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Which Vehicles Does Stekker Support?

  • By Stekker Support
Overview of vehicle brands with direct integration and how Stekker works with any electric vehicle, even without a vehicle connection.

Smart charging works with any electric vehicle

Stekker communicates with the charge point, not the car. Any electric vehicle that charges via a supported charge point automatically benefits from smart charging — regardless of brand or model. Optimization is based on meter data from the charge point, energy prices and grid capacity.

Vehicle integration for additional features

For several brands, Stekker offers a direct connection with the vehicle via the manufacturer’s API. This provides additional data that makes charging planning more accurate.

Tesla

  • Connection via the Tesla Fleet API (OAuth authorization from the Stekker app)
  • Read battery level (state of charge) and charge limit
  • Location detection — Stekker can determine whether the car is at the charge point
  • Automatic battery level retrieval at session start
  • Real-time charging status (charging/not charging)

Tesla vehicles have the most complete integration. The location feature makes it possible to automatically activate smart charging as soon as the car arrives.

Volkswagen, Audi and Skoda

  • Connection via the WeConnect API (sign in with your Volkswagen/Audi/Skoda ID)
  • Read battery level and charge limit
  • Automatic battery level retrieval at session start
  • Real-time charging status

Kia and Hyundai

  • Connection via the UVO/Bluelink API (sign in with your Kia/Hyundai account)
  • Read battery level
  • Automatic battery level retrieval at session start

What does vehicle integration offer?

The main benefit of a vehicle connection is a more accurate battery level. Without a connection, Stekker estimates the battery level based on meter data from the charge point. With a connection, Stekker retrieves the actual percentage directly from the vehicle. This results in:

  • More accurate charging planning — Stekker knows exactly how much energy is still needed
  • Better charging time estimates — especially relevant for time-bound targets (departure at 07:00)
  • Battery status visibility — the battery level is visible in the dashboard

Vehicles without a connection

No connection? No problem. Stekker works perfectly fine without a vehicle connection:

  • The battery level is estimated from charge point meter data
  • All optimization features (price optimization, capacity management, solar steering) remain available
  • After approximately ten charging sessions, the estimate becomes increasingly accurate through machine learning
  • You can manually set a battery target in the app

Vehicle integration is a bonus, not a requirement. The core of smart charging — optimizing when and how much energy is delivered — runs on charge point data.

Platform responsiveness

Electric vehicles respond differently to charging commands. Some platforms stop communicating sooner after parking than others. Stekker accounts for this in its charging planning. Here are the known timeouts per vehicle platform:

  • BYD e-Platform 3.0 — approximately 2 hours
  • Volkswagen MEB (ID.3, ID.4, ID.5 etc.) — approximately 4 hours
  • Audi PPE (Q6 e-tron etc.) — approximately 3 hours
  • Hyundai/Kia E-GMP (IONIQ 5, EV6 etc.) — approximately 4 hours
  • Geely SEA (Volvo EX30, Polestar 4 etc.) — approximately 5 hours
  • Tesla Model 3 and Model Y — approximately 8 hours

This does not mean charging stops after this time. It means Stekker can less reliably adjust the charging rate after this period, because the vehicle is no longer actively communicating with the charge point. The charging session continues normally.

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