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Fox ESS EP12 Plus 11.52kWh Battery with Heating Element
#3: 7430 Storage Systems - Li-ion Battery Pack
FOX EP12 Data Sheet
FOX EP12 User Manual
FOX ESS EP12 Installation Guide
FOX Warranty
Future-proof your energy storage with the Fox ESS EP12 Plus – a durable, high-performance LFP battery designed for residential and commercial energy systems.
Scalable Lithium Iron Phosphate Battery for Hybrid & AC Systems
The Fox ESS EP12 Plus is a high-voltage lithium iron phosphate (LFP) battery with a nominal capacity of 11.52kWh. Designed for long-lasting, scalable energy storage, it can be expanded up to 46.08kWh (per inverter port) using the Fox ESS 4-way junction box.
With built-in self-heating technology, the EP12 Plus ensures optimal performance even in extreme cold. This makes it a perfect choice for UK homes and businesses looking for efficient year-round energy storage.
It integrates seamlessly with Fox ESS’s full range of single-phase (1ph) and three-phase (3ph) hybrid and AC inverters, delivering reliable energy for self-consumption, backup power, or EV charging support.
Key Features
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11.52kWh Nominal Capacity
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Expandable to 46.08kWh per inverter port (4 units in parallel)
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>95% Round-Trip Efficiency
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Integrated Self-Heating for low-temperature environments
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IP65-Rated – suitable for indoor & outdoor installation
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10-Year Manufacturer Warranty
Technical Specifications
Battery Type: LFP (LiFePO₄)
Nominal Energy: 11.52kWh
Operating Voltage: 348V – 438V
Max Charge Current: 30 A
Max Discharge Current: 30 A
Depth of Discharge: 90%
Round-Trip Efficiency: >95%
Scalability: Max 4 units in parallel
Weight: 98kg
Dimensions: 710 x 640 x 185mm
IP Rating: IP65
Operating Temp: -25°C to 55°C
Inverter Compatibility - Works Seamlessly With:
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Fox ESS 1-Phase Hybrid Inverters
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Fox ESS 3-Phase Hybrid Inverters
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Fox ESS AC-Coupled Inverters
Ideal For:
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Solar energy storage (on-grid & off-grid)
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Residential battery backup systems
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Commercial & agricultural energy systems
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EV charging energy reserves
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Power backup during outages
What’s in the Box?
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1x Fox ESS EP12 Plus Battery (11.52kWh)
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Installation guide & user manual
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Mounting hardware (if applicable)
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Warranty & registration documents
Why Choose the EP12 Plus?
The Fox ESS EP12 Plus is engineered for long-term energy independence, high performance, and reliable scalability. Whether you're starting a new solar installation or upgrading an existing setup, it’s a smart investment backed by industry-leading technology and support.
