What are the factors that affect the service life of lead-acid batteries?

Influencing factors of the service life of lead-acid batteries Although the manufacturing technology and manufacturing process of lead-acid batteries have been improved in recent years, there are still troublesome problems in the process of continuous use. That is, the service life of lead-acid batteries always seems to be unsatisfactory. On the one hand, the service life of lead-acid batteries is not up to standard, and its service life is shortened very quickly. 1. Depth of discharge Depth of discharge refers to the extent to which the discharge starts to stop during use. 100% depth refers to the full capacity of the discharge. The life of lead-acid batteries is greatly affected by the depth of discharge. The focus of design considerations is deep cycle use, shallow cycle use or floating charge use. If the shallow-cycle battery is used for deep-cycle use, the lead-acid battery will quickly fail. 2. The degree of overcharge. A large amount of gas is released during overcharge. At this time, the active material of the positive plate is impacted by the gas, and this impact will promote the shedding of the active material; in addition, the positive grid alloy is also subject to severe anodic oxidation and corrosion, so the battery Overcharging will shorten the application period. 3. The influence of temperature The life of lead-acid batteries increases with the increase of temperature. Between 10℃~35℃, for every 1℃ increase, approximately 5~6 cycles will be added, and between 35℃~45℃, per liter A higher temperature of 1°C can extend the life for more than 25 cycles; a temperature higher than 50°C will reduce the life due to the loss of negative electrode vulcanization capacity. UPS battery life increases with increasing temperature within a certain temperature range because the capacity increases with increasing temperature. If the discharge capacity remains the same, the depth of discharge decreases when the temperature increases, and the solid life is prolonged. 4. The influence of sulfuric acid concentration The increase in acid density is beneficial to the capacity of the positive plate, but the self-discharge of the lead-acid battery is increased, and the corrosion of the grid is also accelerated, which also promotes the loosening and shedding of lead dioxide. The increase in acid density reduces the cycle life. 5. The influence of discharge current density As the discharge current density increases, the life of lead-acid batteries decreases, because under the conditions of high current density and high acid concentration, the positive lead dioxide is promoted to loosely fall off. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: What are the precautions for extending the life of electric bicycle batteries?