Fogstar Energy IP65-Rated 48V 16.1kWh Expansion Battery Module
Pick how many modules your stack has now and how many it will have after adding this one. We'll include the right cables for your expansion.
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Next available batch arriving February 2027: Orders placed before this update are unaffected and will ship as originally scheduled.
1 module → 2 modules (16.1kWh → 32.2kWh)
Expansion module and cables only. Your stack needs to have a control unit and base plate already fitted.
Next batch: We're expecting the next delivery in February 2027. Orders already placed will still ship as originally scheduled.
Add another 16.1kWh to your Fogstar Energy Modular Battery Stack with this LiFePO₄ expansion module, supplied with the cables for the expansion you choose.
It's made for stacks that are already up and running with a compatible control unit. On its own, without the stack control hardware, the module can't work as a standalone battery.
Because it connects straight into your existing stack, there's no need to replace any of the original hardware to gain more storage. Your system can simply grow as your energy use does.
Like the rest of the modular range, the module has an IP65-rated enclosure, integrated heating and LiFePO₄ cells, built for long-term use in homes and commercial settings.
Before You Buy
This module only works with Fogstar Energy Modular Battery Stack systems that already have:
- Stack control unit
- LCD touchscreen interface
- Battery base plate
- Main breaker assembly
If this is for a new installation, you'll also need the control unit and stack hardware.
Expansion Battery Module Only
Designed specifically for customers upgrading or expanding an existing Fogstar Energy battery stack system.
No Control Unit Included
This product does not include the stack control unit, LCD interface, base plate or main breaker assembly.
Seamless Stack Integration
Directly integrates with existing Fogstar Energy control units and battery stack configurations.
Scalable Energy Storage
Scales from a single 16.1kWh stack up to a full 1.23MWh system if required.
IP65-Rated Construction
Robust, sealed enclosure protects against dust and moisture, making the system suitable for indoor and outdoor installations.
Integrated Fire Suppression
Built-in, heat-activated aerosol fire suppression system provides fast, automatic internal protection with no ongoing maintenance.
Cold-Weather Ready
Integrated heating system enables safe charging at low temperatures and reliable operation in ambient conditions down to –15 °C.
JK Active Cell Balancing
2A active balancing continuously equalises cell voltages, improving efficiency, stability and overall battery lifespan.
High Output Performance
LV 51.2V (48V) system designed to support high-demand inverters and large backup or off-grid installations.
Long-Term Peace of Mind
Backed by a 6-year warranty and 10 years of UK-based customer service support.
User-Friendly Interface
LCD touchscreen for real-time monitoring and system management.
Built-in Breaker
The 350A breaker allows the entire system to be safely isolated during faults, maintenance, or emergency conditions.
Advanced Cell Management
150A SEPLOS BMS for reliable system protection and stable performance.
Rated Energy: 16.1 kWh
Nominal Voltage (V): 51.2 V
Operating Voltage (V): 43.2 V – 57.6 V
Cycle Life: 8,000 cycles at 91% DOD
Configuration: 16S1P
Working Temperature: 0 – 45 °C Charge (with heating) and –20 – 45 °C Discharge
Maximum Discharge Current: 150 A
Maximum Charge Current: 150 A
Capacity: 314Ah
Communications: CAN / RS485
Ingress Protection: IP65
- 1 × 16.1kWh battery module
- Battery interconnection cables with Amphenol connectors
- Communication cable
Not included:
- Stack control unit and LCD touchscreen
- Battery base plate
- Main breaker assembly
For correct installation, all negative connections must be made before connecting the positive.
Get in touch
We're here to help
Our team are here to make the battery installation process simple. Please get in touch with any questions - we're always happy to help.
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