Overview
- Retailers such as Kleines Kraftwerk and discounters have been offering Quattro‑XL and Netto bundles that pair four 500 W bifacial modules (2 kWp) with the Anker SOLIX 4 for about €1,759–€1,899, sharply undercutting the standalone retail price.
- Independent lab tests by CHIP measured a usable capacity near 4,924 Wh and good high‑power efficiency but found a clear standby draw of roughly 7.4 W that rises to about 35–50 W when the off‑grid socket is active, which reduces net yields for some use patterns.
- Published analysis from home&smart shows a 2 kW PV array often cannot fully charge a 5 kWh battery in winter or transition seasons, while a 4 kW array roughly doubles annual generation and can shorten payback by about 1.3 years in their modeled scenarios.
- A year‑long home&smart field test of an Anker SOLIX‑based setup produced 1,701 kWh, raised self‑consumption to about 45%, and delivered roughly €510–€595 in savings over 12 months depending on the assumed electricity price.
- Practical takeaways for buyers are clear: the SOLIX 4 supports up to 5,000 W PV input and expansion to ~30 kWh, the bundles often include a Smart Meter for near‑zero export control, and households should match PV size to the 5 kWh battery or plan staged expansion to avoid underusing the storage.