See how your battery design performs before building a prototype.
Instantly simulate how chemistry, form-factor, thickness or N/P ratio affect battery performance — with metrics you can trust.
Get started with free access to the Molicel P45B cell design parameters.

Simply fill out the form to receive instant access to Breathe Design.

Simulate instantly: Turn design parameters like chemistry, form factor, or electrode thickness into virtual cells.

See performance shifts: Adjust variables such as N/P ratio and immediately visualize the impact.
Test before you build: Explore runtime, fast charging, ageing, and thermal effects without a prototype.
System-ready: Virtual cells plug straight into system-level simulations and Breathe Model.
Python-powered: A simple, flexible API that fits into your workflow.
AI-compatible: Built on Python, making it easy to leverage cutting-edge AI coding tools.

You can find a quick set-up guide here.

Requirements:

Python 3.11 or newer

Optional:

MATLAB, Simulink & Simscape version R2023b or newer for linking with Breathe Model.

Features:

Python API
Access to the Molicel P45B cell design parameters
Change chemistry, form factor, and electrode design
Predict static equilibrium performance of new designs
Perform dynamic simulations, such as pulse and discharge simulations of new designs
Export designs into Breathe Model to continue simulations in Simulink, building up system-level context
Expertly parameterised
Instant access to key battery states
Out-of-the-box worked examples