When your home energy system demands maximum safety, exceptional longevity, and seamless integration, the WALL-14 delivers 14.34 kWh of premium LiFePO4 storage in a compact wall-mounted design certified for both indoor and outdoor installation.
Empower IT brings you residential battery storage engineered with commercial-grade quality:
GSL Energy’s vertically integrated manufacturing strategy ensures total quality control by managing the entire lifecycle of the system—from self-developed Lithium Iron Phosphate (LFP) cell technology to proprietary Battery Management Systems (BMS) with independent cell monitoring. By engineering every component from the cells to the final enclosure in-house, GSL eliminates the risks of third-party integration, resulting in a cohesive, high-performance architecture. This end-to-end expertise is validated by a proven global track record, with over 100,000 installations across 138+ countries, delivering reliable energy solutions to residential, commercial, and utility-scale projects worldwide.
GSL Energy achieves industry-leading longevity by combining high-performance cell chemistry with a vertically integrated manufacturing model, resulting in a system capable of 8,500+ cycles at 80% Depth of Discharge (DOD). This exceptional durability translates to over 23 years of reliable daily cycling, significantly reducing the total cost of ownership by delaying the need for battery augmentation or replacement. Each unit is equipped with an intelligent, independent BMS to ensure consistent cell health and safety across the entire installation. Backed by an extended 15-year warranty, this architecture provides the long-term operational certainty and financial predictability required for large-scale energy infrastructure.
Certified for outdoor installation in all climates:
GSL Energy systems offer seamless real-time monitoring and control through integrated WiFi and Bluetooth connectivity, eliminating the need for external communication modules. Users can access comprehensive system diagnostics via a dedicated mobile app for iOS and Android, while the hardware supports industry-standard CAN 2.0 and RS485 protocols for robust, high-speed communication with third-party inverters. On-site monitoring is simplified by a 4-LED SOC display providing clear capacity snapshots (25–100%), complemented by specific fault alerting indicators that immediately signal working, alarming, or protection statuses to ensure continuous operational transparency.
Multiple safety standards for insurance and permitting approval:
Model Number | WALL-14 |
Original Model | GSL-051280A-B-GBP2 |
Total Energy Capacity | 14.34 kWh |
Usable Energy (90% DOD) | 12.91 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 | Wall-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) | 900 × 675 × 200 mm (35.4 × 26.6 × 7.9 in) |
Weight | 128.5 kg (283 lbs) |
IP Rating | IP65 (outdoor rated) |
Humidity Range | 5% – 95% |
Altitude Rating | ≤ 2000 meters |
Certifications | UL9540A, UL1973, CB-IEC62619, CE-EMC, UN38.3, MSDS |
Warranty | 15 years |
Warranty Energy Throughput | 64.80 MWh @ 80% EOL |
