Because an overvoltage can be applied to the
LiFePO4 battery without decomposing the electrolyte, it can be
charged by only one step of CC to reach 95% SOC or be
charged by CC+CV to get 100% SOC. This is similar to the way lead acid
batteries are safely force
charged.
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LiFePO4 cells need a simple Bulk/Absorption charge profile followed by reverting to a power supply mode (still usually called float but acts differently to a lead acid charger float stage) which holds the voltage at around 13.6V and maintains any loads drawing from the battery.