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Description
EG4 WallMount Indoor 280Ah 14.3 kWh Lithium Battery - WM-48/280-LL-00The WallMount Indoor 280Ah batteries are ideal for low voltage residential indoor energy storage applications. The batteries use lithium iron phosphate cells with the highest safety performance and an intelligent Battery Management System (BMS) that can monitor and record the voltage of each cell along with the current, voltage, and temperature of the module in real time. The BMS also contains a passive balance function and an advanced battery control
The WallMount Indoor 280Ah batteries are ideal for low-voltage residential indoor energy storage applications. The batteries use lithium iron phosphate cells with the highest safety performance and an intelligent Battery Management System (BMS) that can monitor and record the voltage of each cell along with the current, voltage, and temperature of the module in real-time. The BMS also contains a passive balance function and an advanced battery control method, both of which improve the performance of the battery pack.
Key Features & Benefits
Built-In 200A BMS: Intelligent Battery Management System monitors cell voltage, current, temperature, and module health in real-time with passive balancing.
Integrated 600A Busbars: Internal busbars with multiple terminals (4 positive & 4 negative) eliminate the need for external busbars when paralleling batteries and/or multiple inverters.
82.6MWh Lifetime Production: High lifetime energy throughput for long-term value.
10 Year Warranty: Backed by EG4's 10-year limited warranty.
>8000 Cycles @ 80% DOD: Exceptional cycle life at 0.5C discharge rate.
On-Board LCD Touch Screen: Easy to see BMS monitoring with selectable closed-loop communications for EG4, Schneider, Sol-Ark, Victron, Growatt, Megarevo, Luxpower, and Deye inverters.
Dual On-Board Fire Arrestors: Offer fail-safe protection against thermal runaway for enhanced safety.
Integrated Self-Heating Feature: Internal heating keeps cells operating during cold temperatures.
Innovative Emergency Stop Function: Optional ESS disconnect can shut down all batteries and inverters (if equipped with rapid shutdown capability) with the press of a button.
Perfect Partner to EG4 Inverters: Optional conduit box mates directly to EG4 inverters allowing a sleek and efficient installation.
Technical Specifications
| Specification | Detail |
|---|---|
| Manufacturer | EG4 Electronics |
| Model | WM-48/280-LL-00 / WM-48-280-1-IN-LL-00 |
| Total Energy Capacity | 14.3 kWh @ 25°C, 100% SOC |
| Nominal Voltage | 51.2V |
| Capacity | 280Ah |
| Charging Voltage (Bulk/Absorb) | 56.0V (±0.8V) BMS / 56.2V (±0.2V) Recommended |
| Float Voltage | 54V (±0.2V) |
| SOC Cutoff | 20% (recommended) |
| Charge Current (Max Continuous) | 140A |
| Charge Current (Recommended) | 60 - 140A |
| Discharge Current (Max Continuous) | 140A |
| Discharge Current (Recommended) | 60 - 140A |
| Cell Type | Lithium Iron Phosphate (LiFePO₄ / LFP) |
| Design Life | >10 years |
| Cycle Life | >8000 cycles @ 0.5C, 80% DOD |
| Lifetime Production | 82.6 MWh |
| Ingress Protection | IP20 (Indoor use only) |
| Operating Altitude | <16,404 ft (<5000m) |
| Charging Temperature Range | 32°F to ≤122°F (0°C to ≤50°C) |
| Discharging Temperature Range | -4°F to ≤131°F (-20°C to ≤55°C) |
| Storage Temperature Range | 32°F to ≤113°F (0°C to ≤45°C) |
| Heater Voltage | 56V |
| Heater Power Consumption | 224W |
| Heater Activation | On ≤32°F (0°C) / Off ≥41°F (5°C) |
| Cell Balance | 120mA passive balance |
| Voltage Accuracy | 0.5% |
| Current Accuracy | 3% |
| SOC Accuracy | 5% |
| Power Consumption (Sleep/Off Mode) | <300μA |
| Power Consumption (Operating Mode) | <25mA |
| Communication Ports | RS485 / CAN |
| Dimensions (H × W × D) | 34.1 × 18.1 × 10.4 in (865 × 460 × 264 mm) |
| Weight | 286.6 lbs (130 kg) |
| Certifications | UL 1973, UL 9540A |
BMS Protection Parameters
| Protection Type | Spec | Delay | Recovery |
|---|---|---|---|
| Cell Over-Voltage | 3.8V | 1 sec | 3.45V |
| Module Over-Voltage | 60.0V | 1 sec | 55.2V |
| Cell Under-Voltage | 2.3V | 1 sec | 3.1V |
| Module Under-Voltage | 44.8V | 1 sec | 48V |
| Over Charging Current 1 | >205A | 10 sec | - |
| Over Charging Current 2 | >225A | 3 sec | - |
| Over Discharging Current 1 | >205A | 10 sec | 60 sec |
| Over Discharging Current 2 | >300A | 3 sec | 60 sec |
| Short Circuit | >600A | <0.1 mS | - |
| Charge Temperature Protection | <23°F or >158°F (<-5°C or >70°C) | 1 sec | >32°F or <140°F (>0°C or <60°C) |
| Discharge Temperature Protection | <-4°F or >167°F (<-20°C or >75°C) | 1 sec | >14°F or <149°F (>-10°C or <65°C) |
| PCB Temperature Protection | >230°F (>110°C) | 1 sec | <176°F (<80°C) |
Product Documents
Spec Sheet: Download PDF
Quick Start Guide: Download PDF
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy