Empower Your Energy: Fox ESS EP12 11.52–46.08kWh High Voltage Solar Battery System
- Flexible, scalable battery storage from 11.52kWh to 46.08kWh—perfect for high-demand homes, small businesses, or commercial projects.
- Advanced LiFePO₄ technology with built-in smart heating and a factory fire suppression system ensures safe charging year-round.
- Efficient plug-and-play installation either wall-mounted or floor-standing, IP65 weather protection.
High Performance for UK Energy Needs
Fox ESS EP12 delivers robust, high-capacity storage for solar energy or backup power, suiting both residential and business applications. Each 11.52kWh module can be installed in parallel—expand up to 46.08kWh per inverter when combined with Fox Junction Box (FE-JUNBOX-HV). The self-heating function keeps performance optimal in cold UK weather, and seamless integration with Fox hybrid and AC-coupled inverters simplifies expansion for users and installers[attached_file:19].
Key Features
- Scalable up to 4 modules (max. 46.08kWh per inverter)
- Smart heating element for cold climate operation
- > 95% round-trip efficiency and 90% Depth of Discharge for maximum usable storage
- IP65 ingress protection—safe for indoors or outdoors, robust in all UK conditions
- Certified to IEC62619, UN38.3, EN IEC 61000-6 standards for safety and longevity
- Built-in factory fire suppression for added peace of mind
Technical Specifications
| Model Name | EP12 | EP12 Plus |
| Battery Type | Lithium Iron Phosphate (LiFePO₄) |
| Nominal Capacity (per module) | 11.52kWh (scalable to 46.08kWh) |
| Nominal Voltage | 384V |
| Operating Voltage | 348–438V |
| Max. Charge/Discharge Current | 30A |
| Recommended Charge Current | 15A |
| Peak Discharge Current (60s) | 65A |
| Peak Charge Current (5s) | 36A |
| Round-Trip Efficiency | ≥95% |
| Usable Energy (Depth of Discharge) | 90% |
| Cycle Life | >4000 cycles |
| Installation Location | Floor or wall (indoor/outdoor) |
| Protection Level | IP65 |
| Dimensions (W × H × D) | 710 × 640 × 185 mm |
| Weight | 98kg |
| Operating Temperature | Charge: –25°C to +55°C; Discharge: –25°C to +55°C |
| Storage Temperature | –10°C to +40°C |
| Humidity | ≤95%, no condensation |
| Altitude | <3000m |
| Warranty | 5 years standard, extendable to 10 years via registration |
| Certifications | IEC62619 / UN38.3 / EN IEC 61000-6 |
Shipping & Delivery
FREE delivery within the UK mainland in 2–3 working days; delivery times to Highlands, islands, Ireland, Africa, Caribbean and worldwide may vary.
If shipping rate not shown at checkout, contact info@energian.co.uk or call +44 2080640335 for a quote.
UK Expert Support & Installation Advice
Expert support available—reach out by phone, email, live chat, or visit our London office. Installation partners recommended for reliable service.