None of the electric ones are good
The three electric ice scrapers in the test, which are actually supposed to make ice removal easier, are all “unsatisfactory”. The Kärcher EDI 4 and the 12-volt ice scraper from Lescars look similar to a polishing machine, but each has a rotating disc with small plastic blades on the underside. While the Kärcher has a rechargeable battery, the Lescars must be connected to the 12-volt socket in the car. The EDI 4 can convince itself when it comes to ice scraping, but the product is devalued due to the large number of scratches that the electrical device leaves on a slightly soiled pane.