What is the difference between lithium battery pack and lead-acid battery

Lithium battery: It is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. Storage battery: It is a kind of battery. Its purpose is to store limited electric energy and use it in a suitable place. Its working principle is to convert chemical energy into electrical energy. 2. Decomposition from the perspectives of weight energy density, volume energy density, service life, price, applicability, charging, national policies, environmental protection, etc. ① Weight energy density lead-acid battery pack weighs 16-30 kg, which is relatively large; The weight of lithium batteries is generally 2.5-3.0 kg, and the volume is relatively small. The energy density of current lithium battery packs is generally 200~260wh/g, and lead acid is generally 50~70wh/g. Then the weight energy density of lithium batteries is 3~5 times that of lead acid, which means that under the same capacity, Lead-acid batteries are 3 to 5 times that of lithium batteries, so lithium battery packs have an absolute advantage in lightening energy storage devices. ②Volume energy density The volume capacity density of a lithium battery pack is usually about 1.5 times that of a lead-acid battery, so with the same capacity, a lithium battery is about 30% smaller than a lead-acid battery. ③The service life of lithium iron phosphate cathode materials can reach about 2000 times, which is 1.5 to 5 times longer than that of lead-acid batteries. This greatly reduces the use cost of lithium batteries, prolongs the service life, and improves the ease of use. The cycle times of lead-acid batteries are usually only about 300 to 350 times, so the service life of lithium batteries is about 3-6 times that of lead-acid batteries. ④Price At present, the price of lithium batteries is more expensive than lead-acid batteries, about three times or so, but combined with the decomposition of service life and the same cost, the life cycle of lithium battery packs is still longer. ⑤ Applicability Lithium battery packs are slightly less safe than lead-acid batteries, so various safety measures must be taken during use, such as guarding against external forces or accidents that may damage the lithium battery, because it may cause fire or explosion; At present, the temperature applicability of lithium batteries is also very good, so in other adaptability, lithium batteries are not inferior to lead-acid batteries. ⑥The National Zhengce Lead-acid battery has serious environmental hazards caused by processing or discarded batteries. Therefore, from the perspective of national policy, it has restricted the reinvestment of lead-acid batteries, or restricted lead-acid batteries in certain areas. In the future, the trend of replacing lead-acid batteries with lithium battery packs will become clearer, and the progress will gradually accelerate. ⑦Charging speed Lithium battery has a wide range of charging efficiency, which is the magical advantage of lithium battery. When necessary, the charging time can be controlled between 20min and 1h, and the charging efficiency can reach more than 84%. Lead-acid batteries currently have no such performance. ⑧Environmental protection performance The lithium iron phosphate battery pack does not contain any heavy metals and rare metals, is non-toxic, and has no pollution during processing and use. It complies with European RoHS regulations and is a green battery. However, there is a large amount of lead in lead-acid batteries, and if it is not properly solved after it is discarded, it will still cause secondary pollution to the environment. 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: What are the charging methods for UPS lithium iron phosphate batteries