Why are LiFePO4 batteries safer?

If you are struggling to choose which type of battery to use for applications such as UPS/AGV/AMR/lead-acid replacement/solar lights/off-grid solar/startup power, I will recommend the safest option: lithium iron phosphate (LiFePO4) batteries.

Why are LiFePO4 batteries safer? Let’s discuss LiFePO4 batteries together.

What is a lithium iron phosphate battery?

Lithium iron phosphate batteries, also known as LFP batteries, are  lithium-ion batteries with a positive electrode material of lithium iron phosphate and a negative electrode material of carbon. The nominal voltage of a single LiFePO4 cell is 3.2V, and they can be assembled into battery packs with different voltages and currents through various series and parallel configurations.

What are the characteristics of lithium iron phosphate batteries?

1. High Charge/Discharge Efficiency: LiFePO4 batteries have a charge/discharge efficiency of over 90%.
2. High Safety: LiFePO4 batteries are structurally more stable compared to other lithium batteries, making them less prone to decomposition, overheating, collapse, and other issues.
3. Longer Lifespan: LiFePO4 batteries have a longer cycle life, with a lifespan of over 2000 cycles and a theoretical usage of 7-8 years.
4. Excellent Performance in Extreme Temperatures: LiFePO4 batteries can operate effectively in temperatures ranging from -20°C to 75°C, with heating peaks reaching 350°C – 500°C.
5. Higher Capacity: LiFePO4 batteries have larger capacities, ranging from 5Ah to 1000Ah, compared to lead-acid batteries or other lithium batteries.
6. No Memory Effect: LiFePO4 batteries do not suffer from memory effect, allowing them to be used and charged at any state of charge without the need for full discharge.
7. Lighter Weight: LiFePO4 batteries are lighter than lead-acid batteries, weighing only one-third of the weight under the same conditions.
8. Environmentally Friendly: LiFePO4 batteries do not contain heavy metals, making them more environmentally friendly.

Why are LiFePO4 batteries safer?

The safety of LiFePO4 batteries is primarily due to the strong P-O bonds in the LiFePO4 crystal structure, which requires temperatures as high as 600°C to decompose. Compared to other batteries, LiFePO4 batteries are safer, have a longer lifespan, require no maintenance, and offer better charging and discharging performance.

Especially with recent incidents of lithium battery fires and explosions, battery safety has become increasingly important. Choosing a safe battery is crucial, and it is essential to find a reliable battery manufacturer. As a LiFePO4 battery manufacturer with over 20 years of experience, PLB can provide professional lithium battery solutions.