COMPARE MEASUREMENTS
Every series, side by side.
Compare measured lifetimes and simple fits across CSV files. Each series is analyzed independently; your measurements stay in this browser.
Two columns per file: time/cycle, performance. Up to 2 MB per file, 10 MB combined.
Use consistent units and test conditions. Changing the unit label does not convert values. No pooled average or automatic ranking is calculated.
Choose files or load examples to begin.
Retention overlay
Select series below the plot to show or hide their measured curves.
Measured lifetime & model comparison
Values are absolute x-axis positions. “Not reached” is unknown, not zero. Extrapolated model values are estimates, not measured lifetimes.
| Series | Points / fitted | Measured threshold | Linear estimate | Linear slope | Exponential estimate | Fit quality (R²) |
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Compare like with like.
Independent normalization
The same reference rule is applied separately to each file. A battery starting at 2 Ah and one starting at 3 Ah both begin at 100% with the initial-value reference. Absolute performance still matters and is not represented by retention alone.
Different measurement times
Each threshold crossing uses neighboring measurements from that series. Fitting uses its own selected points. The overlay does not align, interpolate or pool observations between different series.
Exploratory analysis
Linear OLS and log-linear exponential fits describe the selected data. A higher R² does not prove a physical mechanism. No confidence intervals, automated burn-in detection, TS80 or certification calculations are included.