Still early days but very pleased with the battery. My Dyson was only lasting for about 3mins before it died. I bought a corded vacuum which is amazing but missed being able to do a quick run around. Dyson brand batteries were very expensive. This one had good reviews and also had 2 filters. Very easy to install, it had some power already so could tell I had installed properly. Charges really quickly, hasn’t run out when using so a winner!