[OAC_Sparky]

200mA does not seem to me to be an excessive enough drain to cause your battery to go dead within 24 hours, it likely takes at least an amp draw to kill a strong healthy battery that fast.

If you have keyless entry or factory security, the system monitoring needs the current to pick up the fob signal, and monitor the doors.

I would say that you likely have a bad cell in your battery, a multimeter has a very high resistance when you are testing voltage (so it doesn't impose a load in the circuit being tested) so while the battery is disconnected it will show very little drain, but as you leave it connected to an actual circuit it could drain the battery quite quickly. The fact that the battery voltage would drop even .1 volts in 24 hours when disconnected would point to this.

Now, if the battery is new, why did you replace the battery 2 months ago? The reason I am asking is because if you have an underlying electrical condition that would cause your old battery to fail, such as an overcharge condition, the replacement battery may have taken a couple of months to pooch (ie boiled a cell dry). 14.5 V is on the high side of the charging range, try testing the voltage while revving the engine a bit (ie 2500 RPM) to see if the voltage climbs over 14.5 . If it does you have a voltage regulator problem.