polinovel | July 13, 2022

Overview

LiFePO4 battery, popularly known as lithium iron phosphate battery, is one of the most durable batteries available on the market.

In this article, we will mainly discuss how long will the LiFePO4 battery last, and how to look after the battery to extend its lifespan.

Part 1. What Is A LiFePO4 Battery?

LiFePO4 is short for Lithium (Li) Iron (Fe) Phosphate (PO4). It is a type of lithium battery. It has many advantages compared to lead-acid batteries and other lithium batteries, such as a longer lifetime, lighter weight, better safety performance, etc. LiFePO4 batteries are gaining popularity in the industry.

Part 2. How Long Will LiFePO4 Batteries Last?

LiFePO4 batteries, also LFP batteries, are designed to last a maximum of 10 years. They can last about 5,000 cycles at 80% depth of discharge, which is much longer than lead-acid batteries. Thanks to the long lifespan of LFP batteries, many people will choose to use them in many applications.

And we should remember that there are several factors that can affect the lifetime of LiFePO4 batteries, such as depth of discharge, operating temperature, etc. So let’s discuss how to look after the batteries to increase their lifespan.

Part 3. How to Look After LiFePO4 Batteries?

There are a few things we should pay attention to extend the lifespan of our LiFePO4 batteries and optimize their performance.

Charge The LiFePO4 Batteries Correctly

To ensure optimum performance over the LiFePO4 batteries’ lifetime, we need to properly charge them. One of the main causes of decreased battery life and poor performance is overcharging. Overcharging can cause heat inside the batteries, and extreme overcharging may cause a fire.

The maximum voltage of each LiFePO4 battery cell is about 4.2V. It is recommended to charge the battery to about 3.65V per cell, which ensures a lower charging temperature and prevents damage to the battery over the long term.

Over-discharging may also cause damage to the LiFePO4 batteries. The proper DoD range is 70-80%.

Store The LiFePO4 Batteries Carefully

Proper storage is also essential if you want to take good care of your lithium iron phosphate batteries.

The batteries may self-discharge during storage (<3% per month for LiFePO4 batteries), and high temperatures will reduce the capacity and performance of lithium batteries. So, storing the batteries at a suitable ambient temperature can prolong their life. The following is the recommended storage temperature range:

One month: -20 °C to 60 °C
Three months: -20 °C to 45 °C
Six months: -20 °C to 25 °C

Summary

LiFePO4 batteries have a long lifespan and great performance. If you want reliable LiFePO4 batteries, you can always choose Polinovel. As a trustworthy lithium battery manufacturer, Polinovel strives to provide customers with safe, high-quality, and long-lasting LiFePO4 batteries.

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