Difference Between Lithium Batteries and Lead Acid Batteries

According to the market, where electric vehicles are sold now, there are various battery brands, styles and brands. Lead-acid batteries are lithium iron phosphate batteries. So what is the difference between lithium batteries and lead-acid batteries?

1. Weight and capacity of lithium battery and lead-acid battery

Lead-acid battery packs generally weigh 16 to 30 kg and are relatively large. The lithium battery pack is generally 2.5 to 3.0kg, relatively small in size, so it is light to ride and easy to carry. From the point of view of quality, it is difficult to define good and bad, but customers can buy high-quality batteries produced by regular manufacturers according to their actual needs.

Battery capacity: Lithium batteries typically have a capacity of 8 to 10 amps. A lead-acid battery has a capacity of about 20 amps. For example, with the same 48V battery, lithium battery and lead-acid battery electric vehicles can travel 30 to 40 kilometers when fully charged, and the speed depends on the size of the electric motor used.

2. The durability of lithium batteries and lead-acid batteries

Lithium batteries are durable, slow power consumption, can be fully charged and discharged more than 500 times, have no memory, and generally have a service life of 4-5 years. Lead-acid batteries are generally deep charged and deep discharged 400 times, have memory, and have a service life of about 2 years. If you are using a maintenance-free lead-acid battery, it should be noted that the battery loses less water, and generally do not add distilled water during use. In terms of durability, lithium batteries have good impact resistance, and batteries with a full state of charge are securely fixed. 1 hour, amplitude 4mm, frequency 16.7hz. No leakage, no battery expansion, no rupture, and the open circuit voltage is normal. 0.1ca battery can be charged for 48 hours, no leakage, no battery expansion, rupture, normal open circuit voltage, capacity maintenance rate of more than 95%; high current resistance, fully charged 2CA discharge for 5 minutes or 10CA discharge for 5 seconds, no conductive part fusion, good appearance No deformation.

3. Weight and safety of lithium batteries and lead-acid batteries

Lithium batteries seen on the market are far lighter than lead-acid batteries at the same size. Lithium batteries have one third of the capacity of lead-acid batteries under the same weight, which means that electric vehicles using lithium batteries will It is lighter and easier to operate than electric vehicles using lead-acid batteries.

Lead-acid batteries are more stable than lithium batteries and less prone to spontaneous combustion. Lithium batteries are more prone to spontaneous combustion due to unstable discharge characteristics and excessive discharge current.

Through the above understanding, I must have a certain understanding of lithium batteries and lead-acid batteries. Lead-acid batteries and lithium batteries have their own advantages, and users can purchase them according to their actual conditions.