What are the general tips for charging a lithium-ion battery for a fever?

The voltage range of lithium battery safety is 2.8~4.2V, lower or higher than this voltage range, the lithium ion in the battery becomes very constant, and even causes chaos. To ensure that the battery is in a safe range, a special charger is required. 2. Before activating the lithium-ion battery charger to start charging, it will supply the battery with a small current, and at the same time detect the battery voltage change, and gradually increase the current until the set value. This process can be regarded as a test charge for activation possible. 3. The constant current variable voltage charging charger charges the battery with a constant current. As the battery voltage increases, the charger increases the charging voltage at the same time to accelerate the charging speed. 4. Variable current and constant voltage charging. When the battery reaches the 4.2V cut-off voltage, the battery will only enter about 70% of its power (not full) at this time. At this time, the charger continues to charge the battery with a constant voltage and a gradually decreasing current, and the charging is stopped when the battery voltage continues to rise when the value is less than 0.1A. 5. Beware of charging at low temperatures. If you use lithium batteries at low temperatures, that is, below 4C, the battery life will also be eliminated. The original lithium-ion batteries of some mobile phones cannot even be charged at low temperatures. 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 basic methods for repairing common mobile phone lithium-ion batteries?