1, battery type: different types of batteries have different lifespans. For example, lead-acid batteries have a lifespan of about 2 to 3 years, while lithium batteries have a relatively long lifespan of about 5 to 6 years, and when they reach the end of their useful life, you can consider replacing them.
2, the use of the situation: the service life of the battery is also related to the use of the situation. If the battery is often in high or low temperature environment, or often deep discharge and charging, then the battery life will be shortened. In addition, if the battery is not used for a long time, it will also lead to battery aging, thus battery replacement time.