Whether to choose a lithium battery for a battery car or a lead-acid battery mainly depends on individual acceptance, because both batteries have their own advantages and disadvantages. Let's take a look at the pros and cons of both batteries:
1. Number of charging cycles
The number of full charges and discharges of lithium batteries is about 500 times, while the number of full charges and discharges of lead-acid batteries is only about 300 times. When charged once a day, the lifespan of lithium batteries is 4-5 years, while the lifespan of lead-acid batteries is only 2-3 years. batteries have a longer lifespan.
2. Charging speed
Since the activity of lithium in lithium batteries is relatively high, when charging, lithium batteries will charge faster than llead-acid batteries. It's fast. You may not notice it during normal use, but in an emergency, the importance of charging speed will shine through.
3. Endurance
The energy density of lithium batteries is 120 to 180 WH/KG and the energy density of lead acid batteries is 40 to 70 WH. /KG Therefore, for batteries of the same capacity, the energy density of lithium batteries will be higher, and one of the deciding factors in battery life is the energy density of the battery, so the Lithium batteries have a better lifespan than lead batteries. batteries.
4. Cost of use
Lead-acid batteries are mainly made of lead plates. The price of metallic lead is much cheaper than that of metallic lithium. Therefore, lead-acid batteries The price of batteries is generally lower thanthat of lithium batteries. Additionally, lead-acid batteries can be repaired, while lithium batteries are disposable. Therefore, in terms of future usage costs, it can be concluded that. Lead acid batteries are more economical than lithium batteries.
The real feeling of replacing lead-acid batteries with lithium batteries is that the vehicle battery life has been significantly improved and the charging speed is also much faster. The current mainstream in the market is lithium batteries, but. Due to the relatively high activity of lithium batteries, it is therefore necessary to charge outdoors when charging and not to charge indoors to avoid explosions or fires.
Which car battery is better, lead acid battery or lithium battery?
I think both batteries have their owns pros and cons, but now more and more electric cars use lithium batteries.
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1. The price of lead-acid batteries of the same model will be lower than that of lithium batteries, which means that it will be more profitable to choose lead-acid. -acid batteries when replacing a set of batteries.
2. From a stability point of view. At present, lead-acid battery technology has become mature, and various products are relatively stable.
3 Lead-acid batteries are large and bulky. Generally, the high endurance body is also relatively heavy and has a high load capacity. short lifespan< /p>
According to the current trend, the performance of lithium batteries is significantly better than that of lead-acid batteries. Long life: The charge and discharge rate of lithium-ion batteries is. 1 C. Its lifespan is greater than or equal to 500times. However, even if the lead-acid battery is discharged to 0.5, it will discharge to 0.1. When charged to 5c, its life is less than or equal to 350 times, and its capacity is less than or equal to 60%. .
2. Good low temperature discharge performance: Lithium-ion batteries can work normally at -25°C and the capacity can reach 70%, while lead-acid batteries can reach 50% of the capacity at -25°C. 10°C But it cannot work properly at -25℃.
3. Strong charging capacity: After 2 months of a fully charged lithium-ion battery, its capacity is 80% or more, while a lead-acid battery is only 40% capacity. nominal capacity after 2 months of rest.
4. Strong endurance. The weight of lithium-ion batteries is only 30% of that of lead-acid batteries, so under the same voltage and capacity, lithium-ion batteries have greater durability.
5. High specific energy: Since the volume of lithium-ion batteries is only 30% of the volume of lead-acid batteries, the energy reserve of lithium-ion batteries is higher than that of lead-acid batteries. Batteries in the same use of space.
6. Wide operating temperature range: Lithium-ion batteries can operate in the range of -25c to 55c, while lead-acid batteries can only operate in the range of 10c to 40c.
7. Short charging time: Lithium-ion batteries can be charged with high current and the charging time is only 4-5 hours, while lead-acid batteries take 8-10 hours.
8. High environmental protection performance: Compared with lead-acid batteries, lithium-ion batteries are very environmentally friendly products. They contain a large amount of lead, a heavy metal, harmful to the human body. Andthe environment.
9. Large Current Discharge: Lithium-ion batteries discharge large current at 1C and the capacity is only 60% of the rated capacity.
10. High current discharge does not affect service life: High current discharge of 1.5c multiplier of lithium-ion battery does not affect service life. However, lead acid batteries discharge at a high current rate of 1.5c. Its lifespan only represents 30 to 40% of the nominal lifespan.