Fogstar Energy 48V 16.1kWh ECO Solar Battery
Availability: The Black finish of the 16.1kWh ECO will be available from January 2027. Black orders placed now will dispatch in January.
The Fogstar Energy 16.1kWh ECO is a complete, ready-to-install 51.2V LiFePO4 battery for residential and small commercial storage installs. It's specified for long cycle life, straightforward commissioning and broad LV inverter compatibility.
The 2026 model adds an integrated fire suppression unit and built-in cell heating, allowing the battery to accept charge at temperatures as low as -10°C. That makes it well suited to colder indoor locations and winter commissioning.
Inside are sixteen 3.2V 314Ah Grade A cells in a 1P16S layout, controlled by a 200A BMS with a JK 2A Active Balancer to keep cell voltages closely matched over the life of the system.
Key Features
Ready to Install
Arrives fully assembled, with no cell building or busbar work needed on site.
Built-In Fire Suppression
A heat-triggered aerosol unit inside the enclosure activates automatically if internal temperatures rise to a dangerous level.
Low-Temperature Charging
On-board heating allows charging down to -10°C.
Expandable
Up to 16 batteries in parallel, giving a maximum of 257.6 kWh per system.
Warranty & Support
6-year manufacturer’s warranty with 10 years of UK-based Fogstar technical support.
Cycle Life
Rated for up to 8000 cycles at 91% Depth of Discharge.
Inverter Compatibility
Protocols pre-loaded for LuxPower, Sunsynk, Solis, Victron, Voltacon and more.
Communications
CAN and RS485 ports for closed-loop communication with the inverter.
LCD Touchscreen
Built-in display for live monitoring, protocol selection and set-up.
Cell Balancing
200A BMS working alongside a JK 2A Active Balancer to maintain cell health.
Technical Specifications
Model: FE51.2-16
Rated Energy: 16.1kWh
Cell Configuration: 1P16S
Nominal Voltage (V): 51.2V
Operating Voltage Range (V): 43.2V - 57.6V
Cycle Life: 8000 Cycles at 91% DOD (at 25°C, 50A charge and discharge).
Operating Temperature: Charge -10°C to 40°C. Discharge -20°C to 40°C.
Rated Charge/Discharge Current (A): 200A/200A @25±2℃
Maximum Discharge Current: 200A
Capacity: 314Ah
Active Balancer: JK 2A
Weight: 119.5kg ± 3kg
Dimensions: 898.5(H) x 415(L) x 260(W)
Pre-loaded Protocols: LuxPower, Sunsynk, Solis, Victron, Voltacon and more.
Recommended accessory
Connecting multiple batteries in parallel?
The Fogstar Energy 800A Busbar connects up to four 48V batteries and two inverters, with a choice of fuse rating. Battery capacity and discharge capability should always be matched to your inverter output and expected system demand.
View the 800A Busbar →Not sure which inverter you need? Email customerservice@fogstar.co.uk or use our installer map to find your nearest Fogstar Approved Installer.
In the Box
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1.5 m 50 mm² battery cables terminated with M8 ring lugs, for connection directly to the inverter or to an external busbar
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1.5 m communication cable for battery-to-inverter data.
Installer note: connect all negative conductors first, then the positive.
The supplied cables suit the majority of inverters. Some installations may need the battery cables taken to a busbar, with the inverter manufacturer's own leads used for the final connection.
➡️ Download Specification Sheet
➡️ Download User Manual
➡️ Download Warranty Booklet