Custom 18650 / 21700 Battery Packs

Choose a cell, set your series × parallel combination, and the pack drawing, voltage and capacity update live. When it looks right, send it straight to the inquiry form.

Cell type

Chemistry

Series (S)

1–20S. Sets voltage.

Parallel (P)

1–12P. Sets capacity.

Cell capacity

Per-cell rating.

BMS / protection

Connector

Wire length (mm)

Quantity (pcs)

Pack 3S2P 18650

Cell layout shown is a flat single-layer grid for illustration — the final arrangement (stacked layers, offset rows, holder vs. shrink-wrap) is engineered to your enclosure. Dimensions and weight are estimates for a shrink-wrapped pack incl. BMS and nickel strips.

Request a quote

Your configured spec is attached below — add anything else we should know (discharge profile, enclosure limits, certifications) and we’ll reply within one business day.