The service life of lithium batteries varies from a variety of factors, but can be summarized from the following aspects:
Cycle Life:
The service life of lithium-ion batteries can reach more than 500 cycles under the conditions of constant current fast charging and discharging, ambient temperature between 0 °C ~ 45 °C, and avoiding high temperature and impact. The cycle here refers to the process by which the battery is fully charged and discharged.
The cycle life of ternary lithium batteries on the market is about 1000 times, while lithium iron phosphate batteries can reach 2500 times.
According to the calculation of 400 kilometers of full battery life, the service life of the power battery can reach 400,000-800,000 kilometers, and if it runs 20,000 kilometers a year, it can run for 20-40 years.
Battery Type & Use:
Electric vehicle batteries made of polymer lithium batteries are theoretically used for about 500 cycles, which is about three years.
18650 cylindrical lithium-ion battery or prismatic aluminum-shell lithium-ion battery with a service life of 300 to 400 cycles.
The life of electric vehicle batteries made of lithium iron phosphate batteries can theoretically reach more than 2,000 times.
Influencing factors:
The performance quality of the battery itself, the working environment of the battery and the user’s use of the battery will affect the life of the lithium battery.
Factors such as the rate of charge and discharge of the battery, overcharge or overdischarge, the quality of the charger, charging and maintenance, etc., will also have an impact on the life of the lithium battery.
Specific use cases:
When not used for a long time and without charging, the life of the battery may be significantly shortened.
Improper usage habits, such as frequent exposure to the sun, frequent deep discharge before charging, and frequent sudden and intermittent detonation driving, will cause damage to the battery, resulting in a shorter life of the lithium battery.
To sum up, the lifespan of a lithium battery depends on a variety of factors, including the type of battery, conditions of use, charging method, etc. In order to prolong the service life of lithium batteries, it is recommended that users use the batteries according to the regular use requirements, and charge and maintain them regularly.