What should I pay attention to when discharging lithium batteries?

At the beginning of charging, the voltage of the battery to be charged should be tested first. If the voltage is lower than 3V, pre-charge should be carried out first. The charging current is 1/10 of the set current, generally about 0.05C. After the voltage rises to 3V, it enters the standard charging process. The standard charging process is: constant current charging with the set current, when the lithium battery voltage rises to 4.20V, change to constant voltage charging, and keep the charging voltage at 4.20V. At this time, the charging current gradually decreases, and when the current drops to 1/10 of the set charging current, charging ends. Generally, the charging current of the lithium battery is set between 0.2C and 1C. The larger the current, the faster the charging, and the greater the heat generated by the battery. Moreover, charging with an excessive current will result in insufficient capacity because the electrochemical reaction inside the battery takes time. It's the same as pouring beer. If you pour it too fast, foam will appear, but you will be dissatisfied. 1. The discharge current cannot be too large. Excessive current will cause the internal heating of the lithium battery, which may cause permanent damage; 2. It cannot be over-discharged. The lithium battery is most afraid of over-discharge. Once the discharge voltage is lower than 2.7V, it may be possible Cause the battery to be scrapped; 3. Frequent deep charging and discharging are prohibited: Lithium batteries have almost no memory. When using lithium batteries or digital products, many people like to use up the power (protected by the protection board) and then recharge them. In the eyes of many people, this is also a method of activating the battery; 4. When charging and discharging, the current of the charger and the general current load of the electrical appliance should be within the specified range: excessive current load can easily cause battery damage. Internal short circuit damages the lithium ion and causes potential safety hazards in the circuit; 5. Lithium batteries are extremely sensitive to temperature. If used for a long time below freezing point, it may have a great impact and harm on battery life. Long-term exposure to an overheated environment will greatly reduce the life of the battery. In severe cases, the internal pressure will increase and cause an explosion. Even if there is no explosion, the battery will be quickly scrapped in high heat. 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 effects of low-temperature lithium battery packs on batteries?