Build Your Custom Battery
Configure cell type, series/parallel layout, and customize each row independently. Toggle offset rows for honeycomb packing.
Autosave is on — this browser remembers your last design.
Cell Selection
Choose your battery cell type
Configuration
10S3P · 30 cellsControls voltage output
Controls capacity
Pack Geometry
Cell size & layout pattern
Rank & File — cells aligned in a regular grid
Row Layout
Configure cells per row — rows can have different amounts
BMS Selection
Battery Management System
2D Preview
Drag any cell freely · snaps to grid
Live Specifications
10S3P — 30 cells
Over-voltage protection · Under-voltage protection · Over-temp protection
Performance analysis is a Pro feature
See voltage sag, continuous power limits and application suitability at your real load.
Unlock with Pro — $9/moThermal simulation is a Pro feature
Model cell surface temperature at any discharge current and catch a build that runs too hot.
Unlock with Pro — $9/moThe busbar advisor is a Pro feature
Size nickel strip and busbars for your series interconnects, with current capacity per weld.
Unlock with Pro — $9/moCase Editor
Define your enclosure — see if the pack fits
Preset Enclosures
Inner Cavity Dimensions
Padding reserves space on all sides for wiring, BMS, and assembly clearance.
Fit Analysis — Pack vs Available Space