Hi
I have upgrade radio unit with AVIN2 (Android) based. Eversince I am facing battery Drain issue..
if i drive vehicle to my work place 60 miles (2 way) car stays up and runs fine, but batter strength % shows to 50-60%, if that is goes below 40% car does not start

( I bought a car charger
but my spouse drive 20 miles (2 way) and then with in 2 days battery drains.. irrespective whether I use or not using the car....
well, In addition to this I am also hearing small electric click sounds from CARGO area.
What I did so far:
1) Initially the person who was installed left old GPS DVD connected and not taken away. So, I have took off that one also .. but still no luck.
2) To USB i left iphone charger left initially, thought that was causing and took off that one off..
3) verified vehicle going sleep after 16 minutes, yes it is going in sleep mode
4) AAA person advised, since it is battery is low hence alternator struggling alot i may get into issues alot if not now but in future...
but I seems like hitting same problem like you.. can you give me instructions how did you change you suggested int your previous updates!!
-RKT