ZBM2 - where power meets intelligence, delivering sustained energy storage from the world’s smallest zinc-bromine flow battery, monitored and managed online.

Rewriting battery rules. 100% storage. 100% available

Redflow’s ZBM2 battery is a unique energy storage system that redefines your understanding of how a battery works. This scalable 10 kilowatt-hour (kWh) zinc-bromine flow battery can deliver 100 per cent depth of discharge each day – without causing any damage to the battery.

High performance. At high temperatures

The ZBM2 performs flawlessly in warm climatic conditions without external cooling. Unlike legacy battery chemistries, the performance, safety and operational lifetime of the ZBM2 zinc-bromine flow battery is unaffected by ambient temperatures as warm as 50°C (122°F).

10-year Warranty

Redflow backs ZBM2 with a 10-year warranty (see full warranty for details).

Scalable storage. From one to dozens

The ZBM2 zinc-bromine flow battery is designed to work on its own and can also scale to work as part of a much larger energy storage system, with as many batteries as you require.  ZBM2s are easy to deploy in scalable parallel clusters for high availability, high scale deployments at the largest sites.

Internet-ready. For easy remote access

The ZBM2 battery management system (BMS) captures performance data in real-time to enable 24/7 remote monitoring. Monitor and manage your ZBM2 batteries from your computer or mobile phone, using easy web-based notifications and controls.

Environment-friendly battery. Fully recyclable

The ZBM2 zinc-bromine flow battery is made from easily recycled or reused components. At its end of life, the battery’s zinc bromide electrolyte solution can be purified and used for new batteries.

Safe energy storage. Wherever you need it

ZBM2s are intrinsically safe devices, even when used in the most demanding locations. The temperature-tolerant zinc-bromine flow battery contains an inherently non-flammable electrolyte solution, with a design that means there’s no chance of ‘thermal runaway’.

Simple. One-step charging

Using 100 per cent of its 10 kWh energy storage capacity, Redflow’s ZBM2 zinc-bromine flow battery delivers a constant power supply, due to a flat voltage curve and simple one-stage charge profile.

Standby for years. Start in seconds

The ZBM2 zinc-bromine flow battery can be stored at any state of charge – from full to empty – for weeks, months or even years. When you need power, the ZBM2’s Standby Power System (SPS) can start the battery in seconds, ready to deliver its stored energy. Please contact Redflow for further details on this option.

Redflow. Redefines the battery

Redflow’s zinc-bromine flow battery redefines your understanding of how a battery works. With 100 per cent depth of discharge daily, the ZBM2 delivers a sustained 10kWh of energy storage capacity throughout its operating life.

ZBM2 Technical Specifications

Voltage

  • 48 Volt DC nominal batteries (typical operating range 40-60V)

Capacity

  • Maximum 10kWh energy output per daily cycle
  • No reserved battery capacity requirement – full 10kWh cycle depth available

Dimensions

  • 845 L x 823 H x 400 W (mm)
  • 33 L x 32 H x 16 W (in)

Weight

  • 240 kg (530 lb) with electrolyte
  • 90 kg (198 lb) without electrolyte

Electrolyte volume

  • 100 L (26Gal)

Energy efficiency

  • 80% DC-DC Max

Internal (electrolyte) operating temperature

  • Operating electrolyte temperature range of 15°C to 50°C (59°F to 122°F), ZBM2 can typically operate at ambient temperatures outside this range for extended periodsE

Communication

  • MODBUS RS485

Safety data sheet

  • DG Class 8 for electrolyte 

Power rating

  • 3kW (5kW peak)
  • 3kW continuous: current up to 75A (40V disconnection point) *1
  • 5kW duration depending on the State of Charge (SOC): current up to 125A (40V disconnection point) *1, 2

Regulatory compliance marks

  • CE and RCM

Warranty

  • Redflow backs ZBM2 with a 10-year warranty (see full warranty for details).

* 1 Values reported for ZBM2 at 100% state of health (SOH) and room temperature
* 2 Redflow internal testing shows a 5kW supply for approximately 45 minutes before disconnection, for a ZBM2 starting at 100% state of charge (SOC)

More resources

ZBM2 case studies and technical documents

Document nameDescriptionIssue date
Case study: Knox Children and Family CentresKnox children centres cut 75% of energy costs in winter with solar PV and Redflow battery storage (Melbourne, Victoria)August 2019
Case study: Williams Burton LeopardiDarling Building beats energy shortfall with Redflow (Adelaide, South Australia)August 2018
Case study: Mossel Bay MunicipalityMossel Bay goes carbon neutral with Redflow (South Africa)January 2018
Case study: Bosco Printed CircuitsBosco beats power cuts with Redflow batteries (Johannesburg, South Africa)September 2017
Case study: Simon HackettHackett house powers through SA blackout (Adelaide, South Australia)September 2016
Redflow ZBM2 Battery WarrantyRedflow ZBM2 Battery WarrantyJuly 2019
Redflow Battery Enclosure WarrantyRedflow Battery Enclosure WarrantyJuly 2019
Redflow BMS WarrantyRedflow BMS (Battery Management System) WarrantyJuly 2019
ZBM2 and ZCell FAQAnswers to frequently-asked questions about Redflow batteriesOctober 2017
Optimal applications for the Redflow batteryOptimal Applications for the Redflow BatteryDecember 2018
ZBM2 DatasheetSpecifications and benefits of Redflow's ZBM2 zinc-bromine flow batteryNovember 2017
ZBM2 Installation ManualRedflow ZBM2 (3kW/10kWh) Installation and Operation Manual V4.0July 2019
ZBM2 CE CertificateEC Declaration of ConformityMay 2018
LSB (Large Scale Battery)Learn about Redflow's LSB (Large Scale Battery) which holds at many as 450 kilowatt-hours of energy