I've just tried a new battery, and hey presto! My remote works again.

Compared the two batteries with a volt meter, found that the old battery was showing a voltage of 2.2v after half a days use! The new battery was showing a healthy 3.2v.

After exhaustive tests (well, three or four goes) I found that the remote would always work with the new battery, but only the first button press would register with the old battery (I assume something is discharging in the remote). So I assume the remote has a very narrow voltage range.

I found that leaving the remote overnight with the old battery mean't I could get about four button presses in the morning before the remote stopped working again.

From reading the posts on the board it seems that SB bought a cheap shipment of dodgy batteries. Hopefully my new Varta should last a bit longer.

Cheers,

Andy M