I still have them (2), only when i open them both up, the battery is loose, and the connections have come apart, i mean they still work to an extent, because i have jammed some paper in when i close it, so it pushes the battery onto the connection points, but it sometimes cuts out.
Like last night, when i went to my car around 7pm, RCL wouldnt work, and so had to open it with the key, then start the engine right away which disabled the alarm and it shut off.
But really need new keys, and stuff paying £100 for them! lol