How to charge a lithium-ion battery for the first time

Li-ion battery charging method: (1) Standard charging method: charge with 0.2C5 constant current until the battery terminal voltage is 4.20V, change to constant voltage charging, until the charging current is less than 0.01C5, it is regarded as full. The standard charging method is often used for the calibration of battery capacity. Because the charging is too slow, it is rarely used in daily use. ⑵Fast charging method: charge with 1C5 constant current until the battery terminal voltage is 4.20V, change to constant current charge, until the charging current is <0.01C5. Precautions for fast charging method: ①The initial charging current should not be too large to prevent the battery from overheating and leaking or bursting. ②When the battery terminal voltage reaches 4.20V, it must be switched to constant voltage immediately. The voltage requirement is relatively high (error <0.5%), and it must be measured with a four-and-a-half-digit multimeter. Li-ion battery discharge method: (1) Standard discharge method: discharge at a constant current of 0.2C5 until the battery terminal voltage is 2.75V. Because it is difficult to meet this condition in daily use, it is of little significance. This method is mainly used for the calibration of battery capacity. ⑵Fast discharge method: Because the internal resistance of lithium-ion battery is very small, it allows high current discharge. At room temperature, it can discharge at 1C5 current for more than 54 minutes (above 90%); 1.5C5 discharge time is more than 30 minutes; 2C5 discharge time More than 23 minutes; and allow short-term larger current discharge. How long does it take to charge the lithium-ion battery for the first time? 1. Regardless of whether the lithium-ion battery is a new battery, it can be unplugged and used when it is fully charged. Generally, it is fully charged for 2-4 hours. Do not charge for more than 8 hours to 12 hours. Harmful and useless; 2. When the mobile phone battery is too low prompt, you should try to start charging as soon as possible; 3. Li-ion battery activation does not require special methods, it has been activated before the battery leaves the factory. If you insist on using the circulated first three 12-hour long charge activation methods, it will actually not be effective. The most important tips for charging and discharging lithium-ion battery mobile phones in use: 1. Charge according to the standard time and procedure, even if it is the first three times, first plug the charger (line charge) into the power source and then charge it. Plug the output end of the device into the charging port of the mobile phone (can be switched on and off for charging) 2. When the mobile phone battery is too low, you should try to start charging as soon as possible; the lithium-ion battery is most vulnerable to damage in the case of over-discharge! 3. Lithium-ion There is no special way to activate the battery. The lithium-ion battery will be naturally activated during normal use of the mobile phone. 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: How to distinguish the quality of lithium iron phosphate battery brand