Anker has launched a pre-order campaign for the SOLIX Solarbank E1600 in the EU. The device lasts up to 6,000 cycles, around 15 years, and could save you up to €2,670 per year. Plus, you can control the solarbank via an accompanying app, adjusting settings and viewing energy storage information.https://www.notebookcheck.net/Anker-SOLIX-Solarbank-E1600-arrives-with-15-year-lifespan.742877.0.html
Savings figure is over the 15 year product lifespan, not annually. Big difference.