Saturday, November 22, 2008 - 12:13 pm, by: David Vaughan(Davidv)
If prior to that the battery was charged only by driving, then it sounds like a static drain, and as I said earlier, 30 mA just won't do that in a few hours.
David Henderson mentioned the possibility of shorting to the bonnet. Have you looked for that (there will be marking)?
When you test the drain, do everything you normally would to leave the car, like closing and locking and so on, except that the bonnet is up . Keep an eye on it for a minute or two, or come back in ten minutes to see if it is the same.
If it comes up clear from that then the remaining problem is charging, so far as I can see. Presumably you had to charge the battery externally the last time it was flat. That being the case, go for a few runs. Check battery voltage immediately before and after immediately after each run (engine off in each case) with at least an hour between them. The resulting measurement pattern should tell us whether it is a static drain or charging problem.
After all, disconnecting the battery every time you park the car has its disadvantages.
. Keep an eye on it for a minute or two, or come back in ten minutes to see if it is the same. 
