EVE 306AH VOLTAGE TO SOC
This information can tell us about LFP prismatic format cells and how the SOC to voltage works.
This data is pulled from an online resource, where an EVE MB30 cell was discharged at 40Amps of current from 3.6v to 2.5v.
The total capacity of this cell was approx 333ah and the average voltage was 3.23V throughout this 3.6-2.5v range.
Some important points. 10% was approx 3.09V under load. This is as low as we recommend taking the LFP cells to avoid any significant damage. Many users try to aim for the 20% point which cant really be achieved through voltage alone, a shunt or BMS with shunt like the JK Inverter BMS, would be needed to stop the battery at 20% SOC.
This will probably not be accurate, but under a load of about 0.2C the voltage of 20% SOC MB30 cells would be about 3.19V.
EVE MB30 LiFePO4 Cell: Discharge Voltage vs. State of Charge
Plot based on the provided discharge curve data (interpolated to 2% SOC increments)
*This plot represents the **discharge curve** of the EVE MB30 cell, showing voltage as the battery discharges from 100% to 0% SOC. Data points were extracted from the provided image and interpolated for smoother representation.
EVE MB31 LiFePO4 Cell: Charge Voltage vs. State of Charge
Plot based on the provided charge curve (2% SOC increments)
*This plot represents the **charging curve** of the EVE MB31 cell, showing voltage as the battery charges from 0% to 100% SOC. The voltage profile during charging can differ from that during discharging.