Vehicle:
Civic 2011

Problem/anomaly:
Battery dissipates while car sits for 5 to 7 days (and beyond) and car will not start.

Checks / tests and fixes so far:
1. Replaced alternator
2. Swapped battery (with known good one), Still battery dissipates.
3. Checked battery per Youtube instructions for current draw while sitting (initial draw 50 mAmps, then drops to 25 mApms) while sitting.
4. Checked all fuses one at a time and checked battery with volt meter to see if current draw. There was none.
5. Check all relays (esp A/C ones and they all work).
6. I am open to suggestions about fuses. It could be a Radio fuse/connection. But, I pulled it and check for current leaks. None.

Need recommendations/suggestions:
1. I am leaning towards the positive battery cable. It has multiple connections.
2. Any suggestions on what to look for with a positive battery connection?
3. Anyone have problems with positive battery connection?

Open to other possibilities.
1. Etc. ..

 

Update to original post:

I revise my original Honda Civic post. There most likely is a parasitic battery draw that is casing the battery to dissipate.
I found a better way to do a parasitic draw test on Youtube: perform a parasitic draw test (the easy way).
So, initial results was the Radio and or fuse #23 backup fuse. I did unplug the fuse #35 inside the cab.
There is still a parasitic draw. So, I am still looking. Also, I am looking for a common Civic parasitic battery draw.

 

I had a similar issue. I replaced the battery that was still under warranty and it was dead 3 days later. I eventually found that the parasitic draw was from my starter. The brush pads had worn all the way down. I rebuilt the starter with honda parts for $80. Fg2 is now up and running.