Author: Xantrex Team

Lithium iron phosphate (LiFePO4) batteries have made a lot of adoption in the automotive industry as more and more installers are using them as the preferred power source for their customers. However, LiFePO4’s older cousin, lithium-ion (Li-ion) batteries, common mostly in consumer electronics, has given LiFePO4 a number of misconceptions it needs to clear up.

In this article, we will cover top 10 misconceptions people make about LiFePO4 batteries in work trucks:

Misconception 1: LiFePO4 batteries are less energy-dense than other lithium chemistries.

Explanation: While it is true that LiFePO4 batteries have a slightly lower energy density compared to other lithium chemistries like lithium-ion, the difference is not significant and the benefits are significant (see misconception #3). LiFePO4 batteries still offer a high energy density, making them suitable for many applications, including commercial work truck auxiliary power.

Misconception 2: LiFePO4 batteries have a short lifespan.

Explanation: On the contrary, LiFePO4 batteries have a longer cycle life compared to other lithium chemistries. They can withstand a greater number of charge and discharge cycles before experiencing significant capacity loss. This extended lifespan translates to cost savings and enhanced reliability for work truck fleets.

Misconception 3: LiFePO4 batteries are prone to thermal runaway.

Explanation: LiFePO4 batteries have significantly improved thermal stability compared to other lithium chemistries like Li-ion. Designed for safe use, the phosphate-based cathode material is more chemically stable and less reactive, reducing the risk of thermal runaway, fires, or explosions. The design of LiFePO4 Xantrex Lithium is designed to reduce risk of thermal propagation which keeps thermal runaway to just one cell, significantly increasing the safety of its users.

Misconception 4: LiFePO4 batteries are heavy and bulky.

Explanation: While LiFePO4 batteries are generally heavier than lead-acid batteries, they offer a higher energy density, allowing for more power in a smaller package. Compared to other lithium chemistries, LiFePO4 batteries strike a balance between energy density and weight, making them a suitable choice for commercial work truck applications.

Misconception 5: LiFePO4 batteries require extensive maintenance.

Explanation: LiFePO4 batteries are virtually maintenance-free. Unlike lead-acid batteries that require regular watering and specific charging protocols, LiFePO4 batteries do not need maintenance tasks like electrolyte checks or equalization charging. They offer convenience and peace of mind to fleets.

Misconception 6: LiFePO4 batteries are not environmentally friendly.

Explanation: LiFePO4 batteries are considered more environmentally friendly than other lithium chemistries as they contain no toxic heavy metals like cadmium or cobalt, reducing their environmental impact. Additionally, their long lifespan and recyclability contribute to less waste.

Misconception 7: LiFePO4 batteries have limited temperature range.

Explanation: LiFePO4 batteries have a wider operating temperature range compared to other lithium chemistries. They can perform well in both high and low temperatures, making them suitable for various climates and work truck applications.

Misconception 8: LiFePO4 batteries have slow charging times.

Explanation: LiFePO4 batteries can be charged quickly, especially when using compatible charging systems. With advancements such as compatibility with solar panels, fleets can minimize downtime and maximize productivity.

Misconception 9: LiFePO4 batteries are prohibitively expensive.

Explanation: While LiFePO4 batteries may have a higher upfront cost compared to traditional lead-acid batteries, their long lifespan and reduced maintenance requirements offset the initial investment. Over time, the cost savings from fewer battery replacements and decreased downtime make LiFePO4 batteries a cost-effective choice.

Misconception 10: LiFePO4 batteries are not readily available.

Explanation: LiFePO4 batteries have gained popularity in recent years, and their availability has increased accordingly. Many installers and upfitters are carrying lithium as an option for fleets looking to upgrade their auxiliary power systems.

Conclusion:

By debunking these misconceptions, fleet managers can gain a better understanding of the true capabilities and advantages of LiFePO4 batteries. LiFePO4 batteries offer a safe, reliable, and efficient energy storage for work truck fleets when installed as part of an auxiliary power system, aligning with the industry’s goals of sustainability and operational excellence.

As municipalities and states implement anti-idling laws to reduce emissions and promote sustainability, fleet managers are exploring solutions to meet compliance such as incorporating auxiliary power storage. One common question fleets ask is what kind of battery to use for their auxiliary power storage as there are many types of batteries that can be installed onto a work truck. As not all battery types are created equal, it is important for decision makers to be informed on the different popular battery types and chemistries available.

Lead Acid Batteries:

Lead-acid batteries have been used in the automotive industry for many years and considered as the cost-effective solution for many years for many installers and upfitters. However, their benefits pale in comparison to modern batteries. Lead-acid batteries are heavy, have limited energy density, cannot deep cycle, and require regular maintenance. These drawbacks make them less suitable for the demands of modern work truck fleets.

Nickel Metal Hydride Batteries:

Nickel-metal hydride (NiMH) batteries emerged as a more advanced alternative to lead-acid batteries. Offering improved energy density, longer cycle life, and reduced maintenance requirements, NiMH batteries gained popularity in hybrid vehicles due to their ability to provide sustained power. A lot of electric vehicles use NiMH for their battery source simply because it was an early alternative to lead acid battery. Their energy density and overall performance still fall short when compared to lithium batteries.

Lithium Batteries:

Lithium batteries have revolutionized the world of portable power. They come in various chemistries, including lithium-ion (Li-ion) used in consumer electronics and lithium iron phosphate (LiFePO4). Most of the fears regarding Lithium batteries catching fire and exploding are caused by Li-ion batteries which have high energy density. Their prone to thermal runaway and are considered less safe compared to LiFePO4 batteries.

LiFePO4 batteries on the other hand offer several safety advantages over other battery chemistries with one key factor being their superior thermal stability. Thermal runaway, a phenomenon that can lead to battery fires or explosions, is significantly reduced in LiFePO4 batteries with the phosphate-based cathode material in LiFePO4 batteries being more chemically stable and less reactive. Furthermore, LiFePO4 batteries have a higher thermal runaway temperature, making them less likely to ignite even under extreme conditions. This characteristic ensures a higher level of safety during transportation, storage, and operation. In the event of an electrical short circuit, LiFePO4 batteries are more resistant to thermal runaway, thereby minimizing the risk of accidents and damage.

Another safety advantage of LiFePO4 batteries is their reduced risk of thermal propagation. Unlike Li-ion batteries, which are prone to experiencing a chain reaction of thermal runaway from one cell to another, LiFePO4 batteries have a lower tendency for thermal propagation based on the design and chemical makeup. This property helps contain any potential battery incidents, limiting the extent of damage and improving overall safety.

Moreover, LiFePO4 batteries exhibit a longer cycle life compared to other lithium chemistries. This means they can endure a greater number of charge and discharge cycles before experiencing significant capacity loss. With a longer lifespan, fleet managers can expect reduced battery replacements and increased cost savings in the long run with lithium iron batteries on their work trucks.

Conclusion:

While concerns over battery safety are valid, it’s important to recognize that not all lithium batteries are created equal. LiFePO4 batteries offer distinct advantages in terms of safety, thermal stability, and longevity. As anti-idling laws become more prevalent in the US, work truck fleet managers can confidently consider incorporating lithium iron batteries into their auxiliary power systems, knowing that they have chosen a safer and more reliable solution for their fleet’s needs.