Why do lead-acid batteries fail early?

Important reasons for the early failure of lead-acid batteries 1. The quality and manufacturing quality of the lead-acid battery itself; 2. The charging mode of the charging equipment (charger) matched with the lead-acid battery does not match the battery; what if the lead-acid battery is charged Does not match the charging equipment (charger), the charging voltage is too high, and the charging time is too long, which will accelerate the decomposition of water in the electrolyte (sulfuric acid aqueous solution), and the hydrogen and oxygen that appear cannot be completely recombined inside the battery, thus speeding up the battery Loss of water, and increase the corrosion of the electrode plate, accelerate the aging of the battery and the occurrence of early failure. 3. The user of lead-acid battery cannot use and maintain the battery in accordance with the maintenance requirements of the battery; 4. The short-circuit of the short-circuit lead-acid battery refers to the connection of the positive and negative electrodes inside the lead battery. The lead sulfate crystals of the negative plate grow up, and a small amount of lead sulfate remains in the separator after charging. Once the lead sulfate in the separator is reduced and called lead, if it accumulates too much, the lead-acid battery will have a micro short circuit. This phenomenon is called lead-by-bridging. The single cell voltage lags behind when the micro short circuit appears lightly, and the single cell short circuit occurs in severe cases. The active material on the electrode plate expands and falls off, which will also cause the positive and negative plates to be connected. 5. Balance problems Many lead-acid batteries can get better results in single test. However, for series-connected lead-acid battery packs, due to the original configuration errors such as capacity difference and open circuit voltage difference, the voltage during charging High batteries will lose water, low voltage batteries will be undercharged, and low voltage batteries will be over-discharged when discharging, resulting in lead-acid battery vulcanization. With the cycle of charge and discharge, the vulcanized monomers of lead-acid batteries are more easily vulcanized. This difference is enlarged and ultimately affects the life of the entire battery pack. 6. Self-discharge of lead-acid battery. Lead-acid batteries that are fully charged are left unused and gradually lose their power, which is called self-discharge. Self-discharge is not preventable, but long-term self-discharge without charging will cause battery failure. 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 article: What are the precautions for series and parallel connection of lithium iron phosphate battery packs?