How many years does the lithium battery of the solar street light last?

There are currently two types of lithium solar batteries on the market. One is the ternary lithium battery, which generally has a lifespan of about 5 years. In fact, the number of cycles is usually less than 1,000 times. Battery capacity will gradually decrease after 3 years. After that, attenuation will become important. There is also a lithium iron phosphate battery, which has a cycle count of around 2,000 times. However, the low temperature effect of lithium iron phosphate batteries is very weak. It is generally better to use in high temperature areas and has a long service life. about 6-8 years old.