REFU 418

Compact, liquid-cooled all-in-one AC energy storage system

Capacity
418 kWh
AC power
215 kW
Cycles
8,000
Request a projectDatasheet (PDF) – DE
REFU 418

At a glance

376 kWh

Usable capacity

LFP

Battery chemistry

Lithium iron phosphate

800 V

Rated voltage

≥ 90 %

Max. system efficiency

IP54

Protection rating

Corrosion protection C4

Liquid + air

Cooling

Liquid cooling and air cooling

Overview

The REFU 418 is a compact, liquid-cooled all-in-one energy storage system for commercial and industrial applications. Pack-level liquid cooling with active temperature balancing keeps cell temperatures even and so contributes to a longer battery life. The modular design allows flexible parallel configurations. Storage and PV plant can be controlled and monitored centrally with REFUlink.

Performance & efficiency

  • Pack-level liquid cooling
  • Active temperature balancing (≤ 3 °C)
  • Efficient cooling with low self-consumption

Installation & expansion

  • Compact design for easy transport
  • Quick installation on site
  • Modular design for parallel expansion

Safety & reliability

  • LFP battery chemistry
  • In-pack fire detection with aerosol fire suppression
  • IP54 protection, C4 corrosion protection

Controlled with REFUlink

  • Control and monitor storage and PV plant centrally
  • Connection via Ethernet, RS485 and Modbus TCP/IP

Your benefit as …

Operators & investors

  • Real-time monitoring with REFUview

    REFUview shows the status, output and yield of your PV plant in real time, on your computer and on your smartphone. Spot deviations early and protect your yield.

  • Data hosting in Germany

    Your plant data is hosted and processed in Germany. This makes data protection and data sovereignty easier, especially for operators of critical infrastructure.

  • Technical support from Germany

    For questions about operation, faults or firmware updates, you can reach our technical support in Germany, personally and without detours.

EPCs & general contractors

  • Datasheets, certificates and manuals in the download centre

    Datasheets, unit certificates, declarations of conformity and manuals are all in one place in the download centre, always in the current version.

  • Personal contacts in sales and engineering

    For system design, quotations and detailed technical questions, you talk directly to our sales team and our engineers, including for large solar parks.

  • Scalable with REFUlink and REFUview

    REFUlink connects up to 60 inverters to the control room and the grid operator, while REFUview brings all operating data together. The system grows with your plant.

Installers & electrical contractors

  • Easy commissioning

    Many models can be set up via app over Bluetooth directly at the inverter. This saves time when commissioning on commercial rooftops.

  • Technical support from Germany

    For questions about installation, settings or error messages, you can reach our technical support in Germany, personally and without detours.

  • Fits new and existing systems

    REFUsol inverters can be integrated into new and existing PV plants, and via REFUlink also together with older generations of REFU inverters.

Planners & engineers

  • Unit certificates and declarations of conformity in the download centre

    Download the evidence you need for plant design, such as unit certificates to VDE-AR-N 4105 and 4110 or EN 50549, directly and without a request.

  • Complete technical data for comparison

    Every product page shows all values from the datasheet, from the MPPT voltage range to the overvoltage category, clearly arranged by group.

  • Direct contact with engineering

    For detailed questions on grid protection, reactive power or plant control, talk directly to our engineers, without detours.

Technical data

Datasheet (PDF) – DE

Battery data

Storage capacity418 kWh
Usable capacity376 kWh
Battery chemistryLFP (lithium iron phosphate)
Cell specification314 Ah
Battery configuration1P52S
Max. charge/discharge rate0,5P

AC data

Rated output power215 kW
Rated voltage800 V
Rated current180 A
Nominal grid frequency50 / 60 Hz

Performance & reliability

Max. system efficiency≥ 90 %
Cycle life8,000 cycles at 25 °C, 80 % DoD

Safety & protection

Fire suppression systemAerosol
Protection ratingIP54
CoolingLiquid cooling + air cooling
Corrosion protection classC4

Communication

EthernetYes
RS485Yes
Modbus TCP/IPYes

General data

Operating temperature−25 to +55 °C (derating above 45 °C)
Permissible humidity range0–95 %
Max. installation altitude≤ 3,000 m
Dimensions (W × D × H)1,600 × 1,660 × 2,350 mm
Weight4,000 kg

Certification & compliance

StandardsUN38.3, UN3480, IEC 61000, IEC 62619, IEC 62477

Data as of: 2 November 2026WEEE-Reg.-Nr. DE35952985Preliminary data based on the preliminary datasheetSubject to technical changes

Downloads

  • Datasheet REFU 418 – REFU 418German, As of 11/2026, Version vorläufig, PDF, 2.3 MB
    German

Discuss your project

Which model suits your storage project? We advise you personally, directly with our engineers.

Or directly+49 7121 145 1888info@refu.com

Request a project