It should charge LiFePo4 batteries, but if it is not designed for them it will only charge them to about 85%. When LiFePo4 batteries reach about 85% charged, the voltage level makes a standard charger think the batteries are fully charged and the converter goes into a float state. Converters with LiFePo4 profiles charge at a higher voltage in order to fully charge the batteries. WFCO brand converters that are LiFePo4 ready have an "-AD" at the end of the model number, which stands for auto-detect. They began showing up in 2021 - 2022. They are usually deck mount converters and plug into the back of the power center.