● The chargers for lithium iron phosphate (LFP) batteries are different from those for regular lithium-ion batteries. The maximum termination charging voltage for lithium-ion batteries is 4.2 volts; for LFP batteries, it's 3.65 volts. The safe operating voltage range for lithium batteries is 2.8~4.2V. Below or above this voltage range, the lithium ions in the battery become very unstable, potentially causing accidents. To ensure LFP batteries operate within this safe range, a dedicated charger is required. These chargers automatically adjust the charging method based on the battery's current state.
● It is recommended to use the CCCV charging method for lithium iron phosphate batteries, which means constant current followed by constant voltage. The recommended constant current is 0.3C, and the recommended constant voltage is 3.65V. That is, charge at 0.3C during the constant current phase, and once the battery voltage reaches 3.65V, use a constant voltage of 3.65V. Stop charging when the charging current drops below 0.1C (or 0.05C), indicating the battery is fully charged.
● When charging, it is best to use the original manufacturer's dedicated charger; otherwise, it may affect or damage the lithium iron phosphate battery.
● Prevent charging at excessively high temperatures. If lithium iron phosphate batteries are used in environments above the specified operating temperature, i.e., above 35°C, the battery capacity will continuously decrease, meaning the battery's power supply time will not be as long as usual.
