Advantages of LiFePO4 batteries compared to lead-acid batteries

1. Large capacity

The LiFePO4 cell can be made into 5Ah-1000Ah, while the 2V cell of lead-acid batteries usually ranges from 100Ah to 150Ah, with a small variation range;

2. Light weight

A LiFePO4 battery with the same capacity has a volume of 2/3 that of a lead-acid battery, and a weight of 1/3 that of the latter;

3. Fast charging with strong energy

The starting current of LiFePO4 batteries can reach 2C, achieving high rate charging. The current requirement for lead-acid batteries is generally between 0.1 and 0.2C, which cannot achieve fast charging performance;

4. Environmental friendliness

Lead acid batteries contain a large amount of heavy metal lead, which leads to waste liquid, while LiFePO4 batteries do not contain any heavy metals and are pollution-free in production and use;

5. High cost-effectiveness

Although lead-acid batteries have lower purchase costs compared to LiFePO4 batteries due to their cheaper materials, they are less economical in terms of service life and daily maintenance compared to LiFePO4 batteries. The cost-effectiveness of LiFePO4 batteries is more than four times that of lead-acid batteries;

6. Long lifespan

The cycle life of LiFePO4 batteries can reach over 3000 cycles, while the cycle life of lead-acid batteries is only around 300-500 cycles.

In terms of safety, high and low temperatures have a significant impact on the safety of LiFePO4 batteries. Low temperature performance in low-temperature environments can sharply reduce the capacity of lithium-ion batteries and increase their internal resistance. During battery charging and discharging, the negative electrode material folds out to form lithium dendrites. With the increasing number of cycles at low temperatures, the range of lithium dendrites continues to expand, causing internal short circuits in the battery, leading to safety issues such as battery melting, ignition, and explosion. The capacity decay rate of lithium-ion batteries is very fast when the temperature is above 55 degrees Celsius in high temperature environments. Lithium ion batteries are not actually resistant and applicable in all high temperature situations. When the internal temperature of batteries exceeds 55 degrees Celsius, solid electrolytes decompose and accelerate chemical reactions, which can lead to thermal runaway of the battery. Therefore, iron lithium ion batteries need to have a suitable temperature range in high and low temperature environments.