7.7 kWh SAX Power Home Plus Solar Battery Storage with Integrated Inverter and Backup Function incl. Black Start

📦 Shipping time: 5–7 working days
🚫 Pickup: Not possible

SAX Power battery storage!

with integrated inverter and backup function

• Highest efficiency: over 98 % efficiency in discharge mode – top performance on the market.

• Revolutionary technology: individual control of each battery cell string minimises conversion losses.

• Maximum efficiency: the AC-coupled system achieves best-in-class values across the entire operating range.

The ideal solution for PV systems coming out of EEG feed-in support!

• German innovation

• Fast installation

• Backup power function

• Expandable at any time

• Very high efficiency

• Ideal for retrofitting

• Digital conversion

• SAX Power App

• Variable electricity tariff

Scope of delivery:

1x 7.7 kWh SAX Power Home solar battery storage

1x SAX Power black start

Safer / More efficient / Longer-lasting

SAX Power battery storage systems from Erbach near Ulm usher in a new era with a groundbreaking control system that delivers alternating current directly and solves many problems of conventional storage systems.

The SAX Power Home needs no inverter on the battery side. It can be connected either conventionally via a cable connection or as a plug-in solution to a fused socket. This means laying new cables is not strictly necessary: a clean and simple solution.

The SAX Power battery represents a new generation of battery technology. At the heart of SAX Power technology is the intelligent, digital control of the battery cells, which converts DC voltage directly into AC voltage.

This innovation makes battery storage safer, more efficient, more compact and longer-lasting, and significantly improves cost-effectiveness.

No new cable needs to be laid for installation

The SAX home battery can be connected to the home grid via a socket. All that is required is to replace the socket. There are two further connection options, which are also simpler than the conventional installation of battery storage systems. The lithium iron phosphate battery communicates with the electricity meter by cable or wirelessly so that it only supplies the amount of power the household consumes. There is no need for a complex inverter installation between the home battery and the grid. This not only saves space, time and money – the battery is also longer-lasting and safer than the widely used NMC home batteries. No new cable needs to be laid for installation.

Intelligent control and SAX circuitry

At the heart of SAX technology is the intelligent, digital control of the battery cells, which converts DC voltage directly into AC voltage. This eliminates the complex installation of an inverter, which all previous home batteries require between the battery and the household grid. The required household AC voltage is produced by accumulating the cell voltages into a sine wave, which makes an inverter unnecessary. Thanks to the SAX circuitry, the cells can operate independently of one another and optimally balance the state of charge within a battery or after a later expansion.

No solar power fed into the grid at low prices

Charge imbalance is currently one of the most common causes of faults in battery storage systems and shortens the service life of conventional home batteries. The smart meter, which is included in the scope of delivery, is installed between the SAX battery and the electricity meter. It communicates with the SAX home battery via a LORA wireless link or an RS485 cable connection and measures the amount of power consumed by the household in real time. It controls the battery and thus minimises the power drawn from or fed into the grid. In this way, surplus power from the PV system is stored in the SAX battery and drawn on later when the solar system is not producing.

If you use a dynamic electricity tariff, the battery can be controlled accordingly to charge cheaply from the public grid. One SAX battery can be integrated per phase, so up to 21 kWh can be installed across 3 phases. SAX Power from Ulm spent years researching a battery technology that communicates directly with the smart meter and makes the hybrid inverter redundant.

Maximum safety and optimal efficiency

The SAX battery uses cobalt-free lithium iron phosphate cells, which offer four times the safety of the NMC cells common until now. In addition, the special SAX circuitry provides extra safety through individual monitoring and switching of the battery cells. This allows the cells to be completely shut down and disconnected within 0.0002 seconds, virtually eliminating any risk of fire or explosion. After shutdown, the entire system is below the safety voltage – ruling out any risk to the installer and the customer during maintenance work.

Conventional storage systems lose energy even when idle, because the inverter is always running in standby mode, which also generates unwanted heat. With a conversion efficiency of 99 %, the SAX home storage system has very low losses and generates virtually no heat.

For a first installation, a smart meter must be selected.

When expanding an existing system, a smart meter is no longer strictly required.

The manual is included in the scope of delivery.

Download datasheet

Installation instructions

Download quick guide