Check the address that stores remaining capacity vs. full capacity. If the battery is actually charged to 4.2V/cell but the EEPROM still reports a voltage of 3.27V, the ADC is miscalibrated. If, after a full charge, the EEPROM’s "full" bit is set AND voltage reads 3.27V, you likely have a 3-series LiFePO4 pack (3.27V * 3 = 9.81V, which is not full but could be nominal). That mismatch indicates the wrong chemistry profile.
In forums, users report: "Used BE2Works v3.27 full version – now my battery EEPROM works!" That’s likely the source of this keyword. battery eeprom works 3.27 full
⚠️ Only work on battery PCBs that are disconnected from cells. Never short SCL/SDA to battery positive (B+). Use a series resistor (1k-10k) on SMBus lines if unsure. Check the address that stores remaining capacity vs