The FelicityESS LUX-E Battery Pack is a low-voltage wall-mounted energy storage system designed for stable operation in hybrid and off-grid installations. What sets it apart is its LiFePO4 (LFP) chemistry, which, compared to NMC, better withstands intensive use, is thermally more resistant, and typically offers a longer lifespan - a key advantage for the safety of home power plants, garages, or company backup systems. Each module features an intelligent BMS and DC-side protections (including a fuse and circuit breakers), ensuring constant control over charging and discharging while minimizing the risk of operation outside safe parameters. An additional feature is the aerosol fire suppression inside the housing, enhancing protection in emergency situations. The LUX-E offers scalability through parallel module connection, making it easy to expand capacity as PV self-consumption increases. Communication via CAN and RS485 facilitates compatibility with inverters and integration with energy management systems. The declared lifespan in thousands of cycles and the multi-year warranty ensure predictable costs and reliable operation for homes, businesses, and off-grid systems.
Ranking
Specifications
Pros and cons
The LUX-E (202408) datasheet declares ≥6000 cycles at 0.2C/25°C/80% DoD - comparable to the Pylontech US5000C (>6000 at 90% DoD). Furthermore, the available depth of discharge is ≥ 95%, meaning that approximately 4.86 kWh can be realistically drawn from a 5.12 kWh module - better than the typical 80-90% DoD of many competitors in the LV segment.
The integrated aerosol fire suppression system within the module is a rare feature in the category of low-voltage residential batteries - FelicityESS published dedicated tests for the LUX-E-48200LG03, demonstrating the activation of the system in a simulated thermal event. Standard Pylontech US5000C and BYD Battery-Box LV modules do not have a similar passive fire suppression system.
Supporting both protocols simultaneously ensures broad compatibility with popular hybrid inverters (Growatt, Solis, GoodWe, Synsunk, Luxpower), eliminating the need to use protocol converters. This is a significant advantage when upgrading existing PV systems without replacing the inverter.
Each module is equipped with a DC disconnect switch and fuses on the battery side - a solution that reduces the design requirements for the installer and lowers the cost of wiring the control cabinet compared to modules that require external DC protection (e.g., some variants of the Pylontech Force H2).
The 10-year warranty, confirmed by European distributors (7sun.eu, Sunvault UK), meets the market standard required by most Polish renewable energy funding programs (Czyste Powietrze, Mój Prąd), which simplifies the eligibility of installations for subsidies.
The FelicityESS brand was launched in 2022 and is not included in the BNEF Tier-1 ESS Storage 2025 rankings or the SolarPower Europe EU Battery Storage Market Review 2025 reports. Pylontech has over 1 million operational installations in over 80 countries, which translates to a more developed ecosystem of technical support, service availability, and familiarity among Polish installers - all of which are important for long-term operation.
The official list of compatible brands includes only Chinese mid-range inverters (Growatt, Solis, GoodWe, Synsunk, Luxpower). The lack of officially confirmed integration with SMA Sunny Island, Fronius Symo GEN24+, or Victron Energy Quattro - which dominate the premium segment in Central Europe - could pose a limitation for higher-end installations or for expanding an existing system with these inverters.
Alternatives
About the LUX-E Battery Pack series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.