Problem

Battery R&D is expensive, slow, and difficult to scale because companies still rely heavily on physical experiments. Y Combinator says a battery company can spend tens of millions of dollars annually on experiments, while simulations that could replace some of that work remain underused because they are difficult to create and operate. Ionworks targets the operational bottleneck behind simulation: connecting scattered cycling data to validated model parameters is manual and error-prone.

The central use case is virtual battery prototyping. Engineers can test how electrode thickness, porosity, loading, geometry, or charging strategy affect performance, degradation, cycle life, and safety constraints before building more cells. Ionworks positions this as replacing months of cycler campaigns with simulation studies that answer the same engineering questions in hours, reducing physical builds and helping teams make design decisions earlier.

Product / Service

Ionworks is a commercial battery-simulation platform and services business built on PyBaMM, the open-source battery-modeling framework created by members of the Ionworks team. Its Studio product provides a browser interface for ingesting and normalizing data from major battery cyclers, tracking parameterization, running electrochemical and thermal simulations, organizing studies, and reviewing results. Engineers can also use the REST API and Python SDK, allowing modelers, internal software systems, and AI agents to operate the same workflows programmatically.

The product turns raw measurements, cell specifications, model parameters, and simulation results into reusable, versioned, traceable objects. Teams can fit and validate models against experimental data, run protocol-driven studies, and optimize designs against targets such as energy density, charge time, cycle life, thermal headroom, and plating limits. Ionworks also offers fixed-scope consulting for parameterization, degradation modeling, custom chemistry models, and optimization, with deliverables retained by the customer.

Market

Ionworks competes in battery simulation software, virtual prototyping, and the emerging category of production platforms for battery R&D. More specifically, it targets cell-level electrochemical modeling, parameter estimation, degradation analysis, and physics-based design optimization for teams that have outgrown notebook-based PyBaMM workflows but do not want to give up PyBaMM's open foundation. Its named competitors include broad multiphysics platforms such as Ansys, COMSOL, and Siemens, cell-to-system tools such as Gamma Technologies, and PyBaMM itself; Ionworks differentiates through a shared GUI, structured data layer, parameterization workflow, collaboration, and reproducibility.

The company shows early commercial traction rather than evidence of scaled revenue. Y Combinator lists Ionworks as founded in 2023, a Summer 2024 company, active, and a five-person team; the company also describes its offering as battery-simulation-as-a-service and says its software is used by leading battery and automotive companies. A collaboration with NOVONIX Battery Technology Solutions provides concrete partner and customer evidence, including a testimonial that Ionworks supports faster development and more predictable outcomes. The available evidence does not establish a reliable reported revenue figure: PitchBook reports $500,000 raised, while an earlier Ionworks post described the company as focused on early customer contracts, so Ionworks is best characterized as an early-stage commercial vendor with initial traction and undisclosed revenue.