Calculators > SOC Estimator

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SOC Estimator

Estimate battery SOC from OCV and temperature with chemistry-aware OCV-SOC curve fitting.

How this works
SOC = f(OCV, T, chemistry)

Cell & Measurement

V
min

Thermal Correction

C
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Estimated SOC

38.0 %

Uncertainty

±30%

In LFP plateau region - OCV-SOC unreliable

OCV-SOC Curve with Hysteresis

Discharge Charge Your measurement
LFP Note: The flat plateau (3.2-3.3V from 20-80% SOC) makes OCV-SOC lookup unreliable in this region. Consider using coulomb counting for better accuracy.