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The LB-S-G1 series - Flexible low-voltage battery for reliable energy storage


In the modular low-voltage battery system category, the Hoymiles LB-S-G1 series offers a safe and scalable solution for residential and commercial applications. With 5.12 kWh per module, a stackable design without cabling and a service life of up to 6000 cycles, it enables efficient use of solar power and flexible expansion up to 20.48 kWh.


Thanks to the IP65 protection class, the battery is suitable for both indoor and outdoor use, while the quick plug-and-play installation enables uncomplicated commissioning. Ideal for anyone looking for a reliable and expandable storage solution!
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The LB-5S-G1 series - Compact low-voltage battery for flexible energy storage


The LB-5S-G1 is a powerful lithium iron phosphate (LFP) battery with a capacity of 5.12 kWh, which is ideal for use in residential buildings. Thanks to its IP65 protection, it is designed for both indoor and outdoor use and offers a high safety and efficiency class.

With its modular, stackable design without cabling, the LB-5S-G1 enables easy installation and expansion up to 20.48 kWh in a single battery unit. The battery is characterized by a long service life of up to 6000 cycles and offers optimized charging and discharging performance for efficient use of the stored solar power.

Why the LB-5S-G1?

  • Flexible capacity options - Expandable from 5.12 kWh to 20.48 kWh
  • Safe LFP technology - High operational reliability and long service life
  • Modular & wireless stackable - No additional cabling required for installation
  • IP65 protection class - Suitable for indoor and outdoor installations
  • Quick installation - Plug-in connections save time and make installation easier
  • Long cycle life - Up to 6000 charge cycles at 90% depth of discharge (DOD)
  • Integrated protection mechanisms - Overvoltage and undervoltage protection, temperature and current protection

Technical highlights

  • Battery type: LiFePO4 (lithium iron phosphate)
  • Capacity: 5.12 kWh (expandable up to 20.48 kWh)
  • Nominal voltage: 51.2 V
  • Voltage range: 44.8 - 57.6 V
  • Maximum charging/discharging power: 2.56 kW
  • Charging current (continuous load): 50 A
  • Communication: CAN, RS485
  • Recommended depth of discharge (DOD): 90 %
  • Cycle life: 6000 cycles @ 25°C, 0.5C, 70 % EOL
  • Protection class: IP65
  • Cooling: Natural convection
  • Installation: Indoor and outdoor
  • Operating temperature:
    • Charging: 0 to +50 °C
    • Discharging: -10 to +50 °C
  • Height limit: ≤2000 m
  • Dimensions: 665 × 503 × 200 mm
  • Weight: 61.5 kg
  • Certifications: IEC 62619, UN 38.3
  • Warranty: 10 years

Other models in the LB-S-G1 series

  • LB-10S-G1 - 10.24 kWh, max. output 5.12 kW, weight 109.5 kg
  • LB-15S-G1 - 15.36 kWh, max. output 7.68 kW, weight 157.5 kg
  • LB-20S-G1 - 20.48 kWh, max. output 7.68 kW, weight 205.5 kg
All models offer a stackable, modular design with easy plug-and-play installation.

Efficient energy storage with the LB-S-G1 series


The LB-5S-G1 is the ideal solution for residential and small commercial applications that require a safe, expandable and long-lasting battery option. With its flexible scalability, IP65 protection and easy installation, it offers an efficient way to store excess solar energy and maximize self-consumption.

Discover more battery storage solutions from Hoymiles such as the HB-S-G2 series and the HIT-L-G3 series.