What are the charging methods for UPS lithium iron phosphate batteries

The charger charges the UPS lithium battery with a constant current. As the battery voltage increases, the charger increases the charging voltage at the same time to speed up the charging speed. When the battery reaches the 4.2V cut-off voltage, the battery will only charge about 70% (not full) at this time. At this time, the charger continues to charge the battery with a constant voltage and a gradually decreasing current. When the value is less than 0.1A, the battery is still charged and the battery voltage continues to rise before stopping the charging. When charging lithium iron phosphate battery UPS and related products, the charger is best to choose the original special charger. Because the original charger is the most suitable in terms of voltage, charging speed, etc., it is also the least likely to damage the battery. Some mobile phone chargers are protected. When the voltage of the lithium iron phosphate battery reaches 4.2 volts, it stops charging. My idea is to connect a silicon diode with a higher power in series between the lithium iron phosphate battery and the charger. When charging, when the voltage of the lithium iron phosphate battery reaches 3.6 volts, the voltage drop of the diode is exactly 4.2 volts. , Can also be tested by the charger and stop charging. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Technical analysis of iron-lithium battery and ternary lithium battery pack