Revolutionary Battery Storage Systems from SAX Power

for retrofitting or new installation of solar systems

The Test Winner – Made in Germany

HOME STORAGE

AC battery storage with inverter function.
Safer | More Efficient | More Durable

SAX Power Home 5.8 kWh
TO PRODUCT >

SAX Power Home Plus 7.7 kWh
TO PRODUCT >

INDUSTRIAL

Complete storage solution for your business.
Modular design with scalable power and voltage.
No inverter or DC-DC converter required.

COMING SOON

SAX Power Battery Storage for Solar Systems: a New Chapter in Storage Technology

The key element of this revolutionary technology is the sophisticated digital control system. This enables direct current to be converted directly into alternating current.

This is achieved by combining the voltages of individual cells into a sine wave. This eliminates the need for a separate inverter.

The innovative SAX Power circuitry enables the cells to operate independently. This optimizes the balancing of the state of charge in both existing systems and storage expansions. This solution eliminates the problem of charge imbalance. A major advantage, as this is one of the most common sources of error leading to shortened operating life of battery storage systems for solar installations.

SAX Power technology integrates storage and conversion capabilities in a single system, elevating SAX technology to a completely new level of battery technology.

Your Advantages When Using a SAX Power Battery Storage System

Your Advantages:

  • Implemented battery-side inverter function

  • Easy installation

  • Compatible with any PV system, as no communication with PV inverter is required – ideal for retrofitting as storage for solar systems

  • Longer service life through optimal cell utilization thanks to rotating charge balancing: all cells are always charged evenly

  • No time limit on expansion thanks to charge balancing: Storage systems can still be expanded even after many years

  • Compact system due to elimination of inverter

  • Minimal heat or noise generation (even under full load)

  • Core data and commissioning directly visible on e-paper display

  • 10-year warranty on battery cells at 80% residual capacity

  • Made in Germany

Your Technical Advantages:

  • Test winner of the HTW Storage Inspection 2025 in the 5 kWh and above class

  • ~98.6% efficiency in conversion -> Results in approximately 95% overall efficiency

  • Low standby consumption (<4W)

  • No fire or explosion hazard due to cell chemistry (LiFePO4)

  • Cell shutdown in case of fault within 0.2 milliseconds

  • Expandable up to 23.1 kWh installed capacity

  • Smart meter communication via RS485

  • Smart meter measurement via hard wiring on the phase or clamp current transformer

  • Emergency power operation, island and black start capable

  • Modbus TCP/IP control