The charge of lithium iron phosphate battery is recommended to use CCCV charging mode, that is, constant current before constant voltage. Constant current 0.3C is recommended. The recommended constant voltage is 3.65. that is, 0.3C current charge during the constant current process. When the battery voltage reaches 3.65V, 3.65V voltage constant voltage charge is adopted. When you charge with a balanced voltage power supply, you also need to look at the charging current, it is recommended not to charge with too high a voltage, adjust the voltage to ensure that the charging current is below 0.5C, which is good for the battery.
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General lithium iron phosphate battery charging upper voltage 3.7~4V, discharge lower voltage 2~2.5V, comprehensive consideration of discharge capacity, discharge median voltage, charging time, constant current capacity percentage, safety of these 5 aspects, the use of constant current constant voltage charging scheme, for lithium iron phosphate battery, charging limit voltage set at 3.55 ~ 3.70V is more reasonable. The recommended value is 3.60 ~ 3.65V, and the lower discharge voltage is 2.2V~2.5V.