battery drain

[Matt]

Probably over tensioned then

So charged it up, drive 4 miles disconnected drove to work (1mile) disconnected, left 8 hours, drove home disconnected left 11 drove to work disconected, just finished early after 4 hours and....

Still starts, feels just as strong. I'm sure normally by now battery would be dead. I don't know if this is working or wether I just haven't been doing it long enough and the battery might still die.

If the battery is staying charged while disconnected. This points to something draining the battery? I have an after market alarm which I don't ever use. Any way to diagnose if this is at fault? I can't think of anything that would draw power once the the key is out