lemonergy/ data

02 / Lemonergy Data · API

The same records, from your own tools.

Search products, retrieve the complete record with its conditions and sources, compare cells on a mission. Every response names the catalog release it came from.

Inspect a live response →

Built for integration

A small, predictable API.

Search products. Retrieve the complete record. Keep the source context in your own application.

Try it with no key: https://design.lemonergy.com/api/data/demo/v1/batteries?q=21700, or a comparison: …/demo/v1/compare?products=cell/molicel/inr21700-p50b,cell/samsung-sdi/inr21700-50e&mission=evtol-hop. With a key the base URL is https://design.lemonergy.com/api/data/v1 and the key goes in the X-API-Key header, on your server. Create keys after signing in on Lemonergy Design: Account → Data API. Every response names the catalog release it came from, so you can tell when the data moved.

Inspect a live response
GET/api/data/v1/batteries

Search battery cells, modules, packs and systems. Also on the demo base URL.

GET/api/data/v1/products/{uid}

Full specifications, conditions and source evidence. Also on the demo base URL.

GET/api/data/v1/products

Filter the accepted catalog by model, manufacturer or measurement.

GET/api/data/v1/compare

Several cells side by side from their datasheets and, with mission=, the same mission run for each. One request per cell. Also on the demo base URL.

GET/api/data/v1/missions

The mission library: eVTOL hop, drone mission, WLTP cycle, ESS day and more.

GET/api/data/v1/manufacturers

Manufacturers and accepted product counts.

GET/api/data/v1/components

Electrical components as they enter the accepted library.

GET/api/data/v1/usage

Current usage and your remaining request allowance. Not counted against the month.

Start where you are. Move up when it earns it.

From exploration to production.

The demo needs nothing. A free key removes the hourly cap. The paid plan is for code that runs every day.

Monthly plans · EUR
Try the live API

Demo

€0/ no account

The live API demo. Same catalog, same responses, nothing to sign.

  • 40 requests / hour
  • 5 results per request
  • Compare up to 3 cells on a mission
  • Complete records, with conditions and sources
  • Callable from your terminal too
Search the catalog

The cap is per hour and resets on the hour.

Build your integration

Free key

€0/ month

Enough to write the integration and prove it works.

  • 100 requests / month
  • 10 requests / minute
  • Every match, full pagination
  • Compare up to 8 cells, 10 passes of a mission
  • Private keys you create and revoke
Create a free key

Sign in, then Account → Data API.

For daily use
Run it in production

Data API

€9/ month

For tools that query battery specifications as part of the working day.

  • 10,000 requests / month
  • 60 requests / minute
  • Everything in the free key
  • The same keys keep working
  • Usage and key controls in your account
Request API access

No payment is taken on this page. Lemonergy records your access after payment; your keys stay the same.

One Lemonergy membership

With Design

Included

Already paying for Design? Your Data API access comes with it.

  • 10,000 requests / month
  • 60 requests / minute
  • The paid Data API allowance
  • No separate API subscription
  • Other Lemonergy areas included
Explore Lemonergy Design

Included with an active paid subscription.

Account allowances are shared across your keys and reset at 00:00 UTC on the first day of each month. Failed queries never use allowance. The demo is capped per caller per hour. Trial and complimentary Design access use the free key allowance.

Something missing?

Tell us which cell you need.

The catalog grows from real engineering questions. Send the manufacturer and model, or the datasheet, and it joins the review queue with its conditions and sources intact.

Request a model