Aquion is changing the way the world uses energy by delivering stationary energy storage systems that are high performance, safe, sustainable, and cost-effective. Their batteries are engineered and manufactured in the USA, with research stationed at Carnegie Mellon University.

Aquion S20, S30

Based on Aquion’s proprietary Aqueous Hybrid Ion (AHI™) technology, S-Line products are clean saltwater batteries that outperform and outlast traditional battery chemistries. AHI batteries contain no heavy metals or toxic chemicals and are non-flammable and non-explosive, making them the safest batteries in the world and ideal for use in pristine environments, island locations, and businesses.

The Aquion Energy S20 and S20-P are the first batteries in the world to be Cradle to Cradle Certified™ Bronze, an esteemed quality mark recognized across industries to provide a continuous improvement pathway toward the development of sustainable products. The batteries are listed on the Cradle to Cradle Certified™ product registry at

S-Line Battery Stacks for Stationary, Long-Duration Applications

Aquion’s flagship S-Line products serve as the fundamental building blocks for all Aqueous Hybrid Ion (AHI™) battery systems.

Aquion S20 S30 S-Line Battery Module

Scalable Power Solution

S-Line Battery Stacks are ~2 kWh systems at 48V nominal and can be connected in series or parallel for a wide range of system configurations. The S-Line Battery Stacks serve as the fundamental building block for M-Line Battery Modules and all AHI systems.

S-Line products deliver robust field performance, excellent abuse tolerance, and hassle-free operation. The batteries are designed for stationary long-duration daily cycling applications including commercial solar, off-grid and microgrids, energy management and grid-scale services.

Key Battery Characteristics

    High Performance: Avoid costly downtime and battery replacements

  • Very high cycle life
  • Usable depth of discharge (DoD): 100%
  • Extremely abuse tolerant
  • Ability to stand at partial state of charge
  • Wide operating temperature range
  • Minimal degradation
  • Unparalleled Safety: Inherently safe chemistry

  • Not flammable, explosive, or corrosive
  • No dangerous or toxic components
  • Sustainable: Simple, abundant, nontoxic materials

  • Environmentally benign materials
  • No corrosive acids or noxious fumes
  • Suitable for deployment globally
  • Excellent Economics: Industry-leading total cost of ownership

  • Low acquisition costs ($/kWh)
  • Better value than lead acid or lithium ion
  • No regular maintenance
  • No thermal management
  • No active management required
  • * Information subject to change without notice.

aquion energy s20 s30 battery for solar panels for homes
aquion battery environmentaly friendly nontoxic clean

Flexible. Durable. Environmentally Friendly.

Aquion’s technology is based on a simple idea: In order to meet the challenges of the world’s growing energy needs and increase the use of renewable power, we need large-scale energy storage systems that are high performance, safe, sustainable and cost-effective. The company founder, Professor Jay Whitacre, set out to solve this problem and discovered a simple and elegant solution that is a twist on a 200 year-old technology: saltwater batteries. Aquion developed this solution into our patented Aqueous Hybrid Ion (AHI™) chemistry, a unique saltwater electrolyte battery technology. Using abundant, nontoxic materials and modern low cost manufacturing techniques, our AHI batteries are now ready to take on the global energy storage challenge.