Ensurge

Ensurge Micropower ASA, based in California, pioneers advanced solid-state lithium microbatteries for hearables, wearables, and IoT devices. Their proprietary 11-layer design ensures rapid charging, extended cycle life, and enhanced safety for next-gen electronics.

Company Location

Country:

United States

City:

San Jose, California

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Company Overview

Ensurge Micropower ASA is a California-based company focused on developing and manufacturing advanced solid-state lithium microbatteries for hearables, wearables, and IoT devices. Leveraging proprietary materials and manufacturing processes, the company enables OEMs to create next-generation connected devices, positioning itself as a significant contributor to portable electronics and the e-mobility ecosystem.

Battery Technology

Ensurge’s core technology is solid-state lithium microbatteries featuring an anode-less 11-layer ultrathin structure on a 10-micron stainless steel substrate. They use LiPON solid electrolytes, LCO cathodes, operate at ~3.9 V, and are produced via roll-to-roll printing for scalable fabrication. Designs offer up to 200 Wh/L (projected 750 Wh/L), fast charging (80% in 8 min, full in 1,000 cycle life, enhanced safety, customizable form factors, and SMT assembly compatibility.

Products

Rechargeable solid-state lithium microbatteries ranging from 1 mAh to 100 mAh capacity, featuring anode-less ultrathin design, high energy density, rapid charging, long cycle life, customizable sizes/shapes, and automated SMT assembly compatibility.

Recent Projects

In 2025, Ensurge initiated commercial shipments for customer evaluations, delivering its first batch to a Fortune 500 medical device manufacturer and building a pipeline of over 120 prospective customers.

Investors

Ensurge is publicly traded on the Oslo Stock Exchange (ENSU) and OTCQB (ENMPY). It has around 14,000 shareholders, with the top 30 holding 55%. Shareholders are 70% Norwegian and 42.8% foreign as of 2025. In 2025, a private placement managed by Arctic Securities and SEB raised NOK50M at NOK1.25 per share; earlier that year, placements raised NOK40M and NOK35–50M. Major investors include Svelland Global Trading Master Fund and DNB Asset Management.

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