Configuration

Presets
Used for voltage, capacity, and safe current estimates.
Cells in series add voltage.
Parallel groups add capacity and current capability.
For sag estimate and safety checks.
Lower = more efficient ride / assist.
Accounts for heat and BMS overhead.
Simulated capacity fade (calendar aging not modeled).

Pack visualization

Pinch or scroll to zoom · drag to pan

Click a cell to plot its simulated telemetry. Hover the chart for values.

Results & safety

Pack voltage (nominal) — V
Pack capacity — Ah
Energy — Wh
Voltage under load — V
Max cont. current (est.) — A
Est. e-bike range — km
0→100% charge time — h
After cycles (capacity) — Ah effective

Series vs parallel

Series (S) connects positive-to-negative to multiply voltage. Parallel (P) ties like terminals to share current and add amp-hours.

Why safety matters

Mismatched cells, missing fusing, or exceeding cell current can cause heat runaway. Always use a proper BMS, quality cells, and verified wiring for your target current.

Pack assistant

Describe a goal in plain language. Suggestions are heuristic — verify with datasheets and a qualified installer.