I have this battery for a good 3 years and am very satisfied in operation. I took the battery still operating, had from the outset a better battery life than the original. The original battery was completely broken after 2.5 years. The replacement is with me for the full Zufriedenhait for more than 3 years in operation and is still running satisfactorily, currently with about 50% power. A worthwhile purchase, especially when compared with original