The power sector is undergoing a profound transformation from fossil fuel-dominated to new energy-led systems. The inherent intermittency and volatility of renewable energy, combined with accelerating market liberalization, have positioned advanced energy storage as a core flexible resource deeply integrated into the evolution of modern power grids.
To fully unlock the flexible regulation value of new energy storage systems, their core control systems must maintain high reliability and operate at full performance at all times. In commercial & industrial (C&I) energy storage applications, the 24Vdc backup battery that supports the control system acts like a standby soldier — always ready, providing stable power for critical actions such as grid-tied to off-grid switching.
In the common AC-UPS solution used in C&I energy storage, the supporting batteries (typically lead-acid or lithium-ion) often suffer from electrolyte deactivation and premature capacity degradation due to long-term standby operation, leading to unexpected failure at critical moments. In contrast, the DC-UPS solution from Adelsystem – a subsidiary of the PULS Group – featuring an intelligent battery management system (CBI245A + BTH3.4 VRLA) comes with a unique battery activity refresh technology that precisely solves this industry pain point. Its value has been clearly demonstrated in RISEN’s 500kW export-grade C&I energy storage project.
Application Information
PULS Adelsystem’s DC-UPS solution consists of a 24V/5A DIN-rail power supply with integrated intelligent battery management and a BTH3.4 VRLA battery tray. Installed in RISEN’s 500kW energy storage grid-tied cabinet, it provides reliable backup power for zero-delay grid-tied/off-grid switching.
Core Challenge: Traditional Solutions Fail When Needed Most
In C&I energy storage systems, AC-UPS batteries typically operate in long-term float-charge standby mode: fully charged but only activated occasionally during grid disturbances or mode transitions. Conventional AC-UPS and basic DC-UPS systems lack active battery health management. As a result, battery electrolyte gradually deactivates due to stagnant ion flow — much like soldiers losing readiness without training. This not only leads to sudden failure during critical power outages but also shortens battery life to just 2–3 years, increasing total lifecycle costs and threatening system stability.
Technical Breakthrough: Activity Refresh Technology Keeps Batteries Battle-Ready
PULS Adelsystem has integrated an active battery activity refresh mechanism into its intelligent battery management system. In simple terms, it regularly “trains” the battery: once fully charged, the system automatically sends optimized high-voltage pulses at calibrated intervals to agitate the electrolyte and reactivate settled chemical components, preventing performance degradation during long standby periods. This delivers two core benefits:
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No deactivation — always ready when called upon. Even after months of standby, Adelsystem’s refresh technology maintains ion activity in the electrolyte, ensuring instant, stable power output during grid interruptions and mode transitions. This directly meets RISEN’s strict reliability requirements for its 500kW export project, eliminating the risk of critical control failure.
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Extended battery life — drastically lower replacement costs. Standard lead-acid batteries typically last only 2–3 years in float-charge applications. Adelsystem’s intelligent management extends service life to 3–5 years, an improvement of 30%–50%. For RISEN’s system with 12 units, battery replacements that once occurred every 3 years are now delayed beyond 5 years, reducing lifecycle costs by approximately 40%.
Key Advantage: Zero-Cost Maintenance, Perfect for C&I Energy Storage
Furthermore, PULS Adelsystem’s DC-UPS technology eliminates the maintenance burdens of traditional solutions. The active refresh cycle runs fully automatically with no manual intervention or extra hardware, adding zero operational cost. Optimized for the “long standby, low-frequency activation” nature of C&I energy storage, it outperforms basic AC-UPS systems that only charge without maintaining battery health. In RISEN’s project, the solution delivers industrial-grade robustness, high-efficiency inverter-free power delivery, and wide voltage compatibility — ideal for outdoor deployment and global installations — while ensuring stable control power for seamless grid-tied/off-grid operation.
System Architecture: AC-UPS vs. Inverter-Free Adelsystem DC-UPS
Train Smart, Perform Reliably
For commercial and industrial energy storage, the true meaning of “stand by for years, perform in an instant” is keeping backup batteries fully active during long idle periods. PULS Adelsystem’s battery activity refresh technology achieves exactly that: maintaining battery health through intelligent management, ensuring reliable performance when it matters most, and providing a robust foundation for the large-scale, high-reliability deployment of next-generation energy storage systems.
