Design a real battery.
With a conversation.

CellForge gives Claude and ChatGPT a real battery-design brain: cited electrochemistry, physics simulation, and safety-gated build guides — from the materials you can actually get, wherever you are.

Free for makers, forever. No app to install — it lives inside the AI you already use.

13

battery chemistries, every number cited — from salt-water sodium cells to LFP

Physics

real electrochemical simulation, not chatbot guesses — every result carries its error band

Safety-first

risk classes enforced in code: beginners are steered to safe aqueous chemistries, always

It learns

every validated community build calibrates the predictions for the next builder

How it works

Three steps between an idea and a battery on your bench.

1

Tell it what you need

“I want to store solar power for lights overnight — I have zinc roofing sheet, charcoal, and salt.” It asks the right questions and sizes the whole system, solar panel included.

2

Compare & simulate

It proposes design options, runs physics simulations, projects lifetime and cost, and renders an interactive design studio so you can see the tradeoffs.

3

Build, test, report

You get a step-by-step build sheet — safety briefing first. Test your cell with a multimeter, report the numbers, and make the engine smarter for everyone.

Install in two minutes

CellForge is an MCP server — a tool your AI assistant connects to. Nothing to download.

  1. Open Claude (web or desktop) → Settings → Connectors
  2. Choose Add custom connector
  3. Paste the CellForge address: https://cellforge.jlanka.com/mcp
  4. For Authentication, select Bearer Token and paste your token.
  5. Start a chat and say: “Help me design a battery.”
  1. Open ChatGPT → Settings → Connectors / Apps
  2. Choose Add MCP server (available on plans with connector support)
  3. Paste the CellForge address: https://cellforge.jlanka.com/mcp
  4. For Authentication, select Bearer Token and paste your token.
  5. Start a chat and say: “Help me design a battery.”

Authentication

To use the CellForge API, you need a Bearer Token. Please email [email protected] with your details to request a token. We will provide you with a token that you can use for free.

No paywall. No subscription. Just proof of work.

There is nothing to buy here. Everything a maker needs is free forever, and the advanced tier is unlocked one way only: by building real batteries and sharing validated results.

Maker · free forever
$0 — always
  • Full guided design loop & build sheets
  • All safety features, always
  • System designer, simulations & the design studio
  • Share designs & studios
Builder · earned only
unlocked by credits
  • Batch & sweep simulations (temperature, rate, geometry)
  • Personal model fitting — the engine tuned to your cells
  • Full data export, lab-report PDFs, priority compute
  • Early access to new chemistries & research tooling
Lab · schools & communities
partnership
  • Classroom packs & team workspaces
  • A class that builds together earns together
  • Free for education programs at launch

Credits never expire, are never for sale, are not transferable, and will never convert to cash — by design.

How you earn

Indicative launch values — tuned with the community as it grows. Every earning event requires validation first.

+50

Validated build report

Test your own build with a multimeter and submit complete measurements.

+75

Replication

Independently rebuild someone else's published design and confirm its numbers.

+100

First of its kind

The first verified build of a previously untested design.

+20

Ground truth

Verified regional material sourcing intel or reviewed translations.

What your credits unlock

Advanced capability for people who've proven they build.

Sweep simulations

One request, a whole map: capacity vs. temperature, rate, electrode thickness.

Your cells, modeled

The engine fits its model to your measured builds.

Degradation deep-runs

Physics-based aging simulation over thousands of virtual cycles.

Novel-material screening

Batch evaluation of candidate electrode materials with ML interatomic potentials.

Lab reports & export

Publication-ready PDF reports and full CSV data export.

Priority compute

Your jobs jump the queue, with bigger batch quotas and longer simulation budgets.

A community that proves its batteries

Every design here was built by someone, measured with a multimeter, and validated before publication.

Build

from a safety-gated design sheet

Measure

capacity, voltage, resistance

Validate

automated plausibility checks

Replicate

a second build confirms it

Everyone gains

predictions get calibrated

Every design is forkable

Pull any published design straight into your own session and keep developing it — or copy a portable design card between chats, AI clients, or servers.