Fox ESS LV52 5.12kWh 48V Low-Voltage LFP Battery Module
The Fox ESS LV52 (part number FE-LV52) is a 5.12 kWh low-voltage lithium iron phosphate (LiFePO₄) battery module rated at 51 V nominal (48 V class). With 90% depth of discharge, 95% charge/discharge efficiency, and a rated cycle life of 6,000 cycles or more, the LV52 is designed for residential energy storage paired with compatible low-voltage inverters. Up to 4 batteries can be installed in parallel, scaling to 20.48 kWh total capacity. The LV52 is compatible with the Fox ESS LV54 and can be mixed within the same system. CAN/RS485 communication. Two combiner boxes (FE-JUNBOX-LV) are required when installing 2 to 4 batteries. Available from DECO Group, a UK-based solar wholesaler for professional trade installers.
Key Technical Details
- Part number: FE-LV52
- Supplier part number: FE-LV52
- Model: LV52
- Battery chemistry: LiFePO₄
- Nominal energy: 5,120 Wh (5.12 kWh)
- Nominal voltage: 51 V
- Depth of discharge: 90%
- Charge/discharge efficiency: 95%
- Cycle life: ≥6,000 cycles
- Continuous discharge rate: 5,120 W
- Maximum discharge rate (5 minutes): 5,120 W
- Surge discharge rate (15 seconds): 7,500 W
- Maximum charge rate (5 minutes): 5,120 W
- Communication: CAN / RS485
- Maximum batteries per system: 4 (20.48 kWh total)
- Weight: 54 kg
Key Features
- 5.12 kWh capacity per module with LiFePO₄ chemistry and 90% usable depth of discharge
- 95% charge/discharge efficiency for minimal energy loss during cycling
- Rated cycle life of 6,000 cycles or more for long service life
- Scalable up to 4 batteries in parallel (20.48 kWh)
- Low-voltage 48 V class for compatibility with a range of low-voltage inverters
- CAN/RS485 communication for system integration
- Wide temperature tolerance
- Plug-and-play installation
System Compatibility
- The LV52 and the LV54 are compatible with each other and can be mixed within the same system
- The LV52 is not compatible with the older LV5200 battery
- Fox LV series batteries are not compatible with Fox ESS HV (high-voltage) inverters
- Compatible with several third-party inverters including Solis
- Maximum 4 batteries per system
- Two combiner boxes (FE-JUNBOX-LV) are required when installing 2 to 4 batteries in parallel
Installation Notes
- At 54 kg, a two-person lift is required
- Two combiner boxes (FE-JUNBOX-LV) must be installed when connecting 2 to 4 batteries in parallel
- The CAN cable shipped with the LV52/LV54 is made up at the battery end only. The installer will need to make up the cable at the inverter end.
- Must be installed by a qualified electrician or technician in compliance with local wiring regulations
Warranty
- Standard warranty: 5 years
- Extended warranty: 10 years when the installation is registered with Fox ESS online
Common Questions
Click a question below to reveal the answer.
Can I mix the Fox ESS LV52 with the LV54?
Yes. The LV52 and LV54 are compatible with each other and can be mixed within the same system.
Is the Fox ESS LV52 compatible with the older LV5200?
No. The LV52 is not compatible with the LV5200. These are different product lines and cannot be mixed.
How many Fox ESS LV52 batteries can be installed?
A maximum of 4 batteries per system, giving a total capacity of 20.48 kWh. Two combiner boxes (FE-JUNBOX-LV) are required when installing 2 to 4 batteries.
Can the Fox ESS LV52 be used with high-voltage Fox ESS inverters?
No. Fox LV series batteries are not compatible with Fox ESS HV inverters. The LV52 is designed for use with compatible low-voltage inverters, including certain Solis models.
Do I need combiner boxes for the Fox ESS LV52?
Yes. Two combiner boxes (FE-JUNBOX-LV) are required when installing 2 to 4 LV52/LV54 batteries in parallel.
DECO Group supplies Fox ESS LV52 and LV54 low-voltage batteries alongside compatible combiner boxes, cable packs, and low-voltage inverters. Browse our Fox ESS battery storage catalogue for complete low-voltage energy storage system components.
About DECO Group
We are a UK-based solar and energy storage wholesaler supplying low-voltage and high-voltage battery modules, inverters, and balance-of-system components to professional installers and electrical contractors. Our Fox ESS range covers both LV and HV battery platforms with all required accessories in stock. Visit decogroup.co.uk for the full catalogue.
