Battery Platform

The Ambri battery platform is a ready-to-install DC containerized system, complete with shelves of cells, thermal management, weatherproof outer enclosure, and a battery management system (BMS) for applications that require high energy capacity, frequent cycling, long life and high efficiency.

Cells are assembled onto trays and connected within a thermal enclosure to form a MWh-scale system, which is then coupled to the grid using standard industrial DC-AC bi-directional inverters. The system is insulated and “self-heating” when cycled daily, requiring no external heating/cooling to keep the batteries at operating temperature. Multiple systems are placed together on site are connected in parallel in a daisy chain fashion, eliminating costly trenching and cable runs, enabling unlimited upward scalability for large-scale projects.

System Features



  • Calcium & antimony electrodes
  • Calcium-chloride salt electrolyte
  • Commercial grade materials
  • Calcium is the 5th most abundant element in Earth’s crust


  • Stainless steel construction
  • ~1 kWh per cell
  • Certified to UL 1973 and UL9540a
  • 0.55 – 1.1V voltage profile at operating temperature
tray cells

Tray of Cells

  • Modular shelf of cells with cell management system
  • Each cell voltage and tray temperature data acquisition
  • Embedded heating element

DC-BESS Enclosure

  • 20’ ISO high-cube customized enclosure
  • Insulation layer on interior walls of container retains heat
  • Integrated BMS and zone controller
  • Daisy-chained power and signal connections between enclosures minimizes EPC work
  • Safe-to-touch exterior walls of container

System Energy Block

  • Stackable containers
  • Stacking provides high battery container footprint density: 14 kWh/ft2 or 154 kWh/m2
  • Compatible with commercially available PCS options

Modular System

  • 100 MW, 400 MWh Layout
  • 396 system containerss
  • 108 MW total
  • 454 MWh
  • 10,000 square meters, 2.5 acres — including roads


  • Ambri batteries are responsibly produced and their materials can be reused
  • The salt electrolyte within the Ambri cells is dissolved in water
  • Both stainless steel and antimony are easily collected and recyclable

Our Chemistry

Chemistry Image

Ambri Advantage

Ambri’s Liquid MetalTM battery technology solves the world’s biggest energy problems – fundamentally changing the way power grids operate by increasing the contribution from renewable resources and reducing the need to build traditional power plants.

Ambri cells utilize commonly available electrode materials that cost significantly less than those in lithium-ion cells. The manufacturing of Ambri cells is far simpler and requires less capital per MWh of production than lithium-ion. Furthermore, Ambri-based systems do not require the extensive cooling, fire suppression or explosion prevention equipment as lithium-ion systems require. For these reasons, long duration Ambri-based battery systems are a fraction of the cost of lithium-ion when comparing 20-year, long duration systems.

Expect tens of thousands of cycles and decades of operation without the degradation experienced by other battery chemistries.

On site installation of pre-fabricated Ambri-based systems are more rapidly deployed than today’s energy storage technologies that require on-site system assembly. For GWh-sized deployments, Ambri-based 1-MWh systems are modular and scalable to meet demand.

Ambri battery cells are highly tolerant of over-charging or over-discharging, and are not subject to thermal runaway, electrolyte decomposition, or electrolyte off-gassing, each of which could lead to significant safety events with other cell chemistries.

Ambri batteries are responsibly produced and their materials can be reused. Ambri systems are made with commonly available and low toxicity materials that are easily recyclable.