Alsym Energy’s proprietary battery technology uses manganese oxide and metal oxides with a water-based electrolyte that is non-toxic and non-flammable. It achieves system-level energy densities comparable to lithium-ion batteries but eliminates fire risks. The batteries operate safely at elevated temperatures without extensive cooling, support fast charging within four hours, and offer flexible discharge durations from 2 to 110 hours. They store 1.7 megawatt-hours in a 20-foot container and can be manufactured in lithium-ion facilities with minimal modifications.
Alsym Energy produces non-lithium rechargeable batteries designed for stationary storage, maritime shipping, electric vehicles, utility grids, residential storage, microgrids, and data centers. The batteries are high-performance, non-flammable, and designed for industrial settings such as chemical plants and steel mills where safety is critical.
In 2024, Alsym Energy leased a 60,000-square-foot facility at Exchange 200 in Malden, Massachusetts as their new headquarters, while continuing operations in Woburn. This expansion increases production capacity and enhances prototyping and pilot lines to accelerate battery technology commercialization.
Alsym Energy secured $78M in a Series C round led by Tata Limited and General Catalyst, with participation from Thrive Capital, Thomvest, and Drads Capital. Previously, they raised $32M supported by Helios Climate Ventures while in stealth mode until 2022.
