What are the characteristics of maintenance-free batteries and lithium batteries?

Features of maintenance-free batteries 1. Maintenance-free batteries consume very little electrolyte due to their structural advantages, so basically do not add distilled water during the service life. It also has the characteristics of shock resistance, high temperature resistance, small size and small self-discharge. The service life is generally twice that of ordinary batteries. 2. Since the maintenance-free battery uses a lead-calcium alloy grid, the amount of water decomposition during charging is small, and the amount of water evaporation is low. In addition, the shell adopts a sealed structure and releases very little sulfuric acid gas. Therefore, it is comparable to other batteries. Compared with, it has the advantages of no need to add any liquid, less corrosion on the terminal posts and wires, strong resistance to overcharge, large starting current, and long power storage time. 3. The maintenance-free battery has only a small amount of gas in the electrolyte under the normal charging voltage, so there is no need to add distilled water during the entire period of use. Under normal conditions of the charging system, it does not need to be removed for supplementary charging. However, the specific gravity of the electrolyte should be checked during maintenance. 4. The maintenance-free battery does not escape acid mist during normal charging and discharging. The hydrogen and oxygen when the water is decomposed are also converted into water through the catalyst and pressure in the battery. When over-voltage charging, the internal air pressure exceeds the setting of the pressure relief valve. It is discharged to the outside only when the value is reached, so the electrolyte loss is less under normal use conditions. 5. The maintenance-free battery has a new type of safety synchronizing device, which can not only keep acid gas inside the single cell battery, but also prevent sparks from entering the battery, which can not only reduce the battery explosion caused by external causes, but also keep the battery cover dry. Therefore, the corrosion of the terminal is reduced, and the electrical circuit connection is firm and reliable. The characteristics of lithium batteries 1. Both lithium batteries and lead batteries lose useful energy capacity under cold weather conditions, but the effect on lead batteries is much more serious. At a temperature of -20C, the useful energy of the lead battery is reduced to 30%. Under the same discharge conditions, the lithium battery retains 82% of the energy capacity. Lithium batteries not only last longer in high-temperature countries, but also last longer in very cold mountainous areas. 2. Low self-discharge and no memory effect. Adding a protective plate to the lithium battery during processing of the lithium battery can make the lithium battery have an overcharge and overdischarge effect. The lithium battery itself has high power endurance, and the lithium battery selected for electric vehicles can achieve a high-efficiency charging and discharging capacity of 15-30C, so that the high-intensity start-up acceleration of the car can be achieved. 3. It has high power endurance. The lithium iron phosphate battery used in electric vehicles can reach 15-30C charge and discharge capacity, which is convenient for high-intensity start-up acceleration; processing basically does not consume water, which is very important for water-deficient my country favorable. 4. Lithium battery has high voltage and light weight; the average voltage of a single battery can reach 3.7V or 3.2V. It is relatively equal to the series voltage of 2-4 nickel-hydrogen batteries or nickel-isolated batteries. If the customer requires the voltage of the battery to be used, the lithium battery is also easy to form a lithium battery pack, which is convenient and quick to increase the voltage of the lithium battery. 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: Which types of ternary materials lithium batteries?