Introduce mobile phone lithium-ion battery charging common sense

Common sense of mobile phone lithium-ion battery charging 1. Origin: 12-14 hours: The first-generation nickel-cadmium battery requires a low charging rate. Generally, the charging current is 1/10c. For example, if your battery capacity is 600mAh, then 1C is 600mA, 1 /10c is 60mA. Therefore, it takes more than 10 hours to fully charge. For nickel-cadmium batteries, charging at a low rate is beneficial. 2. Li-ion battery knowledge: We only discuss capacity. There are two methods to measure the capacity of lithium-ion batteries: charge 1C and discharge 0.2c; charge 0.2c and discharge 0.2c. Regardless of the charging system, they must meet the standard. Since lithium-ion batteries are different from nickel-cadmium batteries in the past, charging at a higher speed is acceptable and should be the same. If a 600mAh battery is charged with 1C, it will be fully charged in about 1 hour. If the mobile phone is designed to charge like this (mostly 0.5-0.8c), then 12-14 hours is meaningless. 3. What is activation? The lithium-ion battery itself is charged. If the designed capacity is 600mAh, even if I charge it for 2 hours, it will be full, and then discharge it, and the capacity will be 600mAh. The designed capacity is ok. What is the problem of charging and not charging? ? The technical supervision department implements national standards. The test capacity is charged after 1C and then removed. It should be qualified once out of five times. So use it normally, charge it normally, and continue with the new battery without worrying about excitement. 4. Current status of mobile phone batteries: All mobile phones use lithium-ion batteries. The closest thing to our impression is the 3210 released in 1999, which is equipped with nickel-metal hydride batteries. Mobile phones using Ni-MH batteries are not found around us. 5. According to the GB/T182872000 national standard, when the constant current is charged to 4.2v, the voltage becomes constant current, and the current drops to 0.01c, it is regarded as the termination of charging. For example, if the charging current of the charger is 0.5c, charging a 600mAh battery, the charging current will drop to 6mAh in about 2 hours, and it is considered full at this time. Why is 0.01 degrees Celsius? Because it is full, it is a reflection of cells. For metal hydride electricity, the national standard also stipulates a high-rate charge and discharge index. 6. Charging for 14 hours: At present, most mobile phone batteries are lithium-ion batteries. As the mobile phone is charged, it has been fully charged in about 2 hours. The result of this step is displayed through cross charging; the remaining time is spent on constant voltage charging or On the trickle charging, this gives the phone a larger battery capacity and longer standby time. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Brief analysis of the diaphragm performance of lithium-ion batteries