VDA 355 vs MEB 590: Which Battery Module Format Fits Your Pack?
Short answer: The VDA 355 module measures approximately 355 × 151 × 108 mm and suits compact or modular pack architectures. The MEB 590 module measures approximately 590 × 225 × 108 mm and offers higher energy per module. The better choice depends on your pack envelope, cell configuration and thermal management design — not on which format is inherently superior.
Pack integrators working with prismatic lithium modules regularly face the same structural decision early in a project: size the pack around a smaller, more flexible module or commit to a larger format that delivers more energy per unit. The VDA 355 and MEB 590 are the two standardised formats most commonly available in the European market. Understanding precisely where they differ — and where the choice is driven by pack architecture rather than by the modules themselves — prevents costly re-design later.
What the two formats are
A VDA 355 module is a standardised prismatic battery module with a nominal length of 355 mm, developed under the German automotive industry association (VDA) so that modules from different cell suppliers share a common mechanical envelope, cooling interface and busbar layout. This interchangeability was the original design goal: a pack architecture built around the VDA 355 envelope can be refilled by a different supplier without structural rework.
The MEB 590 module is the larger format associated with Volkswagen's Modular Electric Drive (MEB) platform. At roughly 590 mm in length, it accommodates more cells in a single housing and is used both in MEB-platform passenger vehicles and, increasingly, in stationary storage systems where the same mechanical standardisation suits rack and cabinet assemblies.
For background on how prismatic automotive module formats developed, the history of prismatic automotive battery cells traces the engineering decisions that produced both formats.
Side-by-side specification comparison
| Parameter | VDA 355 | MEB 590 |
|---|---|---|
| Nominal length | ~355 mm | ~590 mm |
| Width | ~151 mm | ~225 mm |
| Height | ~108 mm | ~108 mm |
| Typical cell configurations | 1P4S, 2P6S, 3P4S, 1P12S | 2P8S, 2P12S (varies by cell supplier) |
| Chemistry options | LFP, NCM | LFP, NCM |
| Typical energy content (LFP) | ~2–5 kWh depending on configuration | ~5–10 kWh depending on configuration |
| Typical nominal voltage | ~12–44 V (configuration-dependent) | ~25–45 V (configuration-dependent) |
| Primary automotive application | Compact EVs, commercial vehicles, mild-hybrid architectures | MEB-platform passenger EVs, light commercial |
| Stationary storage use | Yes — growing second-life and purpose-built | Yes — increasingly common in cabinet systems |
| Module interchangeability | High: multiple cell suppliers, shared envelope | Moderate: format tied more closely to MEB-derived supply chains |
Note on energy figures: energy content varies significantly with cell chemistry, cell capacity and configuration. The ranges above reflect what is currently available in the market; verify exact figures against supplier datasheets before committing to a pack design. VDA and MEB battery modules from Avantis Energy lists current configurations with confirmed specifications.
Where the formats genuinely differ
Physical envelope and pack density
The MEB 590 is longer and wider, which gives it a larger footprint per module but a slightly lower height. In a flat floor pack — the layout used in most purpose-built EV platforms — the MEB 590's geometry can achieve competitive volumetric energy density because fewer inter-module gaps are required. In a narrower or segmented enclosure, the VDA 355's smaller footprint allows more granular arrangement and easier thermal management routing.
Cell configuration flexibility
The VDA 355 format supports a broader published range of configurations — 1P4S through to 1P12S — which gives integrators more control over nominal voltage without changing the mechanical interface. The MEB 590's configurations are less varied in the open market, partly because the format was optimised for a specific platform voltage window.
Supply chain depth
Because the VDA 355 format was standardised earlier and more openly, more cell suppliers produce cells dimensioned for it. This matters for long-term procurement risk. The MEB 590 format has a narrower supplier base, though that base has widened as stationary storage demand has grown. The advantages of the VDA 355 format covers this supply-chain argument in more detail.
Application fit
For automotive pack integration, the right format is usually determined by the vehicle platform before any module selection conversation begins. If you are integrating into an existing MEB-derived platform, the MEB 590 envelope is effectively a given. If you are designing a pack from scratch — for a special vehicle, a commercial application or a stationary system — both formats are legitimate starting points, and the decision comes down to pack voltage target, thermal budget and enclosure geometry.
For stationary storage, both formats are in active use. The IEA's analysis of battery storage deployment (iea.org) notes that second-life automotive modules are increasingly integrated into grid-scale and behind-the-meter systems, with standardised formats reducing integration cost. The MEB 590 is appearing in containerised storage because of the volume of MEB-platform vehicles entering service; the VDA 355 remains common in cabinet-scale systems where its smaller module size maps more cleanly to standard 19-inch rack enclosures.
When to choose the VDA 355
- Pack envelope constrains module length below 400 mm.
- You need granular voltage configuration (e.g. a 12 V or 24 V nominal module for non-automotive applications).
- Supply-chain diversification is a procurement requirement.
- The application is stationary storage in cabinet or rack format.
- You are working with LFP chemistry and want the widest cell supplier choice.
When to choose the MEB 590
- The vehicle platform is MEB-derived or mechanically compatible.
- Pack design targets maximum energy per module count rather than granular voltage steps.
- The enclosure has the floor space to accommodate the larger footprint.
- Second-life sourcing from MEB-platform vehicles is part of the procurement strategy.
For a fuller technical introduction to the MEB 590 format, the MEB 590 overview on this site covers the format's origins and integration characteristics.
A note on compliance
Neither the VDA 355 nor the MEB 590 format is itself a certification. Compliance obligations — UN 38.3 for transport (UNECE, unece.org), IEC 62619 for stationary storage safety (iec.ch) and the EU Battery Regulation 2023/1542 — apply to the module as a product, not to the dimensional format. Integrators should confirm that any module they source carries the relevant test documentation for its intended application, regardless of which format it uses.
Frequently asked questions
What are the main dimensional differences between the VDA 355 and MEB 590 modules?
The VDA 355 measures approximately 355 × 151 × 108 mm. The MEB 590 measures approximately 590 × 225 × 108 mm. The MEB 590 is substantially longer and wider at a comparable height. Both use prismatic cell housings within a standardised module envelope.
Does one format offer higher energy density than the other?
Not inherently. Energy content depends on cell chemistry, cell capacity and the number of cells in the module, not on the format alone. The MEB 590 typically delivers more energy per module because it physically accommodates more cells, but energy density per litre or per kilogram depends on the specific cell used.
Can both formats be used in stationary storage?
Yes. Both VDA 355 and MEB 590 modules are used in stationary storage applications. The VDA 355 maps more naturally to rack and cabinet enclosures; the MEB 590 is increasingly common in containerised systems, partly driven by second-life supply from MEB-platform vehicles.
Is the choice between formats driven by the module or by the pack design?
Largely by the pack design. If you are integrating into an existing vehicle platform, the format is usually fixed by that platform. If you are designing from scratch, the choice is determined by your enclosure geometry, target voltage, thermal architecture and procurement requirements — not by any intrinsic advantage of one format over the other.
Where can I source both formats with confirmed technical documentation?
Avantis Energy supplies both VDA 355 and MEB 590 modules from stock, with datasheets and compliance documentation. Current configurations and specifications are listed on the VDA and MEB battery modules page.
Specify your pack
If the comparison above has narrowed the format question but you still need to confirm configuration, voltage or thermal interface against your pack design, discuss your requirements with Avantis Energy — the team works with integrators at specification stage, not only at order stage.