The Ampace PR-S4 is a residential energy storage system built on cutting-edge semi-solid state battery technology. Purpose-built for modern homes, it features a 40% reduction in volume, superior safety architecture, and long-lasting performance—even under extreme weather conditions. Its compact, modular form factor makes it ideal for both new installations and retrofitted systems.

Ultimate Safety  

The PR-S4 sets a new benchmark in battery safety with multiple layers of fault-resilient engineering:

• Semi-solid state battery technology for enhanced thermal and chemical stability
• Anti-thermal propagation shielding to prevent cascading failures
• AI-powered predictive monitoring for real-time fault detection
• Multi-level redundant protection architecture
• Certified to UL 9540A and ISO 13849 PL d safety standards

High Performance & Durability  

Engineered to withstand the harshest conditions, the PR-S4 ensures long-lasting and reliable energy storage:

• ≥15,000 cycle life (tested with Kunlun cells at 25°C, 0.5C/0.5C)
• Operates reliably from -20°C to 50°C
• IP66-rated enclosure with 72-hour waterproof protection
• Available in a nominal energy range from 6.7 kWh to 40.4 kWh
• Backed by a 15-year extended warranty

Scalable, Smart Design  

The PR-S4 is designed with plug-and-play flexibility in mind, offering:

• Modular “Plug-and-Go” architecture for easy installation
• Smart parallel scalability up to 10 units with a smart controller
• Built-in 10% SOC (State of Charge) balancing per day
• Supports CAN/RS485 communication protocols
• Compatible with both new and existing home energy systems

Whether it’s used for off-grid independence, backup power, or peak-load shaving, the Ampace PR-S4 is a future-ready household energy storage system that combines advanced battery chemistry with intelligent control—delivering unmatched performance, configurability, and peace of mind.