I love all of my B&O speakers but this one has been disappointing. The battery just doesn't last so you have to keep it permanently plugged into power source. Does't make it so useful as a portable speaker.

I totally agree with all of the previous reviewers comments.
The battery lasts between 1.5 and 2 hrs at about 60% volume then drops to low power mode ie barely audible. when Bang and Olufsen were contacted regarding this issue they used corporate speak to explain that the advertising actually says "UP TO 20 hours battery life" as a way of avoiding giving a refund which I pushed very hard over a series of emails.
Bang and Olufsen then agreed to transport my speaker to their repair centre for testing following which I was told that the battery tested according to company specifications. So there you have it. No refund ... no replacement...no battery life is their policy, and is apparently acceptable to them.

This is a great speaker. The sound quality is fantastic. This speaker is so stylish. A bit pricy but get it on sale and you wouldn't regret it! We've had it for 2+ years now and the battery still runs for several hours - although it's never been actually measure.

The A2 Active is an amazing speaking with suburb sound quality give huge range of depth in its speaker set up. Good bass and its design is simple yet elegant. It's has decent volume levels and works well with all devices. Only down side is it does not have the 24 hour charge cycle as advertised. I get about 6 to 8 hours on medium level sound. Highly recommend