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LTC4079E Li-ion IFR battery


I am using LTC4079 for charging LiFePo4 battery. The battery can be charged at 7.2V but I noticed that when charging is enabled LTC4079 outputs 7V only. I followed recommendation from datasheet to use 1% resistor 1.37M and 267K.

Could anyone explain why output voltage is low? I expect 7.2V when in charge mode. I measured by disconnecting the battery +ve terminal and charging enabled.



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