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About Us
Our Philosophy and Values
At SENS, our commitment to reliability, innovation, and sustainability guides every product we develop. We prioritize durability, efficiency, and technological advancement to create solutions that minimize downtime and extend system lifespan. Our dedication to sustainability means reducing environmental impact wherever possible, supporting energy efficiency, and maintaining responsible production practices.
Lowest Total Cost for Reliable Backup Power
Mission-critical systems depend on high-quality power electronics and energy storage to stay operational during utility blackouts. For many customers, the lowest total cost - not just the upfront price - is a key factor in selecting backup power solutions. SENS provides cost-effective backup power that delivers long-term value and reliability.
The lowest total cost for backup power systems is achieved by prioritizing long-term reliability, reducing the risk of costly failures, and minimizing maintenance needs. Poor-quality equipment often fails, leading to expensive downtime and additional capital investments. SENS's robust, high-quality systems avoid these pitfalls by offering solutions that excel in reliability and performance. With these measures, SENS delivers backup power systems that ensure reliability and minimize total ownership costs.
Reliable Delivery: SENS has maintained an on-time delivery rate exceeding 98%, with any delays typically only a few days.
Peace of Mind: SENS invests in rigorous third-party audits and agency compliance, so customers can rely on verified quality without additional oversight costs.
Cost-Efficient Integration: The SENS PowerCab™ integrates system elements into a single unit, reducing customer costs by simplifying transactions, cutting receiving and installation costs, and minimizing risks associated with handling heavy batteries.
Lower Operating Expenses: The SENS IQ chargers operate with 7.5% better efficiency compared to some competitors, offering substantial savings over time. For a continuous 1.2 KW charger, this efficiency equates to annual savings of 1,139 KWH - saving $2,278 over 20 years at $0.10 per KWH.
Our Story and Milestones: SENS - Founded on Innovation and Reliability
Stored Energy Systems (SENS) was founded in 1971 by Herb Kaewert, a battery industry veteran and M.I.T. graduate with a visionary approach to energy reliability. Originally located in Silicon Valley’s high-tech landscape, SENS was born out of Kaewert's pioneering insight: industrial batteries were highly sensitive to factors like temperature, shelf life, and charging practices, yet the market lacked battery chargers capable of addressing these critical needs. Drawing from his experience at Alkaline Batteries Corporation (ALCAD) - a leading U.S. supplier of NiCd batteries, later sold to the Chloride Group in the U.K. - Kaewert set out to create a company that would redefine battery charger technology.
Key Milestones:
1971: Founded with the mission to redefine reliability in DC power.
1980s: Expanded into industrial power systems, gaining traction across North America.
1990s: Launched a pioneering line of SENS battery chargers tailored for critical power needs.
2000s: Established as a leading supplier of high reliability DC power supplies/chargers.
Present: Revolutionizing integrated engine starting and complete DC systems while leveraging the newest battery technologies.
Early Innovation in Battery Life and Reliability
Herb Kaewert’s mission was clear: improve battery reliability and lifespan through adaptive charging technology. SENS developed chargers that automatically adjusted to meet the precise needs of batteries, dramatically extending their useful life - even tenfold in harsh environments. This innovation significantly reduced costs and risks for clients, attracting customers like Bechtel, Pennsylvania Power & Light, Exxon Mobil, El Paso Energy, and AT&T. To this day, the majority of SENS chargers feature automatic temperature compensation, a foundational technology that has set the standard for reliability.
Expansion and Lean Transformation
In 1991, SENS relocated to Longmont, Colorado, to support expansion needs. Herb’s son Bill Kaewert assumed day-to-day operations, driving growth through lean principles - a process improvement approach developed by Toyota that emphasizes continuous enhancement led by the people closest to the processes. This approach quickly delivered results, enabling SENS to achieve industry-leading product quality, rapid lead times, and cost efficiencies. Today, lean practices permeate all aspects of the business, allowing SENS to maintain competitive pricing while delivering outstanding reliability, with certain products achieving over 1 million hours in mean time between failures (MTBF).
A Legacy of Innovation with the Kaewert Family Leadership
In 2006, Herb’s son Doug Kaewert, a former senior executive at Sun Microsystems, joined the company, bringing fresh leadership to further expand SENS’s growth and innovation. Under the guidance of the Kaewert brothers, SENS continued to push boundaries with products like the EnerGenius® IQ - a microprocessor-controlled DC power supply with integrated battery monitoring - and the MicroGenius® 150, a rugged engine start charger that intelligently adapts charging cycles for optimal performance. In 2021, SENS expanded its capabilities further with the acquisition of Phoenix Broadband Technologies, a leader in battery monitoring solutions.
Leading the DC Power Supply Market
Today, SENS stands as the leading supplier of high-reliability DC power supplies, battery monitoring and chargers for the standby and emergency generator market. Our products are essential to mission-critical industries with clients across various sectors including data centers, utilities, oil & gas, communications, hospitals, plant manufacturing and marine.