SAX Power Battery Storage
with integrated inverter and backup function
Test Winner 2026: SAX Power storage sets new standards
The Berlin University of Applied Sciences (HTW) evaluates power storage systems using the “System Performance Index” – one of the industry’s most meaningful performance indicators.
SAX Power – The proven best solution for new installations and retrofits.
The innovative “Made in Germany” technology from Erbach near Ulm has produced a completely new generation of storage: thanks to intelligent cell control, the SAX Power storage system converts direct current directly into alternating current – without any separate inverter.
Bring the test winner into your home and start a new era of energy storage and self-sufficiency.
Find out more now – and benefit from state-of-the-art technology!
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More InformationThe advantages of SAX Power battery storage
Maximum safety
Learn moreMaximum safety
We use cobalt-free lithium iron phosphate cells, which guarantee four times the safety of the previously common NMC cells. Furthermore, the special SAX Power circuitry offers additional safety through individual monitoring and switching of the battery cells. If an error occurs, the cell switches off within 0.0002 seconds. This practically eliminates the risk of fire and explosion. After switching off, the entire system is below the safety voltage – this eliminates any risk for the installer during maintenance work.
Very high efficiency
Learn moreVery high efficiency
Conventional storage systems lose energy even when idling, thereby generating unwanted heat. With a conversion efficiency of 99%, the SAX Power Home has a negligibly small loss, resulting in almost no heat generation.
Durability
Learn moreDurability
With SAX Power technology, the performance of the battery series is no longer determined by the weakest cell in the series, increasing the battery’s service life by up to 50%. To operate the battery as gently as possible and maximize its service life, we use a completely new form of balancing – rotating charge balancing. In this process, the capacity of each cell is fully utilized through individual charging and discharging.
Cost savings
Learn moreCost savings
Since the SAX Power storage system outputs AC voltage directly, the inverter on the battery side is redundant and a major cost factor is eliminated. This means that for a retrofit, only the SAX Power Home is needed in addition to the existing PV system, without the additional inverter for the battery. For a new installation, you only need a standard PV inverter for the PV system instead of a hybrid inverter. This saves money and effort.
Lightweight, compact, and modularly expandable
Learn moreLightweight, compact, and modularly expandable
Compared to conventional products, the SAX Power battery is significantly smaller and lighter. The inverter as an additional unit is completely eliminated. In this way, space and weight savings of up to 30% can be achieved. If additional energy is required, the SAX Power Home can be easily expanded to three modules with a total of 15.6 kWh. This also represents a significant advantage for applications in the field of e-mobility.
Easy installation
Learn moreEasy installation
Installation is very simple:
- Have a smart meter or SAX Home Energy Management System installed by a qualified electrician
- Mount and connect the SAX storage – this can also be done wirelessly
- Done!
