leafRead the cell chart
Open Battery → Cell voltages. Each bar represents a measured cell pair. Leaf Pro displays 96 pairs, plus minimum, average, maximum and the difference between the highest and lowest values. Tap a bar to see its cell number, voltage and available detail.
The vertical scale is designed to reveal differences. A visibly short bar does not automatically mean a physically empty cell. Read the numerical spread and operating conditions alongside the chart.
Understand millivolt spread
Spread is maximum minus minimum, expressed in millivolts. For example, 3,812 mV minus 3,790 mV is 22 mV. It is a comparison at one moment. Charge state, current and temperature can change that comparison, so an idle reading and an acceleration reading are not equivalent tests.
Look for a cell pair that repeatedly sits apart under comparable conditions. A single unusually wide sample can justify further investigation, but it cannot identify a repair on its own. Never deliberately drain the battery or perform unsafe accelerations to provoke a result.
Use the histogram and shunt status
The Cell balance card groups readings into voltage buckets. A compact cluster and a wider distribution tell different stories, but the same context still applies. Where balancing status is available, the app also shows the relevant shunt information. Activity indicates what the controller is doing; it does not prove that balancing has finished or that capacity has been restored.
Record instead of chasing the screen
For a pattern over time, use Full Assessment or enable cell polling during a journey. Faster live-data updates may require less frequent bulk cell reads; see polling settings. Review the recording while parked.
Read voltage-loss inspection separately. It is a conditional check, not another name for the cell chart.