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Aquion 48M-25.9 battery specifications
Aquion Energy Model Number Aspen 48M-25.9
Nominal Battery Voltage 48 Volts
Nominal Capacity 25.9 kWHr
(20 hr. rate)
Cycle Life 3,000 Cycles
(to 70% retained capacity)
Voltage Range 40.0-59.5 Volts
Peak Power 11.7 kW
Height 45.6 in.
Width 52.0 in.
Depth 40.0 in.
Weight 3,315 lbs.

Aquion Energy Aspen 48M-25.9 AHI Battery Bank

SKU 48M-25.9
Aquion Energy logo

Aquion Energy emerged from Chapter 11 US Bankruptcy Protection
and will be releasing a new product once restructuring is complete and new battery chemistry has been perfected.


Aquion Energy Aspen 48M-25.9 Saltwater Battery Bank

Aquion Energy’s Aspen 48M-25.9 battery bank is a 48 volt modular building block for clean energy storage systems.

The Aspen 48M is comprised of twelve Aspen 48S-2.2 batteries connected in parallel and comes pre-wired as a plug-and-play battery bank.

Based on Aquion’s safe, clean, and sustainable Aqueous Hybrid Ion (AHI™) technology, the Aspen 48S-2.2 batteries within the 48M-25.9 battery bank are engineered to meet Cradle to Cradle certification standards. Designed for years of hassle-free operation in stationary, long-duration applications, AHI batteries are optimized for storing energy for residential, industrial or commercial off-grid, and microgrid applications. The Aspen 48M-25.9 Battery Bank delivers an unmatched combination of performance, safety, and environmental sustainability in a cost-effective battery solution.

large quantity Aquion batteries
Aquion Aspen 48M-25.9 battery banks are made in the USA and available in large or small quantities at a low wholesale price. Contact us

Aquion 48M-25.9 Benefits


  • Avoid costly downtime and battery replacements
  • Tolerant to high ambient temperatures
  • 100% DoD cycling with minimal degradation
  • Self-balancing, minimal self-discharge, and no trickle charge required
  • High tolerance to long stands at partial state of charge (PSOC)

Safe and Non-toxic

  • Safe to handle, ship, and operate
  • Non-flammable, non-toxic, and non-explosive
  • No dangerous or catastrophic failure modes
  • Eliminates high concentrations of toxic or flammable materials, critically important for large scale urban installations

Cost Effective

tower mounted Aquion energy storage system Aquion AHI battery banks are a superior replacement to lead-acid based technologies in most industrial energy storage applications.

  • Excellent calendar and cycle life
  • No thermal management or active battery management system required
  • Straightforward site preparation and installation
  • Simple system operation
  • Minimal system maintenance


  • Environmentally friendly
  • No hazardous or toxic materials
  • Recyclable and land-fill safe
  • Cradle to Cradle Certified™ Bronze

The Aquion 48M-25.9 battery is very robust in a partial state-of-charge cycling state and a wide range of ambient temperatures. Aspen batteries are ideal for energy storage applications that limit the life, performance, or safety of traditional battery technologies.

Aquion Aspen 48M-25.9 Battery Review


utility grid load balancing
Aquion 48M battery banks are ideal for utility grid-tie
backup systems and load balancing.

Aquion Aspen 48M-25.9 Saltwater Battery Bank Battery Review

Aquion’s Aspen 48M-25.9 plug-and-play battery bank is simple to configure and install and requires no maintenance. The batteries used in this complete battery bank are abuse tolerant and can handle wide temperature ranges. I can be left at partial states of charge without degradation and sulfation.

Thousands of cycles and deep cycling capability means greater usable energy which results in competitive up-front costs and little or no maintenance costs. The combination of performance, affordability, safety, ease of use, and sustainability makes the Aquion Aspen 48M-25.9 battery ideal for solar energy and other energy storage systems.

The Aquion Aspen batteries used in the 48M are the first and only in the world to be Cradle to Cradle Certified™, an esteemed quality mark for products made from sustainable materials and manufacturing processes. The batteries are elgible for LEED Credits and feature a full LEED Material Ingredient Disclosure.

Learn more about Aquion battery technology.

hybrid microgrid battery module system

With decades of experience, Solar Electric Supply has the friendly, knowledgeable staff for just about any large energy storage system project.

Contact us for expert energy storage system design.


This AHI energy storage battery is ideal for powering telecommunications, island power, cellular radio, microgrid, remote wi-fi, wind farms, railroad signs/communication, remote residential, grid-tie battery backup and uninterruptible power sources (UPS).


Contact us for wholesale pricing on equivalents for the Aquion Energy Aspen 48M-25.9 battery.