Are lead-acid batteries for electric vehicles better or lithium batteries?
September 24, 2021
Are lead-acid batteries for electric vehicles better or lithium batteries? What are the advantages and disadvantages of the two batteries?
The batteries used in the current electric vehicle market are mainly lead-acid batteries and lithium batteries. Whether it is electric bicycles, electric tricycles, or electric vehicles, batteries are a very important part. This article analyzes lead-acid batteries and The advantages and disadvantages of both lithium batteries make it easy for car owners to distinguish the mysteries and choose the type of battery that suits them.
Many friends have such troubles: Are lead-acid batteries durable or lithium batteries durable? Who is safer? Which is more convenient to use? Which is cheaper?
Indeed, these are the issues that we are most concerned about in actual use. This article analyzes the advantages and disadvantages of the two from five aspects, so that we can have a target in the purchase or use of the car, and will not choose the wrong one.
First, in terms of battery prices, lithium batteries are more expensive than lead-acid batteries.
Lead-acid batteries are currently on the market for a set of dozens of dollars, while lithium batteries with the same energy generally cost several hundred dollars. If it is a lithium iron phosphate battery, it is more expensive, because lithium iron phosphate batteries are safer. In terms of price, lithium batteries are generally lead-acid. Twice or more than the battery.
Second, in terms of battery capacity, lithium batteries of the same size have more capacity.
Because the average voltage of lithium batteries is higher than that of lead-acid batteries, that is, the energy density is higher. In this way, the capacity of lithium batteries is larger for batteries of the same size.
The same is the lithium battery, the capacity of the ternary lithium battery is larger than that of the lithium iron phosphate battery, and the lithium iron phosphate battery has a larger capacity than the lithium manganate battery.
Third, in terms of battery weight, lithium batteries of the same volume are lighter than lead-acid batteries.
This means that the energy density of lithium batteries is greater. For example, the energy of a catty of lithium batteries is equivalent to the energy of three to five kilograms of lead-acid batteries, so lead-acid batteries are heavier with the same energy.
So if we want to make it easier to screw up, we can choose a lithium battery.
Fourth, in terms of battery safety, lead-acid batteries are safer.
The main component of lead-acid batteries is water, there is no organic electrolyte, and there are very few explosions or fires.
However, because lithium batteries have a certain sealed space and contain organic matter, if they are used improperly, they may explode and fire. Among them, lithium iron phosphate batteries are safer than ternary lithium batteries.
Fifth, in terms of battery life, lithium batteries are about three times longer than lead-acid batteries.
The criterion for this judgment is that under the same quality, the number of cycles of a lithium battery is about 2000 times, a UFO Power lithium battery can reach 6000 times, and a lead-acid battery can reach about 300 times. For example, if you are a lead-acid battery, you have charged 300 times. After the sub-charge, the battery is basically aging, so the life of the lithium battery is longer.
Comparison of the advantages and disadvantages of the two batteries:
1. Lead-acid battery:
Advantages: lower price, safer to use.
Disadvantages: heavy weight, large volume, shorter service life.
2. Lithium battery:
Advantages: light weight, small size, long service life, easy to take out or carry.
Disadvantages: The price is more expensive, and the safety is relatively small.
Which one is better?
Lithium batteries and lead-acid batteries have their own advantages and disadvantages. We can't just say which one is better. The key is to look at the needs and uses of users. The best way to ride is to suit their own riding. Relatively speaking, lead-acid batteries The technology used is more mature, and the price is cheaper, especially the safety is higher, and the technology of lithium battery is still being developed and perfected, and the price is constantly adjusted.
Therefore, in the current market, most people choose lead-acid batteries for two-wheel electric vehicles and three-wheel electric vehicles. However, high-speed electric vehicles have relatively high requirements for batteries, requiring high speed and large capacity, so lithium batteries are generally used for high-speed electric vehicles. In some cities, you can choose lithium batteries if the vehicles are light and easy to take out.
