Which is better, lithium iron phosphate battery or lead acid battery?

Advantages of lithium iron phosphate battery（Lifepo4 Battery）:

1. Durability: The lithium iron phosphate battery has strong durability, slow consumption, more than 1000 charges and discharges, no memory, and a general life of 5-8 years.
2. Discharge rate: lithium iron phosphate battery can discharge with large current, which is suitable for solar street lamps, electric vehicles, electric bicycles, etc.
3. Volume and quality: lithium battery is relatively small.
4. Battery capacity: The capacity of lithium battery in the same volume is larger than that of lead-acid battery. The lead acid battery capacity is about 20A; The lithium battery has a capacity of 8-10 amperes.
5. No memory effect: no matter what state the lithium iron phosphate battery is in, it can be used as soon as it is charged, without first discharging and then charging.
6. Nominal voltage of monomer: lithium iron phosphate; nominal voltage of monomer: 3.6V.
7. Environmental protection: Lithium materials are free of any toxic and harmful substances, and are considered as green and environment-friendly batteries by the world. This battery is pollution-free in both production and use, and has become a research hotspot of widespread concern.

8. Safety: Lithium iron phosphate has passed strict safety test, and it will not explode even in the worst traffic accident, showing higher safety performance.

Advantages of lead-acid battery:

1. Generally, lead-acid batteries can be deeply charged and discharged for less than 300 times, with memory and a service life of about two years. And there is liquid in the lead-acid battery. After a period of consumption, if the battery is hot or the charging time is shorter, you need to replenish the liquid.
2. Generally, the weight of lead-acid battery is 16-30 kg, and the volume is large;
3. There is a large amount of lead in lead-acid batteries, which will pollute the environment if it is not handled properly after being discarded
4. Nominal voltage of single lead-acid battery: 2.0V. The voltage of an ordinary lead-acid battery is usually 12V.

Lithium iron phosphate battery has many advantages over lead acid battery:

1. Large capacity. The monomer can be made into 5Ah~1000Ah (1Ah=1000mAh), while the 2V monomer of lead-acid battery is usually 100Ah~150Ah, with a small variation range.
2. Light weight. The volume of lithium iron phosphate battery with the same capacity is 2/3 of that of lead-acid battery, and the weight is 1/3 of that of the latter.
3. Strong fast charging capacity. The starting current of lithium iron phosphate battery can reach 2C, realizing high rate charging; The current of lead-acid battery is generally required to be between 0.1C and 0.2C, which cannot achieve fast charging performance.
4. Environmental protection. Lead acid batteries contain a large amount of heavy metals - lead, producing waste liquid, while lithium iron phosphate batteries do not contain any heavy metals, and are pollution-free in production and use.
5. High cost performance. Although the lead-acid battery is cheaper than the lithium iron phosphate battery due to its cheap materials, it is less economical than the lithium iron phosphate battery in terms of service life and daily maintenance. The practical application results show that the cost performance ratio of lithium iron phosphate battery is more than 4 times that of lead-acid battery.

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