Top ten precautions for using lithium-ion batteries

1. How to use the newly purchased lithium-ion battery? Should it be charged or discharged first? How to charge and discharge? First discharge with a small current (usually set to 1-2A), and then use 1A current for charge and discharge cycles for 2-3 times , The battery is activated. 2. The new battery has just started to be used and the voltage is unbalanced. After charging and discharging several times, it is normal again. What is the problem? The important reason is that although the individual cells in the battery pack are paired well, there will still be differences in self-discharge. Individual differences. Generally, it will take more than 3 months for a new battery to pass from the factory to the user. During this time, the individual cells will exhibit different voltages due to different self-discharges, resulting in a voltage difference in the battery pack. The value becomes larger (that is, unbalanced); because the current chargers on the market all have a charge balance function, so the general unbalance will be repaired when the charger is charging. 3. Lithium-ion batteries should be stored in a cool and dry environment, with a room temperature of 15-35°C and an ambient humidity of 65%. 4. Important factors affecting the life of lithium batteries: 1. Temperature, the battery cannot be used or stored in an overheated environment (35℃); 2. Charge and discharge, the battery pack cannot be overcharged and discharged, and the voltage of a single cell must be guaranteed 4.2- Between 3.0V, the high-current working pick-up voltage should be guaranteed to be above 3.4V; 3. Choose a model with appropriate power to prevent the battery pack from being used under overload conditions. 5. The new lithium battery needs to be activated. If it is not activated, it will have an impact. The new battery will usually take more than 3 months from the factory to the user. The battery will be in a dormant state. It is not suitable for high-intensity discharge immediately, otherwise It should affect the efficiency and life of the battery. 6. What is the reason why the new battery cannot be charged? The battery has zero power, the battery has large internal resistance, and the charger mode is wrong. 7. The C number of lithium ion batteries means that C is the symbol of battery capacity, which has the same meaning as the current symbol I. The C number represents the multiplier that we often say, that is, the current size that the battery can work on the basis of the nominal capacity Abbreviation, taking 2200mAh20C as an example, 20C indicates that the current of the battery can work normally 2200mA20u003d44000mA; 20C discharge means that the battery is discharged with a current of 44000mA. 8. The best storage voltage of lithium battery. Generally, the battery charge at the factory is: a single voltage is between 3.70-3.90V, and the factory will generally bring 30-60% of the charge. 9. A new battery with a battery delivery date within 1 month is generally about 30mV or 0.03V. The battery pack that has been stored for a long time for more than 3 months can be used at 100mV or 0.1V, which exceeds the rated pressure difference. The battery pack can be used for 2-3 low current (1A) charge and discharge cycles with a smart charger with balancing function, which can repair most battery packs with abnormal voltage differences. 10. The battery cannot be stored for a long time after it is fully charged, and the storage time cannot exceed 7 days; the battery should be stored at a voltage of 3.70-3.90 for a single battery, which is beneficial to prolong the battery life. If it is not used for a long time, ensure that every 1-2 Charge and discharge once a month. Disclaimer: Some pictures and content of the articles published on this site are from the Internet, please contact to delete if there is any infringement. Previous: What are the important reasons for the bulging of lithium-ion batteries