How to calculate the charging time of 18650 lithium ion battery

(2) According to the national standard, it is advisable to charge the rechargeable battery not higher than 0.2C (C is the nominal capacity). According to this standard, the above coefficient is set to at least 1.2. Due to the high capacity of the 18650 lithium ion battery, plus According to the characteristics of the chargers of different lithium-ion battery charger manufacturers, the coefficient in the calculation of the charging time of the 18650 battery is generally set to 1.5, and the chargers are basically designed according to this principle. For example, the capacity of 18650 battery is generally 1800~2600mAh. According to the above formula, the choice of charger and the charging time of 18650 battery (discharge within 0.2C) are generally as follows: (3) 1800mAh generally uses a 350mA charger, about 7.5 Hours (1800u0026pide;350×1.5), (4) 2000mAh generally uses a 400mA (350mA) charger, about 7.5 hours (if using a 350mA charger, it takes 8.5 hours), (5) 2600mAh generally uses 500mA The charger is about 7.8 hours (2600u0026pide;500×1.5) (6) Some chargers may have different designs, but there are generally three coefficient options: 1.2, 1.3, 1.5. The smaller the coefficient, the shorter the 18650 battery charging time. (7) In practice, the charger itself is equipped with an overcharge protection device. Some battery manufacturers also set the 18650 battery charging time through the protection board and protection IC in the design, as long as the consumer uses the battery and the charger Just use it. A slight supplement to the charging time of the 18650 battery is: it is best to stop charging in time after the charger indicator changes, because the overcharging caused by the 18650 battery charging time is too long, which will damage the charger and the 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 post: Where is the harm of lithium-ion battery electrolyte