Yes, you can charge a LiFePO4 battery with a normal charger, but it’s not recommended for long-term use. Here’s why:

1. Different Charging Logic: LiFePO4 battery have a distinct charging profile compared to traditional lead-acid battery. Lithium LiFePO4 battery chemistry use a CC/CV (Constant Current/Constant Voltage) charging algorithm, which limits the current to a predetermined level until the battery reaches the desired voltage. As the battery reaches maximum capacity, the current gradually decreases.

2. Voltage Sensitivity: The nominal voltage of a single lithium LiFePO4 battery cell is 3.2V, and the charge voltage range is 3.50-3.65V. Over-voltage can easily cause degradation of the LiFePO4 battery cells and performance, inflation, and even damage.

3. Suboptimal Charging Efficiency: Using a normal charger may result in suboptimal charging efficiency and could potentially lead to damage or reduced lifespan of the lithium LiFePO4 battery.

Therefore, it’s advisable to use a charger specifically designed for lithium iron phosphate batteries to ensure optimal charging efficiency and longevity of the Lithium LFP battery.