In the video below we show an important step in our production process: the’aging test on 6kW single-phase inverter, designed to work in conjunction with the 10kWh Heiwit sodium ion batteries. This is an essential test that each individual inverter must pass before it can be considered ready for installation at our customers' premises.

What does “aging test” mean?

“Aging” in English literally means “ageing”. In electronics, the aging test is a controlled stress cycle in which the inverter is switched on, charged and run for hours (sometimes days), simulating real usage conditions: incoming and outgoing energy flows, temperature variations, response to changing loads and much more.

During this phase, We monitor every operational parametervoltages, frequencies, internal temperatures, response to current surges. Any anomaly is detected and the component is discarded or further analysed. Only devices that demonstrate full stability are labelled as suitable and packed for shipment.

Why is it essential to take this test?

The inverter is the heart of any photovoltaic system: it converts the direct energy generated by the panels or stored in the batteries into alternating current, which can be used for household appliances or to be fed into the electricity grid. A faulty inverter can compromise the entire system, cause outages, waste or even damage.

That is why Heiwit chose to test each unit individually. We do not do spot checks, but connect each inverter to the test bench, simulating a real cycle to ensure the highest level of reliability.

Our technology: intelligent inverters for intelligent batteries

Our inverters are specifically designed to work with the Heiwit sodium ion batteries, an innovative technology that is safer and more sustainable than lithium. The 6kW inverters are single-phase, ideal for residential installations, and integrate real-time monitoring systems, smart grid compatibility and remote management capabilities.

Together with the 10kWh battery, they form a compact, scalable system designed for the future of domestic self-consumption: clean energy, stored during the day and usable at night or during blackouts.

Quality First

The ageing test is just one of the steps in our quality protocol. But it is also the one that, more than any other, symbolises our philosophy: we do not ship anything that has not been thoroughly tested. For us, the energy transition is not only an ecological mission, but also a commitment to technological reliability.

Watch the video below and discover what is behind every Heiwit inverter: hours of testing, attention to detail, and a passion for clean and safe energy.