When your installation requires ground-mounted deployment, maximum weather resistance, and proven outdoor reliability, the STACK-14 delivers 14.34 kWh of industrial-grade LiFePO4 storage engineered specifically for exterior installations in all climates.
Empower IT brings you ground-mounted battery storage built for the harshest conditions:
Purpose-built for outdoor pad or concrete slab installations, our ground-mounted systems offer a structurally superior alternative to wall-mounted units by eliminating wall-loading concerns and structural stress. This configuration simplifies O&M through easy ground-level access, removing the risks and costs associated with working at height, while providing a highly scalable layout that allows for seamless capacity expansion on existing pads. By utilizing the ground as a natural thermal mass, the system achieves enhanced temperature stabilization and optimal ambient cooling, ensuring consistent performance and long-term reliability in any outdoor environment.
This is the engine that powers remote gold mines in Alaska, emergency facilities for major cities, 100MW utility plants in the Middle East, and critical infrastructure across six continents. Over 1,000 MW of installed Progen capacity worldwide proves what happens when American engineering meets real-world demands.
Built for unwavering reliability in the most challenging outdoor environments, our systems feature a fully dust-tight and water-jet resistant IP65 enclosure, ensuring total protection against heavy rain, snow, and wind-blown debris. This robust housing is constructed with UV-resistant materials and C4/C5-grade corrosion protection, making it ideal for high-salinity coastal areas and industrial atmospheres where standard enclosures degrade. Engineered for thermal resilience, the system maintains high-performance discharge operation across a wide temperature range of -20°C to +55°C and remains unaffected by extreme humidity levels of up to 95%, providing a stable and durable energy solution for any geographic location.
GSL Energy achieves superior outdoor reliability through a vertically integrated manufacturing model that oversees the entire production chain—from raw LFP cell development to proprietary Battery Management Systems (BMS). By engineering every component in-house, from the high-stability prismatic cells to the weatherproof, industrial-grade enclosures, the company eliminates third-party integration risks and ensures a cohesive, high-performance architecture. This end-to-end quality control is validated by an extensive global footprint, with over 100,000 installations across 138+ countries—from the Arctic to the Amazon—demonstrating field-proven durability in the world’s most demanding environments.
Our systems provide a rugged, versatile energy backbone for agricultural and remote operations, ensuring 24/7 reliability where grid access is unstable or nonexistent. In farming environments, they power mission-critical infrastructure such as irrigation well pumps, automatic livestock feeders, and climate-controlled ventilation for barns and greenhouses, preventing costly losses during outages. For off-grid properties and telecom sites, the integrated solar-plus-storage architecture provides a seamless transition to backup power, supporting rural cabins and remote cellular towers with zero noise and minimal maintenance. By replacing or supplementing diesel generators, these systems offer a cleaner, more cost-effective solution for deep-well pumping and autonomous rural operations.
Designed for high-performance in light commercial outdoor environments, our systems ensure business continuity and operational efficiency for a variety of sectors. They provide critical backup power for gas station convenience stores, keeping fueling systems and refrigeration online during grid failures, while offering robust, scalable power for small industrial workshops and factories. For luxury hotels and remote island resorts, the integrated outdoor storage enables a seamless transition to clean, independent energy, reducing reliance on expensive diesel generators. Additionally, the system serves as a silent, zero-emission portable power solution for outdoor events, ensuring uninterrupted lighting and audio-visual performance without the noise or environmental impact of traditional power sources.
Model Number | STACK-14 |
Original Model | GSL-051280A-B-GBP2F |
Total Energy Capacity | 14.34 kWh |
Usable Energy (90% DOD) | 13.10 kWh |
Nominal Voltage | 51.2 V |
Operating Voltage Range | 46 – 56 V |
Battery Chemistry | LiFePO4 (Lithium Iron Phosphate) |
Rated Capacity | 280 Ah |
Recommended Charge Current | 150 A |
Maximum Charge Current | 200 A |
Peak Current (2 min @ 25°C) | 100 A |
Charge Temperature Range | 0°C to +55°C |
Discharge Temperature Range | -20°C to +55°C |
Storage Temperature Range | 0°C to +35°C |
Cycle Life @ 80% DOD | ≥8,500 cycles (25±2°C, 0.5C/0.5C, 80% EOL) |
Recommended Depth of Discharge | 90% |
Scalability | Max. 16 units in parallel (229 kWh) |
Installation Type | Ground/Outdoor pad-mounted |
Communication Protocols | CAN 2.0, RS485, WiFi |
Connectivity | WiFi + Bluetooth built-in |
LED Indicators | 4 LED SOC display (25%, 50%, 75%, 100%) |
Status Indicators | 2 LED (working, alarming, protecting) |
Dimensions (W×H×D) | 1050 × 700 × 200 mm (41.3 × 27.6 × 7.9 in) |
Weight | 128.5 kg (283 lbs) |
IP Rating | IP65 (outdoor rated) |
Humidity Range | 5% – 95% |
Altitude Rating | ≤ 2000 meters |
Certifications | UL9540, UL1973, CB-IEC62619, CE-EMC, UN38.3, MSDS |
Warranty | 15 years |
Warranty Energy Throughput | 64.80 MWh @ 80% EOL |
