Came out on Sunday and car wouldn't start. Turns out my battery went dead. I replaced the battery couple months ago for brand new one. Previous batter was old and went dead on me couple times. Was grand since then.
I charged my battery then on Monday and went about looking for parasitic drain. Measured current drainage and it was flicking between 0.01 and 0.02 amps. Anything under 0.04amps should be normal I think.

Anyway car went dead overnight again. I took folding mirror circuit was at fault, took out the fuse and that stop the current flickering and now drainage stays at stable 0.01.

However I noticed the inconsistent reading when measuring voltage at the battery and front terminal to see if my alternator worked.

Sometimes I get
Voltage battery 12.4, front terminal 13.8, Cluster 12.2
or
Voltage battery 13.8, front terminal 13.8 Cluster 13.2

I dont know how accurate front terminal but cluster and battery show that alternator is not working.
Seems like either my alternator on the way out or power doesnt go all they way to battery the odd time ?

New alternator is over 300e. Is there crowd in Dublin that refurbishes them?