Charging Performance¶

The charging performance page (/charging/performance) shows how you charge: energy totals, efficiency trends, AC vs DC split, and estimated fast-charging curves for the active vehicle.

Date Range Filter¶

A filter bar at the top lets you scope everything on the page to 7d, 30d, 90d, YTD, or All. The selected range is passed in the URL as ?range=… and shared with other analytics pages.

Summary Row¶

Three summary tiles sit at the top:

• Total Energy — kWh delivered in the current range
• AC vs DC Energy -- donut chart splitting energy by charge type. A small chip toggle above the donut switches the metric between kWh, Sessions, and Cost. Range recovery now lives on the Driving Performance page.
• Avg Efficiency — average mi/kWh (US) or km/kWh (metric) across sessions in range

Charging Efficiency Trend¶

An interactive scatter chart showing efficiency per session over time:

• Individual session points colored by charge type
• Rolling 10-session average overlay
• Optional regen overlay on a second axis when trip regen data is available

Monthly Energy by Type¶

A stacked bar chart of monthly kWh totals, broken out by charge type (AC vs DC).

Synthetic DC Charge Curve¶

Below the monthly chart, a synthetic aggregate DC charge curve shows average fast-charging behavior across DC sessions in the current range. It is based on peak power, taper points, and session count, not a direct measurement.

• X-axis: SOC %
• Y-axis: kW
• Badge: a small "Synthetic" badge shows that the curve is modeled, not recorded
• Fallback only: the curve appears only when no recorded DC sessions have detailed battery_status telemetry. If real curve points exist, use the Battery Analytics page's per-session chart instead.
• DC only: AC sessions are excluded because AC curves are effectively flat.

Use this card to get a quick sense of taper behavior even when you have not captured full telemetry for every fast charge.